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** A64 Overclocking Guide **
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THunDA
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Default ** A64 Overclocking Guide ** - 05-31-2005, 19:14 | posts: 2,739 | Location: NY

**Disclaimer**
Overclocking can possibly damage hardware if not done with care, and sometimes even when care has been taken.
Guru3D, WildStyle or me (THunDA) will NOT be responsible for anything that might get damaged while overclocking.



Since there seems to be a large increase of people upgrading to a64 rigs WildStyle and I (THunDA) have decided to write up a little guide to help everyone overclocking their A64 rigs. (THunDA can take full credit for this.. hehe)

First we are gonna go over most of the basic settings that you will find in an A64 motherboard BIOS. Itís possible that different manufacturers might have things named differently, but they should be similar for the most part. If you are unsure of a setting then be sure to ask. After this we will explain how to find the max of each component separately which is the most important and overlooked part of overclocking.


FSB/HTT Bus Frequency
This is what most of us know as Front side bus ( FSB ) but now with a64ís it is called HyperTransport Bus Frequency ( HTT )..
Quote:
Wildstyle says..
HTT effectively equals FSB, but in actual fact there is no FSB on an A64 because the memory controller is on-die. An FSB? What's that? It's a 64 or 128bit wide path transferring data between the CPU and the NorthBridge (memory controller) on non A64 mobos.

The A64's memory controller is built into the CPU itself - it is on-die. The benefit of this on-die memory controller is that the data no longer needs to visit the NorthBridge. This reduces latency and access time, and so on an Athlon 64 the data can be transferred without wait. That is essentially why the A64 is faster.

The A64's architecture depends on clock speed to make use of memory bandwidth. The higher HTT scales with clock speed, but does next to nothing on its own.
LDT/FSB Frequency Ratio
LDT is just like your CPU multiplier but itís the multiplier that makes up your total HTT speed. Here is something Iíll quote from Wild that shows how to get your total HTT frequency..
Quote:
Wildstyle says.. HTT is your ďFSB.Ē LDT is the HTT Multiplier (LDT = Lightning Data Transport)

So for example we could say..

200 (HTT) * 5 (LDT) = 1000 (HyperTransport Bus Frequency)

HTT * LDT = HT Bus.
**Important note**
When overclocking you want to lower this setting to maintain stability. On a socket 754 its best to keep your total HTT speed around 1600htt or less, as Wild explains below this will not effect performance if running under spec a little.. On socket 939 its best to keep it around 2000htt.. Sometimes on 939 you can even get away with overclocking the HTT buss a little but honestly Ive never seen a performance boost by doing this..

Quote:
Wildstyle says.. You are freely able to lower this value without suffering a performance hit because even with a HyperTransport Bus frequency of 200MHz (LDT = 1x), due to the nature of the HT architecture, there is still enough bandwidth available to transfer data between CPU/RAM/HDD without bottlenecking; and at 200MHz the theoretical bandwidth limit is still higher than that of AGP 8X, so video card performance is not affected either.
CPU/FSB Frequency Ratio
This is your CPU multiplier.. This times your HTT\FSB is how you get your CPU frequency..

**Important note**
On all a64 systems it is not recommended to use half multipliers ( i.e. 8.5,9.5,10.5) because this will put your ram on a ratio which means it will be running slower then you think and not the same as you have your HTT\FSB set to no matter what..

A quote here from Wild shows what happens to your ram speed when using half multisÖ

Quote:
Wildstyle says.. (DRAM frequency) X (RAM divider) = CPU frequency

Dividers are all whole numbers, so if you use a half multiplier your memory speed is calculated by using the next highest whole number.

An example...

200X10 = 200/10 (divider) = 200MHz

200x10.5 = 2100/11 (next highest divider) = 190MHz (effective memory frequency.)
CPU VID StartUp Value
This is the voltage that is applied to your cpu before the Vid and special are applied during post.. I havent found this to be a very important setting but normally I just leave it at 1.5v .. I also ran this using the Startup setting and it didnt seem to effect anything in a bad or good way.. So from my personal experience its not really a vital setting..

CPU VID Control
This is your vcore which is your CPUís voltage setting ..

CPU VID Special Control
This may be named different depending on the motherboard but it normally has options that look like this..

104%, 110%, 113%, 123%, 126%, 133%, 136%

What this does is let you add more vcore to your CPU when your regular vcore options are not enough.. What you do is multiply your CPU VID Control with your CPU VID Special Control to get your actual vcore. Here is an example of using the VID Special..

CPU VID Control = 1.50
CPU VID Special = 110%

1.50 x 110% = 1.65v
So with this setting your giving your CPU 1.65 vcore.

And for you lazy people check this out..
This says its for the DFI 250gb mobo but it will work for any mobo that lets you add % to the vcore..



Chipset Voltage Control
This is the voltage applied to your motherboard chipset. The stock voltage for my chipset is 1.5v, but currently Iím running mine at 1.7v just to make sure its getting enough juice since it runs pretty cool for me anyway. I havenít noticed much of an improvement in stability with upping this voltage as I did when I had a nforce2 motherboard but I like to up it a little anyways.

Last edited by WildStyle; 12-06-2005 at 02:47.
   
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THunDA
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Default 05-31-2005, 19:15 | posts: 2,739 | Location: NY

AGP Voltage Control
This is the voltage applied to your AGP slot... Sometimes upping this will help a little with stability in 3d benchmarks or games when youíre overclocking a lot. Some of you with PCI-E boards like my self will not see this as an option in bios.

AGP Frequency\ PCI-E Frequency
This is the bus frequency of your AGP\PCI-E slot. You wanna treat this very much like AGP voltage because it doesnít really help a lot with stability, but sometimes it may help a little to bump it up a FEW MHz.

Dram Voltage Control or Vdimm
This is your RAM voltage. Setting this will vary a lot depending on what type of ram you use and more importantly what ICís are on your ram sticks. Some ram will like a lot and then there is some ram that will be less stable with too much.

For more info on RAM, check this thread out:
http://forums.guru3d.com/showthread....threadid=95128

K8 Cool 'n' Quiet Support
This option, when enabled automatically lowers your vcore and CPU multiplier when the system is idle. Itís highly recommended to disable this setting when overclocking.

FSB Frequency Ratio

This is your Dram ratio option. This is another one that might be listed different depending on what board you have. The options might look something like this thoughÖ

100(Mhz)(1/02), 120(Mhz)(3/05), 133(Mhz)(2/03), 140(Mhz)(7/10), 150(Mhz)(3/04), 166(Mhz)(5/06), 180(Mhz)(9/10), 200(Mhz)(1/01).

When this option is set to 200(1/01) it means your ram is running the same speed as your FSB\HTT. If you lower it then it puts your ram on a ratio which would make it run slower then your FSB\HTT setting. You might want to do this if you have poor overclocking RAM, but still want to overclock your CPU. You can still see great gains in performance from overclocking on a divider since a divider has next to no performance impact on an A64.

Here is the way you calculate out how fast your ram is running using the 9/10 ratio and a 300HTT speed:

300HTT / 10 * 9 = 270mhz memory speed.

So its always...
HTT speed divided by the second number in the ratio and then times the first number in the ratio.

Here is one more example, this time we will use 270HTT with the 5/06 ratio.

270HTT / 6 * 5 = 225mhz memory speed.

Now for the lazy people I have a nice little app here that was made by goddh0r.. You can input your htt, cpu multi and divider then it will tell you what speed your ram is running at..

A64MemFreq 1.1 by goddh0r

Last edited by WildStyle; 12-14-2005 at 12:26.
   
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THunDA
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Default 05-31-2005, 19:16 | posts: 2,739 | Location: NY

Now we are getting closer to the fun part of overclocking.. !!

But first Iím gonna list some programs that you will NEED with links to download for testing stability. Everyone has their favorite program for testing but these are my favorites lately:

Memtest ver. 1.51
http://downloads.guru3d.com/download.php?det=996

Prime95 ver. 24.11
http://www.mersenne.org/gimps/p95v2411.zip

SuperPi
http://superpi.radeonx.com/

OCCT
ftp://ftp2.ocbase.com/ocbase3/OpenBeta/OCCTv0.91.exe

3dMark01, 3dMark03, 3dMark05
01 = http://downloads.guru3d.com/download.php?det=320
03 = http://downloads.guru3d.com/download.php?det=576
05 = http://downloads.guru3d.com/download.php?det=874

**Important note**
You will NEED some type of temperature monitoring program to watch your temps. Most motherboards come with a utility for this or you may be able to download it from the manufacturerís site. Sometimes these temp programs are not the most accurate and I would really recommend to check around from others that use your mobo\CPU combo and find out if they are at least close.


Here is a link to a thread by Soundx98, with a config file for motherboard monitor that he was nice enough to make which works great with DFI NF3 and DFI NF4 mobo's..

http://www.dfi-street.com/forum/showthread.php?t=6798

Finding the max of your CPU\RAM

Finding the max of each component is very important in overclocking. Many people think they can just up the HTT and be done with it, but thatís not true most of the time because then you might get instability and not know what the source is. To me, not finding the max of each component is like fighting a group of people at once when you have the option to fight them one at a time. The first thing I like to do is find the max of my CPU and then my ram.

To find the max of your CPU you want to take out your other components as variables, so this is what I do:

CPU/FSB Frequency Ratio (CPU Multi) to default. Do NOT use the auto setting! Manually set it to whatever your default multi is.

LDT/FSB Frequency Ratio (LDT Multi) to 2.5x or 3x.
Setting this lower right now will make sure that your total HTT speed doesnít cause instability.

LDT/FSB Frequency Ratio (Ram Ratio) to 100(Mhz)(1/02)
This is much lower then you should ever set this but it will make sure your ram is running way under spec and wont be causing you any problems at this point..

CPU VID (Voltage Identification) Control (CPU Vcore)
This is a tricky one.. Its gonna depend on how good your temps are and how far your willing to take it. For 90nm cores (i.e. Sandiego, Venice, x2, Winnies) its best to stick around 1.6v-1.65v MAX, For 130nm cores (i.e. Clawhammer, newcastles) you can go a little higher to 1.7v-1.75v but always make sure temps are good. If you have extreme cooling like water or phase then you can take the voltages higher. You could also try to see how far you will get on stock vcore first or just bump it up from the start. This is totally up to you and what you feel comfortable with. Some A64 CPUís actually overclock better with less voltage thatís why its good to start off lower to find the max of that and if your unhappy or want more then you up it from there.

**Important Note**
Load is when your CPU usage is at 100%. This will happen while playing games and also when running the stability testing programs I listed above, especially OCCT and Prime as they will make your CPU usage 100% for sure. Load temps for CPUís should always stay at or below 50c, a little over 50c wont hurt either but lower is always better.. If your temps are exceeding 50c by a lot then you either need to upgrade the cooling or lower your voltages and\or clocks.

Last edited by WildStyle; 12-06-2005 at 02:23.
   
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THunDA
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Default 05-31-2005, 19:17 | posts: 2,739 | Location: NY

Ok.. now that you lowered the LDT multi, put your ram on a ratio, set your default CPU multi manually and decided what vcore you want to start with its time to start testing..

You want to start raising your HTT\FSB in 10-15mhz increments and in between each move you want to boot into windows and run the SuperPi 32m test. It will take about 30-45 mins normally. If it passes that then keep upping the HTT until SuperPi gives an error then back it down a few MHz (1 or 2) at a time until its stable again...

**Remember to monitor temps**

Once you find the highest spot where SuperPi is happy you want to run the OCCT 30min test (Not the torture option.) This test is a little tougher then SuperPi and if OCCT fails then lower your HTT\FSB 1 or 2mhz until you can pass OCCT..

**Remember to monitor temps**

At this point you can run each 3dmark bench to see if they complete without a crash or error. Donít worry about the scores being low, this is because we slowed everything else down except the CPU.. If they all pass then we are off to Prime time.. hehe. This is the last thing you will run to test the stability of your CPU . Many people are going to have their own amount of time they like to run prime. Personally I run it for 8-10 hours but some like to run it 24 hours before they consider their system stable. I can understand running it for 24 hours when youíre comparing between peoples stable clocks to make sure they are all stable with the same guide lines but I never felt the need to run it that long for my rig to be stable for ME..

If prime fails then back off on the HTT/FSB some until it passes at least 8 hours without errors.

CONGRATULATIONS !!
You just found the max mhz of your cpu..


Next thing we are gonna work on is finding the max of your ram.. Here is how you are gonna setup for that:

CPU/FSB Frequency Ratio (CPU Multi) - This we are going to lower to the 7x multi.

LDT/FSB Frequency Ratio (HTT Multi) - Keep this at 2.5x or 3x just like it was when testing the CPU..

LDT/FSB Frequency Ratio (Ram Ratio) - Put this at 200 (1/01) so it will be running the same speed as your HTT now.

CPU VID Control (CPU Vcore) - You can leave this at the same setting you decided to leave it at during your CPU testing.

Now you have the CPU vcore like it was during the CPU testing, the CPU Multi to 7x, the LDT Multi to 2.5x or 3x, and the RAM ratio set to 200 1/01..

There is only one more thing that you need to do before testing the ram: Learn about timings!! Iím not gonna go deep into this but Iím gonna suggest what timings are popular with some known types of ram chips. Before you go ANY further I highly suggest you read this ram guide by johnrr6 at DFI Street..

http://www.dfi-street.com/forum/showthread.php?t=11397

Its also a good idea to do some research to find out what type of chips your ram use.. It will give you a better idea where to start off with timings and voltages.. Here is a link that might help you find what chips are on your sticks of ram..

http://xtremesystems.org/forums/showthread.php?t=50010

Here are some timings I can recommend without getting deep into the full page of memory timings that my DFI board has.. hehe

TCCD
CPC- Enabled ( 1T )
Cas- 2.5
tRCD- 3 or 4 for more stability
tRP- 3
tRAS- 8

BH5,BH6,VX,UTT
CPC- Enabled ( 1T )
Cas- 2
tRCD- 2
tRP- 2
tRAS- 8

No matter what ram you have timings are never written in stone. They NEED to be tweaked, period ! Always remember that just cuz ďJoe OverclockerĒ says his TCCD runs at 300htt with 8-3-3-2.5 timings doesnít mean yours will even if itís the same ram brand, model, revision, production week.

For more info on RAM, check this thread out:
http://forums.guru3d.com/showthread....threadid=95128

Last edited by WildStyle; 12-06-2005 at 02:30.
   
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THunDA
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Default 05-31-2005, 19:18 | posts: 2,739 | Location: NY

Time to start testing your RAM !!

With the above settings you want to start raising the HTT\FSB 5-10mhz, and in between each raise you are going to run about 25 passes of memtest (Test #5 only for now) Once you get errors there are a few things you can do here:

1- Lower the HTT\FSB until its stable.
2- Raise the Vdimm (RAM Voltage) to see if that makes it stable, but remember some RAM doesnít like a lot of vdimm and it could damage them.
3- Loosen the timings to make it more stable.

Which option you choose is pretty much up to you and how much you know about overclocking RAM. I canít stress it enough to read all you can about overclocking because there is so much info out on the net between guides and forums alone.

Now once you decide what option you are taking, continue testing with memtest #5 until youíre at your max for the ram without errors. Then I would suggest running all the tests in memtest overnight - 8-10 hours.

If it passes the long test then you want to leave those settings like they are and boot into windows. It might not be stable in windows even if it passes memtest though. Iíve noticed with a64ís that I could pass hours of memtest sometimes but have instability in windows. If you arenít stable then you need to either give more vdimm, loosen the timings or back off the HTT\FSB some.

If you do make it into windows I would run 32m SuperPi, 30min OCCT, 3dMarks and then Prime95 overnight, just like we did to finalize the CPUís max. If it fails any of these you have a few optionsÖ

1- Lower the HTT\FSB until its stable.
2- Raise the Vdimm ( Ram Voltage ) to see if that makes it stable.. But remember some ram doesnít like a lot of vdimm and it could damage them.
3- Loosen the timings to make it more stable.
4- Settle with what you have so far.

If you decide to go with one of the options from 1-3 then keep repeating the tests until you are happy and stable.

CONGRATULATIONS !!
You just found the max MHz of your ram..



Now that you found the max of your CPU and ram it should be a little easier to clock it together..

Lets say your CPU maxed out at 2800mhz with its default multi of 12x.. But your ram maxes out at 250mhz..

12x 250 = 3000mhz.. That wonít work ..lol..

11x 250 = 2750mhz .. That will work but your cheating yourself 50mhz of CPU power.

12x 233 = 2796MHz .. That will work and get you closer to the max of your CPU. And running the ram little slower then the max you found before to achieve the higher CPU MHz might also allow you to tighten up the ram timings a little.

Now there is always the option to use a divider for your ram which will get you closer to your CPU and RAMís max....

10(CPU multi) x 278(HTT) = 2780mhz (CPU speed)

If you use a 9\10 divider with this configÖ

278 \ 10 x 9 = 250mhz (mem speed)

Whatever you decide there really isnít a right or wrong way to do it. The only way to find out which way is best for you to run is test test test!! Run benchies with different configs and see which performs the best.

This is just a small portion of overclocking.. There is much more to learn but I hope this helps some of you get a better grip on where to start with your A64 system. It took me a lot of time to figure it out myself, it just takes patience.


Here im gona list some links to things I suggest you read..

Confused by HTT? LDT? FSB? A64??? READ THIS!

Last edited by WildStyle; 12-06-2005 at 02:31.
   
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MikeMK
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Default 06-01-2005, 16:45 | posts: 11,043 | Location: Woking

Awesome guide chaps... sure it will help alot of people around here. BTW that vid special spreadsheet with all the values on it is really useful. Been meaning to do one of those myself to save me diving for the calculator all the time. Gonna print that out
   
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THunDA
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Default 06-01-2005, 17:04 | posts: 2,739 | Location: NY

Quote:
Originally posted by MikeMK
Awesome guide chaps... sure it will help alot of people around here. BTW that vid special spreadsheet with all the values on it is really useful. Been meaning to do one of those myself to save me diving for the calculator all the time. Gonna print that out
Thanks Mike..

Yea that chart makes it easy.. got it at dfi-street but its been floating around in a few forums..

I sure hope this helps some people ..I mean there is alot more to oc'n but I think this is a decent start..

   
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carfunatics
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Default 06-01-2005, 17:49 | posts: 42 | Location: Chicago, Illinois

I just want to compliment you guys on a fanatastic guide!

It certainly is the easiest one to understand that I have seen. All the links are a really huge help. Kudos! You guys rule.

Noticed that you make a lot of mentions about temperature monitoring. Great guide to MBM5 on DFI Motherboards here http://www.dfi-street.com/forum/showthread.php?t=6798
   
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THunDA
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Default 06-01-2005, 17:51 | posts: 2,739 | Location: NY

Quote:
Originally posted by carfunatics
Noticed that you make a lot of mentions about temperature monitoring. Great guide to MBM5 on DFI Motherboards here http://www.dfi-street.com/forum/showthread.php?t=6798
Thanks for reminding me..

I use Soundx98's config file myself but forgot to add it .. Gona add it to the guide..
   
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rickyboy
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Default 06-02-2005, 13:57 | posts: 500 | Location: canada

great guide it worked great got stable overclock but how will this affect lifespan of the components overclocked dont get me wrong i like the extra performance for free but i still need my pc for a couple of years thanks
   
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THunDA
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Default 06-02-2005, 15:38 | posts: 2,739 | Location: NY

Quote:
Originally posted by rickyboy
great guide it worked great got stable overclock but how will this affect lifespan of the components overclocked dont get me wrong i like the extra performance for free but i still need my pc for a couple of years thanks
Well computer components are made to last 10 or more years, so overclocking it might shorten it a little .. But as long as you dont go crazy on voltage and keep your temps in a acceptable range then you will be fine..

But of course when it comes to overclocking nothing is for sure..

Happy the guide helped you..
   
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GrAC3R
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Default 06-05-2005, 09:58 | posts: 22 | Location: Fall In Light

Ok heres my main Specs:


AMD FX-55
OCZ Performance 512x2 2-3-3-6
Gigabyte K8NS Ultra (F5 Bios)
500w Antec PSU


Now I tried the first couple of steps to find my max CPU overclock, but cant even get past 207 FSB without IRQ Blue screens/prime errors (HTT x2 / PCI/AGP Lock on /Ram @ 100 CAS 2.5). So yeah i'm kinda clueless at all this, but what would be causing it to crash with only a small bump ? Do I need to increase the vcore? Any help appreciated.

Last edited by GrAC3R; 06-05-2005 at 10:34.
   
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THunDA
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Default 06-05-2005, 22:41 | posts: 2,739 | Location: NY

Quote:
Originally posted by GrAC3R
Ok heres my main Specs:


AMD FX-55
OCZ Performance 512x2 2-3-3-6
Gigabyte K8NS Ultra (F5 Bios)
500w Antec PSU


Now I tried the first couple of steps to find my max CPU overclock, but cant even get past 207 FSB without IRQ Blue screens/prime errors (HTT x2 / PCI/AGP Lock on /Ram @ 100 CAS 2.5). So yeah i'm kinda clueless at all this, but what would be causing it to crash with only a small bump ? Do I need to increase the vcore? Any help appreciated.
Are you leaving it on the stock multi of 13x ?

What type of cooling are you using and how are your temps ?

You can try a different divider like the 133 or 166 .. Sometimes certain dividers might not work correctly, I know some dont work on certain bios versions for me on my mobo..
   
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Default 06-09-2005, 05:48 | posts: 144 | Location: MN

So I'm testing my ram right now, and i have the following settings:

LDT Multi: 3x (default 4x)
FSB/HTT Freq: 200 (default for 3000+ 939 sckt)
FSB Multi: 7x (default is 9x)
RAM Hz: Auto ( I dont know if i should set it to 166 or 200 so i left it auto )
Timings: 2.5-3-3-7

It ran MEMTEST plenty of passes, and i want to know before i start upping the FSB if i should lower / up my timings and if it will be stable. I have Kingston Dual Channel ValueRAM and i haven't heard much about its overclockability. I'm pretty new to overclocking so bear with me if some of these questions are elementary.
   
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THunDA
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Default 06-09-2005, 06:01 | posts: 2,739 | Location: NY

Quote:
Originally posted by togglemuch
LDT Multi: 3x (default 4x)
FSB/HTT Freq: 200 (default for 3000+ 939 sckt)
FSB Multi: 7x (default is 9x)
RAM Hz: Auto ( I dont know if i should set it to 166 or 200 so i left it auto )
Timings: 2.5-3-3-7

It ran MEMTEST plenty of passes, and i want to know before i start upping the FSB if i should lower / up my timings and if it will be stable. I have Kingston Dual Channel ValueRAM and i haven't heard much about its overclockability. I'm pretty new to overclocking so bear with me if some of these questions are elementary.

The setting you mention "Ram hz" should be set to 200 that seems to be your ram ratio.. setting that to 200 when testing ram is what you want..

Value ram doesnt 'usually' oc that good but you can go up in small increments and keep testing.. if you dont get far you can also try to loosen the timings to 7-4-4-2.5 .. its not usually good to loosen them too much but if it makes you gain alot then it might be worth it..
   
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togglemuch
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Default 06-09-2005, 19:50 | posts: 144 | Location: MN

well they come at 3-3-3-8 but i lowered them to 2.5-3-3-7 as i saw someone else was using those timings and i said why not. I'll try loosening timings and such soon thanks for the quick response
   
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THunDA
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Default 06-09-2005, 20:07 | posts: 2,739 | Location: NY

Quote:
Originally posted by togglemuch
well they come at 3-3-3-8 but i lowered them to 2.5-3-3-7 as i saw someone else was using those timings and i said why not. I'll try loosening timings and such soon thanks for the quick response
Quote:
Originally posted by THunDA
No matter what ram you have timings are never written in stone. They NEED to be tweaked, period ! Always remember that just cuz ďJoe OverclockerĒ says his TCCD runs at 300htt with 8-3-3-2.5 timings doesnít mean yours will even if itís the same ram brand, model, revision, production week.


No problem.. good luck
   
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togglemuch
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Default 06-10-2005, 01:14 | posts: 144 | Location: MN

OK so this is what i've done.

I tested my CPU to 2200mhz at 5.525 x 8.3% (fsb @ something like 245 x 9 and ram at 100) that was fine.

I tested my RAM at 225hz at 2.75 v (Ran stable on MEMtest for 17 passes, i assume thats stable?) that was fine.

So i try running my computer at:

LDT multi : 4x
HTT (FSB): 225
RAM freq: 200hz
CPU MULT: 9x
voltages same as above, temperatures are low.

It boots properly, im in windows, matter of fact im typing this on that setup right above me. Only thing is, i reach to run a Super_Pi test, and i get an error on the first run.

What could be causing this instability? How should i fix it?

My ram timings are 3-3-3-8 (My ValueRAM won't allow me to loosen timings beyond stock before i get dots on the screen on boot, which i assume isnt stable )
   
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THunDA
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Default 06-10-2005, 03:06 | posts: 2,739 | Location: NY

Quote:
Originally posted by togglemuch
I tested my CPU to 2200mhz at 5.525 x 8.3%
You mean 1.525 + 8.3% ??

Quote:
Originally posted by togglemuch
I tested my RAM at 225hz at 2.75 v (Ran stable on MEMtest for 17 passes, i assume thats stable?) that was fine.
All you did to test your ram is run 17 passes ? of what test 5 ? the full tests ?

Try to read through the guide again.. there is more you should do to test your ram then 17 passes of memtest..
   
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togglemuch
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Default 06-10-2005, 03:16 | posts: 144 | Location: MN

I see. Well, i dont consider overclocking worth it if my RAM can only push it like 100mhz more, probably wont unlock a lot more performance out of my x800xt like i would expect.. and yes i meant 1.525

would lowering my ram to 166 then upping the FSB be better? or am i better off at keeping whatever i can get at 200..cause if so im done with this until i can get better ram :/
   
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h0lm
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Default 08-03-2005, 15:45 | posts: 3 | Location: Denmark

Okay, I've read the your guide(And understood the most of it I geuss ). Im a oc-newb, lets get that straited out, and Im not going to spend that much time oc-ing
Besides, I've read another article just like it in danish, and it is too much work, ill rather game.

Q:

Right now I have an AMD64 3000+ Newcastle on an Abit Kv8, with 2 x 512mb Kingston ram.

The cpu is standard to run about 200mhz * 10. I used the bios and tried to put it up a notch.. now it runs 220 * 10, and it is still stable.

My simple question is, when the cpu is cool enough(40c idle), is it then okay to oc it more than that ?
Im thinking of ocing it to a 2.3 or maybe 2.4.. AND, im not going to oc the ram, or agp ?
I dont know if the question seems odd, caus im a newb as I said , but:
Is it alright to oc it even more, if the temp is low enough ?
   
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THunDA
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Default 08-03-2005, 17:06 | posts: 2,739 | Location: NY

Quote:
Originally posted by h0lm
Im not going to spend that much time oc-ing
Besides, I've read another article just like it in danish, and it is too much work, ill rather game.
Well no one said it was easy.. If you rather game then leave it where it is and dont do anything..

Quote:
Originally posted by h0lm
My simple question is, when the cpu is cool enough(40c idle), is it then okay to oc it more than that ?
Im thinking of ocing it to a 2.3 or maybe 2.4.. AND, im not going to oc the ram, or agp ?
I dont know if the question seems odd, caus im a newb as I said , but:
Is it alright to oc it even more, if the temp is low enough ?
You really dont want to pay much attention to idle temps.. Load temps is what you want to keep your eyes on.. Keep the load temps at or around 50c..

Since your already at 40c when at idle im assuming your load is 50c or higher.. I would suggest upgrading your cooling before you push it more..

But then again if you dont want to take the time to do anything then leave it and be happy ..
   
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h0lm
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Default 08-03-2005, 20:19 | posts: 3 | Location: Denmark

nono, I didnt meen to be an idiot Sry

Its just that i find it difficult, and the only thing i need to have running faster is my cpu. The 1 gig ram is fine for me.

My cpu is actually about 50c idle!.. didnt think that was much.. but at load(Gaming hl2 for example), its at 63c..
I have a zalman 7000cu B.. and i think my m8 who put it on might have used way to much cooling paste... so ive ordered a tube of arctic silver5.. i should have it in my hands tomorrow.

My question was if i could oc only the cpu a bit more, using bios, with out having to oc my ram ?
Didnt meen to offend u, sry.
   
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THunDA
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Default 08-03-2005, 20:53 | posts: 2,739 | Location: NY

Quote:
Originally posted by h0lm
nono, I didnt meen to be an idiot Sry

Its just that i find it difficult, and the only thing i need to have running faster is my cpu. The 1 gig ram is fine for me.

My cpu is actually about 50c idle!.. didnt think that was much.. but at load(Gaming hl2 for example), its at 63c..
I have a zalman 7000cu B.. and i think my m8 who put it on might have used way to much cooling paste... so ive ordered a tube of arctic silver5.. i should have it in my hands tomorrow.

My question was if i could oc only the cpu a bit more, using bios, with out having to oc my ram ?
Didnt meen to offend u, sry.
Its ok you didnt offend me.. im sorry for misunderstanding too..

Well if you really want to just oc the cpu and not the ram you could leave the ram on a ratio..

You really need to work on the temps though.. 50c at idle is way too high, not to mention the 63c load temp.. If you cant get them down some I personally wouldnt oc at all..
   
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THunDA
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Default 08-19-2005, 16:19 | posts: 2,739 | Location: NY

UPDATE.. I just added a little something about the VID StartUp Value option in bios... I think this is only a DFI bios option but Ive had a few pm's about this setting so I figured to add something about it..

Quote:
CPU VID StartUp Value
This is the voltage that is applied to your cpu before the Vid and special are applied during post.. I havent found this to be a very important setting but normally I just leave it at 1.5v .. I also ran this using the Startup setting and it didnt seem to effect anything in a bad or good way.. So from my personal experience its not really a vital setting..
I changed this part because before it just mentioned winnies and clawhammers..

Quote:
CPU VID (Voltage Identification) Control (CPU Vcore)
This is a tricky one.. Its gonna depend on how good your temps are and how far your willing to take it. For 90nm cores (i.e. Sandiego, Venice, x2, Winnies) its best to stick around 1.6v-1.65v MAX, For 130nm cores (i.e. Clawhammer, newcastles) you can go a little higher to 1.7v-1.75v but always make sure temps are good. If you have extreme cooling like water or phase then you can take the voltages higher. You could also try to see how far you will get on stock vcore first or just bump it up from the start. This is totally up to you and what you feel comfortable with. Some A64 CPUís actually overclock better with less voltage thatís why its good to start off lower to find the max of that and if your unhappy or want more then you up it from there.
   
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