am2+ limited to 1 stick of 1066 ram per channel ?

You can add the M4A79 Deluxe to the 'can' list....I think.

I set the timings manually in BIOS, as well as upping the DRAM voltage to 2.0 per Mushkin's recommendation. CMD rate is set to 2T, Bank interleaving is enabled, DRAM Timing Mode is set to 'both', and command rate is on auto...


Does everything look right?



I wasn't sure about all the other timing settings (tRC, tWR, tRRD, tWTR, tRFC0, tRFC1), so I left them in auto...still trying to learn all this. :nerd:

Psychlone: As usual, big thanks for all the info!

 

Table updated

Code:

ASUS
M3A32-MVP Deluxe
M3A79-T Deluxe
M3N-HT Deluxe
M3A78-T
M4A79 Deluxe

MSI
MSI K9A2
MSI DKA790GX
MSI KA790GX


DFI
LP DK 790FXB-M2RS

ASRock
K10N780SLIX3

Foxconn
Destroyer 780A

Gigabyte
GA-MA770-DS3 r1

Intel:
Crosshair II Formula


**DOESN'T WORK**
M3A78-T (further testing and verification pending)

@ roguetrip: Sorry about your luck there. We should really try to get someone else with the M3A78-T to confirm, just in case there's not something out of the ordinary going on here...almost every other board can pull it off, and ASUS being one of the best motherboard manufacturers, it would really surprise me that it's actually not capable.

@ Mountainlynx: I concur with Antichrysler's statement on your CPU. DDR2-1066 speeds are only an option when using Phenom architecture CPUs. This certainly doesn't mean that you can't overclock your DDR2-1066 sticks from DDR2-800 to 1066MHz (or higher), it just means that the memory controller on the older architecture doesn't allow for the DDR2-1066 specification from within BIOS.

@ Uncle Dude: You can safely set your CMD Rate to 2T...it's probably not going to run at 1T anyway, and that's one less variable that you'll have to worry about. The rest of your known timings are all in order and fine, and the ones you don't understand yet really aren't hindering your ability to overclock on your system anyway.
WildStyle used to have an excellent guide here somewhere on every single latency and what it does...I'll see if I can find it - I had one saved and printed out from somewhere else that I'll also look for, but for the most part, unless you're trying to overclock your RAM to the edge of it's stability point, those other latencies aren't worth the trouble of even learning, let alone the process of tweaking as per my Phenom Overclocking Guide - Most Phenoms show more potential overclocking via the CPU Multiplier method rather than the FSB method anyway. (although, for anyone that has a crap overclocking stepping CPU or a non-BE Phenom, the FSB method is really superior to any other form)

Thanks for the input guys - this thread has gotten 4,000 views for a reason, and hopefully, it's not just us that have posted here that have learned something!

Psychlone

 

also works on the msi ka790gx (different than the dka790gx) as it runs 4 x 1gb , had to change the memory to 2 x 2 gb cause of the new cpu cooler resting on the memory

 

@ Psychlone

Thanks for the reply, sorry its taken me so long to reply back... Motherboard decided to break (by break I mean caught fire, and dont worry they didnt argue when I was fuming and went back the shop) so still waiting for Gigabyte to RMA it back, gonna try what you said but ive already made sure its Unganged and its running at 2T command and i set the slots to 127.5 on all slots :S. As soon as I get my board back I will try and post back.

By the way, I have a Phenom X3 and its stock at 2.3Ghz and I like to overclock, will that be a problem with all 4 sticks in??

Thanks

 

yes rma time from gigabyte-uk took over 3 weeks for me on my old board also , hence my change of brands

 

Ouch! You guys are hurting me!! Going from one brand that catches fire to another known fire hazard is really only a lateral move guys! But, 3 weeks in RMA would *kill* me, so I do understand.

Hey Jamz - When you get up and running, head over into my Phenom overclocking guide so as to not derail this thread, but to answer your question in short, having more than 2 sticks will always hinder an overclock, but you can still overclock pretty well, just not to the max.

Psychlone

 

c1:

With the exception of the Anthlon 64 X2 7850BE AM2+ CPU.
Correct or incorrect?

 

In the words of Patrick Henry. Allow me to break forth from these chains that bind me

Wow you guys really know your stuff.
Well here goes sure hopeing for the "Can" list and not the Cannot List.
However I have a step or 2 to go before I can get to that point.. I'll make it as short as possible. And im a newbie so i'll say sorry in advance.
exactly 29 days ago I bought a CPU,Motherboard and MEM. from a retailer. I skimped on the CPU knowing I could upgrade it real soon and use it for another system.
At the salesmans advice I bought an

ASUS M3N72-D AM2+ SLI Motherboard.
OCZ Ram package 2X2gig
along with an
AMD Anthlon 64 X2 7850BE CPU. ($69)
Well turns out the ram he gave me is not PC8500-DD2 1066Mhz its PC6400-DDR2 800Mhz.

In my defence I never seen the RAM before it was taken out of the package. The salesman ran and grabed it for me and took it up to the Tech Department to be installed and tested with the CPU and MB. For a fee of $1.

So all was well untill yesterday and I find out its not 1066 it 800mhz. So I call and they tell me I can bring it back.
Upon researching this MB and Ram and CPU I see the Disclaimer about 1066 only working in 2 slots. Grrrrrr. I was miffed.. But then I came to GURU-3D and your forum is much more positive about getting this MB and CPU to 1066 provided I exchange the Ram for What I was told I was getting in the first place 1066mhz capable ram.

So for now my main question is Will I be able to (in all likelyhood) get it to work once I put in 1066 Ram?
And DO I need to Get The best OCZ Ram. You guys all seem to have PLatinum and Dominator and such.

Do you think OCZ
Gold Edition 4GB DDR2-1066 (PC-8500) DIMM Memory Kit (Two 2GB Memory Modules) will be acceptable?
Also should I get 2 packs 4 all together or do you think I should work with just 2 then go back for 2 more if I get the first 2 1066 working?

I have only a short time to return the incorrect Ram and its the other side of the city so if your pretty confident it will eventually work out I'd like to get all 4 , 2Gig sticks today.
that would be 8GB total in 4 slots all matching.
If the stated ram might not be quality enough I need to know ASAP so any and all replys would be greatly appreciated. I will check the list again but I did not see the Asus M3N72-D Motherboard mentioned anywhere in this thread. (Note: the Asus motherboard will actually accept some AM3 Chips SO that should also be considered.
Is it not a good MB? I picked that one because it had Solid Caps and I know that can be important and I had not really intended to OC the board or CPU (untill you guys peeked my intrest lol).
Thanks in advance for any advice/guidence on this.
Ya'll seem to be a great bunch of guys who know your stuff.

I'll end at the start.
In the words of Patrick Henry. "Allow me to break fouth from these chains that Bind me. Give me Liberty (to use whats marked on the CPU and MB Box. AM2+ compatibility) or give me death! and a spot on the "Cannot" list. Please God dont tell me I will be the only one on the "cannot" list.

Thanks
Robo

Edit: CPU-Z does say Socket AM2+ 940 For the CPU.
CPU-Z MB Chipset - nforce 740a SLI
Southbridge nForce 740a SLI MCP
Bios Asus M3n72-D ACPI Bios Revision 0603

I have checked Asus Site and It is AM2+ motherboard even mentions it will take some AM3 CPU's so that might be my upgrade path but not if this temp setup wont do 4 - 1066 2 gig sticks without compromise (8GB total in 4 slots)

 

Same goes for the 7850 as with the 7750?
Shed some light on this for me?
the 7850BE is realy a Phenom with 2 cores Disabled? Right?
I posted a thread I really need some ASAP help with if you would not mind reading it, and getting back to me.

 

Sorry I missed this, Robo.

Your Kuma cored 7850BE, even though it does indeed support 1066MHz, has a bit of a different memory controller layout than the Deneb cored Phenom II and Agena cored Phenom I most of us were talking about in this thread.

That being said, I don't really see a reason why you shouldn't be able to force the settings manually and still achieve what the rest of us have done.

So I'm not clear on this...you say that you have 2 X 2GB sticks of OCZ RAM, so I'm not sure what you're trying to convey here - because 2 X 2GB sticks are indeed two sticks of two gigabytes each, and would only occupy 2 slots in the motherboard.

Now, after re-reading the rest of your post again, I understand that you're wanting to have 8GB total in your rig, and are concerned that you're not going to be able to run them at 1066MHz. - Is this right?
Nowthen, I have to has what you're going to be using your computer for?? If you're heavy into Photoshop, transcoding huge movie files or other intensive work like that, then having 8GB of memory can help out a lot, but then you're limited with that CPU (but you said that you may upgrade that in the future) - alternatively, if you mostly just game and surf the internet, and only occasionally do some heavy utilities, then 8GB is overkill for any system, and to add to that, any operating system that's not 64bit (like Vista x64 or Windows7 x64) won't even recognize more than 3.3GB of RAM at all...

So, you've got a choice to make - 8GB is doable, but the chances of forcing 1066MHz gets slimmer with more than 2 sticks, *AND* you must use a 64bit operating system - *or*, you get 2 X 2GB sticks (for a total of 4GB) and have a good chance of getting them to run at 1066MHz, and can still use your XP OS (but it's still not going to see all 4GB no matter how hard you try, it will only see a total of 3.3GB or less)

Personally, I'd stick with 2 X 2GB sticks (for a total of 4GB) - that's how I run my system...I mostly game and surf the net helping others...and do a little light transcoding/ripping on the side, but not much.

Good luck!

Psychlone

 

AMD AM2+ Mobo and PC8500 Ram- Yes I think thats some stellar advice there.

Dude you Rock
Thanks for responding.
After a fiasco with the retailer (they could not find the Dominator PC8500- 1066 there computer showed in stock. 30min searching the store and warehouse.) last night I ended up returing home with the OCZ Titanium PC6400 sticks.
with the intention of overclocking them to achive optimal performance. I'm told that there lower latency will overclock better. Anyone know if this is 100% true?
Am getting the impression that OCZ is a helpfull resourse and easy to deal with. True?

Q: How big a deal is it to run 2 4gig PC8500 sticks unganged vs 2x 4gig sticks single channel mode? and in what ways is there a difference? Gameing and performance wise.

Another question.
Does overclocking the OCZ void any warrantys?
Same question for the AMD-CPU and Asus Mobo.

Thanks all!
robo

 

Biostar TA790GX 128M

go ahead and add the Biostar TA790GX 128M to the list that CAN run 4x2GB @ 1066 and the ram is even the cheap OCZ OCZ2G10664GK

with all ram settings @ auto/default except the v @ 2.1 and manually changing the ddr2 800 setting to ddr2 1066

 

The instructions seems to be confusing but I think what its trying to say is that the AMD CPU AM2+ has an integrated memory controller that's why the boards have no controller on its chipsets. This unfortunately will limit the use of memory of only up to DDR2 1066 which is the highest for that category, to be able to use DDR3 you have to replace the CPU which I think AMD doesn't yet support DDR3.

You can fill the the whole banks if you want to but its just limited to DDR2, that's what the manual is trying to say.

 

The instructions seems to be confusing but I think what its trying to say is that the AMD CPU AM2+ has an integrated memory controller that's why the boards have no controller on its chipsets. This unfortunately will limit the use of memory of only up to DDR2 1066 which is the highest for that category, to be able to use DDR3 you have to replace the CPU which I think AMD doesn't yet to support DDR3.

You can fill the the whole banks if you want to but its just limited to DDR2, that's what the manual is trying to say.

 

^ AM3 CPUs and motherboards are native DDR3...so they will indeed run anything higher in the DDR3 range without any problems - this particular thread is dealing with the issue that AMD states that running 1066MHz isn't supported when running more than 2 banks at the same time...but we've proven it *mostly* wrong.

Psychlone

 

N4N82 4 x 2g Corsair Attempt

All:All:

First of all, like may of you I have been looking for information and run across trash sites, crap info and hostile Neanderthals who need direction to work their way out of a wet paper sack, with both hands, but they are quick to be the "expert" and everyone else is an idiot. I simply wish to say that this site is the best for open dialogue, support for nubiees and those of us that have just enough knowledge and stupidity to be really dangerous and smart enough to ask directions, on occasion. Thus, after monitoring these threads I wish to thank Psychlone and all other for contributing to an extremely helpful site.

So now that the sugar is spilled it is time for the vinegar, well maybe not so bad.

AMD fanatic (Price, quality and support) started with Am486 DX2-50 and now I am upgrading from:

Processor
AMD Sempron(tm) Processor 3000+ 1.8GHz ASUSTeK Computer Inc. K8V-MX Memory : 2GB DDR 400 ATI Radeon HD 3850 AGP WDC WD5000AAKS-00A7B (500.1GB, SATA300, 3.5", 7200rpm, NCQ, 16MB Cache) XP Professional 5.01.2600 (Service Pack 3)

To: (See profile)

Goal: Get 4 x 2gb 1066 to kick ass, (Period).

I am starting from scratch build. Constraints XP SP3 and hardware as noted. Thus, to do the software side and then configure to support 4 x 2gb at 1066+ what is the advise on the introduction of peripherals, i.e basic install with 2 x 2gb chips, add successive HD’s and peripherals (DVD, CD Flash etc..) sound card (Sound Max) then as I have taxed the system to add the 2x 2 gb into the fray. This mobo does not have video output so I will have to include in the base install the Sapphire 4870 (although in VGA mode).

I am accustomed to frequent rebuilds, but like in Apollo 13, I would like to solicit advise on the sequence of switches to turn on in order to minimize my personal brain damage and get to the fun sooner v later. OK the Holy Grail I know and I have built hundreds of machines and I just jump in ad hock and maybe, just maybe there is a better way. In addition, as we are building a potentially useful list and guidelines so we must help to build a fairly robust methodology and here is an example of a good data collection plan which could blow away some of the myth or crate new sacred cows. ( I say this very loosely of course).

I am happy to document and provide details on the progress. I suppose my largest issue as I have not had to dive too deep into the Bios to sort out issues and now this may or may not require that delicate touch to ram the RAM. Thus, a solid logical approach to follow would be good in order to keep the variables (as many as there are) to as much of a minimum as possible.

I do not wish to clog this thread with this traffic, even though it is in support of the 4 x 2 gb 1066 functionality, this should be a side thread “AMD Build to utilize 1066 8 GB functionality”

Open for your comments and suggestions.

Regards,

Steven

 

@vinnie caliper

if your lookin for a stable x64 OS then why not go ahead and download a copy of MS Win7 x64 as at rc1 it's as stable as vista is in rtm+sp1

 

to everyone else thanks for the info i just bought an Asus m3a32mvp-deluxe and this thread is well on its way to helping me choose which CPU + Ram to purchase to go along with it cheers to everyone in here:banana:

 

Hi,

I registered on the forum to say that 4 x 1 gb of corsair dominator pc8500 ddr2 works in the asus m3n72-d motherboard. Need to bump some voltages up and since i'm overclocking my 2.3ghz phenom to 2.95, my memory runs at 1012mhz and its set at 800mhz in the bios. I didnt tried it at 1066 on stock bus speed, but i would believe it would work too.

If you want more details on my overclock, i will happily provide you with the details.

 

Psychlone,
You sure would make a great neighbor to have next door at times..............The M/B list you started is looking good. Im a bit purplexed. My Asus M/B is a M3A78-CM & states it will enable the 3rd Phenom cache & run my sys mem at 1066 which as Partiot mem it is rated to run that speed I see in the bios I have to manually change the mem multiplier. Im running a 9850 Phenom quad. The M/B manual does not visually show the proper banks to fill so I am not sure if I fill the first 2 every other one such as bank 1 & 3 or another option. Very confusing when they dont show the mem manually inserted for 1066. I also read that you said you could get 1066 with all dimms populated do you think I could acheive that so long as I do not OC anything? My last question is what would I have to set my mem multiplier to to acheive the 5200 HT speed?
Dave