Guru 3D SLI Users Guide - Page 121

MikeMK · 03-14-2006, 14:04 | posts: 10,506 | Location: London

Nice one Lane! you got the 3000'th post LOL!

BTW guys, something really gives here. I have the other card now running on its own, and it seems im getting severe throttleing after about 15mins, my fps just plummets. This has happend in FEAR, Quake IV and BF2 now. It cant be heat, sure 60-70 degrees is more than im used to on water, but its well within reason for air, and as u know i have adequate case cooling.

My Matrix orbital/coolbits plugin reports that my core drops from 690-630mhz sometimes, which probably isnt a good thing! LOL!. Any ideas?

phrozin · 03-14-2006, 14:42 | posts: 2,835 | Location: Earth

Quote:

Originally Posted by MikeMK

Nice one Lane! you got the 3000'th post LOL!

BTW guys, something really gives here. I have the other card now running on its own, and it seems im getting severe throttleing after about 15mins, my fps just plummets. This has happend in FEAR, Quake IV and BF2 now. It cant be heat, sure 60-70 degrees is more than im used to on water, but its well within reason for air, and as u know i have adequate case cooling.

My Matrix orbital/coolbits plugin reports that my core drops from 690-630mhz sometimes, which probably isnt a good thing! LOL!. Any ideas?

give riva a go mike force 3d with it and o/c your 2d's see if that helps also try different driver may help well aware of nvidia throttling m8 some driver really suck for it

btw give cool bits a miss, these 7900's look like they have some teathing prob's not good m8

MikeMK · 03-14-2006, 14:52 | posts: 10,506 | Location: London

Quote:

Originally Posted by phrozin

give riva a go mike force 3d with it and o/c your 2d's see if that helps also try different driver may help well aware of nvidia throttling m8 some driver really suck for it

btw give cool bits a miss, these 7900's look like they have some teathing prob's not good m8

Will give it ago tonight. Problem is, Rivatuner doesnt support 7900's yet! LOL! And i would agree with the teething probs. A few people are having the same issue, here on guru and on XFX and EVGA websites, so i am not alone. Just hope there is nothing fundamentally wrong with my second card as well as the first

Banky · 03-14-2006, 15:19 | posts: 136

Hey guys, I have a quick question. My 2nd GTX is arriving today, do you have to have and use an SLI profile for every game you have, or can you just set the global driver settings and be done with it?

phrozin · 03-14-2006, 15:58 | posts: 2,835 | Location: Earth

Quote:

Originally Posted by MikeMK

Will give it ago tonight. Problem is, Rivatuner doesnt support 7900's yet! LOL! And i would agree with the teething probs. A few people are having the same issue, here on guru and on XFX and EVGA websites, so i am not alone. Just hope there is nothing fundamentally wrong with my second card as well as the first

yeh read that as well about them you would think by now they would stick decent cooler on them to take the heat, bummer about riva coolbits will throttle its butt off nv's are bad for it real head fxxx i dont know if you remember but i had same sort of issues with fear when i 1st got my 7800's. you can tweak the bios but i wouldent do that yet till you prove the card is fine, looks like you caught between a rock and a hard place mike

suppose you could stick him on the maze that should help thats all i can say to help you atm till riva gets sorted

Roger_D25 · 03-14-2006, 16:15 | posts: 4,336 | Location: New Hampshire

phrozin does your Powerstream 520w have enough power to keep all your systems up and running with no problems, either with your AIT setup or the Nvidia setup? Also if I remember correclty your cards are voltmodded, at least your Nvidia cards are. Well have you even put a mutli-meter to them during a benchmark run while the cards were overclocked? I aks because I have been testing my card everytime I decrease the resistance on the capacitor to increase the voltage to the GPU and have found some things I'm not sure about.

When my card is overclocked heavily (550/1230) and I'm running a 3D benchmark the 3D voltage to my GPU flucuates quite a bit! At the moment my 2D voltage is up to 1.559v and my 3D votlage is set to about 1.561v. If I keep the meter on the card throughout the benchmark run the voltage will flucuate from about 1.559v to about 1.569v which seems like an awfull lot to me but I'm not sure? Do you ever see any voltage flucuations on any of your voltmodded cards when running 3D benchies?

Lane · 03-14-2006, 18:28 | posts: 4,911 | Location: Switzerland

Mike... Have you something write in the debug NV control panel whn it's happend.. ?

Brettbeck · 03-14-2006, 18:35 | posts: 1,465 | Location: UK

Mike what drivers are you using...81.98's? Look at the updates for the 84.20's on nzone:
http://www.nzone.com/object/nzone_do...bit_84.20.html

"Release Highlights:

* Adds support for GeForce 7900 GTX, GeForce 7900 GT, and GeForce 7600 GT. "

MikeMK · 03-14-2006, 18:59 | posts: 10,506 | Location: London

yeah, been using 84.20's and tried 83.91's. Lane - nothing in the debug section in the nvcp mate.

Lane · 03-14-2006, 19:56 | posts: 4,911 | Location: Switzerland

Ok can imagine is not a hardware problem, or the Nvidia driver don't detect anything...

For the PSU, i see you have use the Enermax since long timeMike.. you have never think to go for the liberty 620W? http://www.enermaxusa.com/catalog/pr...e57a983ebe1960

This one have fully pass test of CF and SLI when many site have do reviews for PSU problem encountered with new systems..
( and there's not a lot of PSu have pass all test.. PC@ Cooling and this one..)

MikeMK · 03-14-2006, 20:06 | posts: 10,506 | Location: London

Yeah, i agree lane. btw, i *may* (fingers crossed) have solved it. I was thinking about what phrozin was saying about forcing the clock speeds in riva to stop it throttleing. So i enabled 3d overclocking, applied it at 690/1750, which is the cards stock setting ticked the 'apply settings at startup' and 'fan always on' tabs, and been playing BF2 for a good while with no probs at all. Gonna give it another few tests though.

As for PSU's, the reason i was asking about the FSP one earlier is I have one here, and im gonna give it a try. Looks very very nice. As for the 12v rail that shares CPU/PCI-E one, its not the whole CPU it shares, only the second half of the EPS12v connector i.e. the 2nd half of the 8pin plug the DFI board uses... which isnt even a necessary requirement. The rest of the CPU power is taken from a different 12v line, so i cant think the added draw would be all that much really.

Anyhow, seeing as I have it I may as well see what it can do!

Lane · 03-14-2006, 21:22 | posts: 4,911 | Location: Switzerland

Yes but i m sure it's needed if use on Dfi expert. it's second on 4+4pin 12Vrails you find close to the 24 motherboard pin.. no?..
I think this one is used specially for the X2 or dual core CPU and for DDR stability... give a try to this PSU if you have it.. he he.. nothing to loose Bro!!

I have find a shop can send me the Liberty 620W ( not sure they have it in stock i wait the confirmation tomorow..) begin think take this one in wait find better.. ( i will begin soon a full review test of last PSU if i begin buy one wach month for test them lol!!!)

MikeMK · 03-14-2006, 21:37 | posts: 10,506 | Location: London

Yeah, im gonna give it a try. My Enermax doesnt have the 4+4 Pin connector and its never been a problem, so I dont think its essential, but nice to have.

revenant · 03-14-2006, 22:57 | posts: 1,217 | Location: Bay Area, CA

I almost pulled the trigger on two PNY 7900GTX 512s, but after reading that my PSU shuts down when loaded with two of these super high end cards, I am going to do this right, and buy this PSU 1st..

http://www.performance-pcs.com/catal...oducts_id=3818

it's got a hard switch to go to single rail mode with over 40 amps on that rail.. more than enough with room to grow... next on my list is an Opty 170... the egg has them for less than $400 now. wow. I figure I pop the top on one of those I should get at least 2.8ghz out of it.. then the cards...

Mike - so I hear lots of people are having trouble running these super clocked cards in SLI at their OC'd speeds... when they downclock them they work ok... bummer. Sounds like they rushed the testing.. but anyways... I hope you get yours working!!

Nicksterr · *Last edited by Nicksterr; 03-14-2006 at 23:15.*

Hmm, I got a question. My 600W Aspire PSU rails are rock stable, even though I've jump started it many times when I had my wc'ing installed.

It however only has (1) 6-pin PCI-E power lead. It came with an adapter to convert that to (2) PCI-E connectors for SLI. Do you think that single lead + the Asus EZ-Plug 4-pin molex power connector to the mobo will be enough for my 7900gt co's?

***Edit***
It has these 12v rails: +12V1@18A, +12V2@20A
And it's nvidia SLI certified.

Lane · 03-15-2006, 00:04 | posts: 4,911 | Location: Switzerland

Nice PSU Revenant... i will look for this one too..

Nicksterr , i don't know.. how is the power with 7900GT's... If you begin experience some problem or a limit in OC then.. you can think to the PSU before look if it's the DDR the mb or a HDD..

phrozin · *Last edited by phrozin; 03-15-2006 at 05:36.*

Quote:

Originally Posted by Roger_D25

phrozin does your Powerstream 520w have enough power to keep all your systems up and running with no problems, either with your AIT setup or the Nvidia setup? Also if I remember correclty your cards are voltmodded, at least your Nvidia cards are. Well have you even put a mutli-meter to them during a benchmark run while the cards were overclocked? I aks because I have been testing my card everytime I decrease the resistance on the capacitor to increase the voltage to the GPU and have found some things I'm not sure about.

When my card is overclocked heavily (550/1230) and I'm running a 3D benchmark the 3D voltage to my GPU flucuates quite a bit! At the moment my 2D voltage is up to 1.559v and my 3D votlage is set to about 1.561v. If I keep the meter on the card throughout the benchmark run the voltage will flucuate from about 1.559v to about 1.569v which seems like an awfull lot to me but I'm not sure? Do you ever see any voltage flucuations on any of your voltmodded cards when running 3D benchies?

Roger
I have not had too many probs with it roger nvidia card are not really a problem, yes I have my 7800gtx vmoded I run 1.7v to the core and 2.5v to the memory which pans out about 685/1560 +delta of 60 I run my 4800 at pending on what memory I am running @ either 268x12 @ 1.68v with gskill utt @3.6v vx @ 268 3.4v and 290x11 @1.7 on tccd @ 290 3.2v.

Now On the x1900xtx i do run into voltage problems but at peak load I can run the card @800/900 with out too many problems but when i go higher then I do have some problems I have rearranged my loads differently and using a second psu I am now running 835/920 4800 @ 268x 12 gskill @ 3.6v.

If you see fluctuations on your core I would say your psu is struggling raising the 5v helps 480w v2 antec is a good psu but its really not up to high over clocks the 2 best psu you can buy with single rail 12v are the pcpc 510ssi or the ocz520ps multi rail psu's I try to stay a way from after a bad ex with a 600w tagan. I am looking into a set and forget solution to fix my power wows with a pcpc 1000w should iron out the bugs and when I get my second x1900 it should take care of business

mike
Very interesting m8 I really would be pointing the finger squarely at the drivers I don’t know if you have ever noticed all my runs on single core cpu with nv cards where done on pre 8xxx driver on the dc I only ever ran 8198 as they where the only drivers that did not artefact their ass off. The 8xxx driver seem to drive the memory harder for some reason one minute it runs fine the next you have a black screen nvidia have not done a very good job with driver at all

As for your power supply your enermax should be as good as anything going around its nominal load is 600w with peaks well over 700w fsp are a budget psu not in the same class as enermax doubt I would even entertain the though of running one

Rev
Top power =good

Now for some observation looking at what I have seen around with the 7900's I am far from impressed, over heating random crashing artefacts blah blah blah all I can say is man am I happy I got a x1900, I am really starting to think nvidia got a bit ambitious by over clocking the cards to 700mhz, I recon I will be giving the 7900 the miss this time around and wait to see what the g80 does my xfire should be quick enough for a wile

revenant · 03-15-2006, 07:55 | posts: 1,217 | Location: Bay Area, CA

I just pulled the trigger on an opty 175! whew.. I hope (HOPE) I get a good one... gah! can't wait.. lol.

heads_up · 03-15-2006, 08:37 | posts: 3,516 | Location: Where am I again?

Wanna send me ur naked 3700?

heads_up · 03-15-2006, 08:43 | posts: 3,516 | Location: Where am I again?

Hey, does anyone know why it wont boot past 312htt? im trying for 3Ghz but i cant boot, any ideas? It says it cannot read disk drive over 312...

sava700 · 03-15-2006, 08:44 | posts: 4,837 | Location: In a game world

I've got a PC power and cooling 510 SLI power supply and it ran my BFG 6800 Ultra OC's just fine in SLI... now make sure you don't over look having a large enough backup battery to keep that power flowing without issues to it cause it makes a difference! From what I can tell the 6800 Ultra's use more power than the 7900's which I'll find out tomorrow when they arrive...

MikeMK · 03-15-2006, 09:10 | posts: 10,506 | Location: London

Quote:

Originally Posted by phrozin

Roger
As for your power supply your enermax should be as good as anything going around its nominal load is 600w with peaks well over 700w fsp are a budget psu not in the same class as enermax doubt I would even entertain the though of running one

Im not so sure i would call it 'budget' mate! These things retail for £100+ here. Also, its one of the few PSU's listed specifically for SLI 7900GTX's on SLI Zones list:

http://www.slizone.com/object/slizon..._powersupplies

Its the EPSILON FX700-GLN 700W

So, seeing as its just sat here, im gonna give it a shot and see what it does. Can always take it out if it gives me probs...

phrozin · 03-15-2006, 12:08 | posts: 2,835 | Location: Earth

Quote:

Originally Posted by MikeMK

Im not so sure i would call it 'budget' mate! These things retail for £100+ here. Also, its one of the few PSU's listed specifically for SLI 7900GTX's on SLI Zones list:

http://www.slizone.com/object/slizon..._powersupplies

Its the EPSILON FX700-GLN 700W

So, seeing as its just sat here, im gonna give it a shot and see what it does. Can always take it out if it gives me probs...

nothing wrong with giving it a try m8

I did mention I am a reseller here for fsp didnt I? maybe not

revenant · 03-15-2006, 16:25 | posts: 1,217 | Location: Bay Area, CA

Quote:

Originally Posted by heads_up

Wanna send me ur naked 3700?

Heh! well, everything depends on what kind of OC I get out of this 175... I am sort of already having a little buyer remorse because I see sooooo many of the new 170s OCing extremely well... but I wanted the 11x multi... the chip I got is a denmark core, which is supossedly a very low vcore version of the toledo core essentially, 1.3 - 1.35 vcore is all which is needed, so in theory I should have some more headroom for vcore, which implies more OCability... I hope hope hope to get 2.8 out of this sucker at least.. otherwise i might be better off with the 3700... not sure, I'll have to test... whew... I guess if I don't hit my target the top is coming off it... that seems to yeild about 200 more mhz in stable OC from what I have seen... on water that is.

Anyways.. I might be selling the 3700 or maybe keeping it for my other rig... it's a really nice chip... 800mhz over default and sailing smoothly.

Lane · *Last edited by Lane; 03-15-2006 at 18:05.*

Nice choice to take a 175, you will have a better plage for OC it with this multi and your DDR... I don't regret have take the 150 and not a 148 after discovering the Expert don't like the TCCD at 300 mhz he he..

One ask i think seriously remove my IHS, i have see a lot of screen with do but not a little guide.. nothing really special at first look just make the work with care and slowly for be sure don't bad cut something .. but if you have one.. give a link.!!
( i hope gain some mhz and verifiy if it's the CPU or really the TCCD/prob limit my OC now..)

begin ask me if i will don't wait the Venus is available here finally the price is similar of buy new DDR...
I have see many flash the bios of the expert with Venus bios.. but i have not certitude it will solve the prob TCCD/Expert