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7950 Quick Question

F

Faction

The Chairman
Joined
May 8, 2006
Messages
5,460
I just got my 7950 today (unfamilure with SLI really..)

From my understanding this is supposed to operate "sli" in one pci-x16 lane.

I also understand that i am supposed to get some sort of indication in games that are SLI capable that it is running.. (im not) as well as a bubble pop up when i start windows saying SLI running

im running the very newest drivers (91.33 betas) and im not getting any of that, im under the impression only one card is running.

Ive updated my mobobios on my Asus a8n5x and i have also clicked "Enable multi-GPU" in the nvidia control panel.

What am i doing wrong?

Edit:
Btw im also getting a 5000 in 3dmark06.... and CPU Z is reporting the pci-e is running at 8x not 16x... is this normal??
 
Actually, CPU Z reports x8 for me as well, seems to be dependent on your motherboard. It does that for me with the sig rig but my performance seems correct so I'm not sweating it.

As far as your 3DMark06 score, that seems low, think that you should be getting in the 8000's. My sig rig running a single 7950GX2 gets about 8400 or so.

With only a single 7950, you actually won't see any SLI messages, this was my experience before I got my second 7950.
 
so it sounds like im missing some setting, i keep hearing about enable AFR.. nvidia's control panel is awful.. where is this option for alternate frame rendering??
 
RMSNV said:
I have almost the same setup as you, minus the physix card, my 4800 is @ stock speeds and a I have a single 7950, and I get close to 13,000 in 3dmark06...I'd check up on your setup homie
Click to expand...

I have 2 Opteron 270s, one single 7950 and I only get around 8000 in 06 as well. In CPUZ it also reports bandwidth of X8. What driver version are you using?
 
RMSNV said:
I have almost the same setup as you, minus the physix card, my 4800 is @ stock speeds and a I have a single 7950, and I get close to 13,000 in 3dmark06...I'd check up on your setup homie
Click to expand...

13,000 is really high for 3DMark06 are you absolutely sure you used 06 and not 05?
13,000 is a what a single 7950 GX2 would get in 3DMark05.
 
mentok1982 said:
13,000 is really high for 3DMark06 are you absolutely sure you used 06 and not 05?
13,000 is a what a single 7950 GX2 would get in 3DMark05.
Click to expand...

Yeah, I believe that RMSNV is mistaking 3DMark05 for 3DMark06.

I wish I could get 13,000 in 3DMark06!
 
i dont have the actual data in front of me (im at work)

but it was pretty much

SM2.0: 3200
SM3.0: 1000
CPU: 1000
 
Something is prolly wrong with your drivers or something. Try installing fresh drivers and see if that fixes the problem. I have a 7900GT with an opty 144 @ 2.6ghz and I score over 5k in 3d mark 06.
 
heatlesssun said:
Yeah, I believe that RMSNV is mistaking 3DMark05 for 3DMark06.

I wish I could get 13,000 in 3DMark06!
Click to expand...


your right

I am mistaking 05 for 06

is 13000 still okay though for 05???
 
just an update:

re-flashed bios

re-installed drivers (91.33)

still no performance increase.

i think im going to throw my computer.

does anyone think it might be because its not an SLI board? (a8n5x)

it is claimed to be a suported board on the nVIdia website..
 
Faction said:
just an update:

re-flashed bios

re-installed drivers (91.33)

still no performance increase.

i think im going to throw my computer.

does anyone think it might be because its not an SLI board? (a8n5x)

it is claimed to be a suported board on the nVIdia website..
Click to expand...

For whatever reason, your SM3 score is way off. It should be closer to 3000.

Just a list of things to try/look at not in any order:

1. Check your 3DMark06 profile. Are you running in quality mode?
2. Try reinstalling 3DMark06 if you haven't already.
3. Got any other benchmarks to see if its a problem just with 3DMark06?

Wish I had the answer, but my gut tells me that its something to do with the 3DMark06 profile.

Good luck!

2.
 
well if this gives you any indication...

i Ran loast coast through the "stress test" and it gives me a 82fps average.. way below what i had on my 7900GTX!

i feel like 600 dollars was spent for nothing. (step up program through evga)
 
3d mark 06 is very cpu limited , but 5000 is not right. Atleats you should get like 7500 (because you have a single core processor while the people who posted their scores have dual core or two optys). I would just play a game and turn on fraps and check your fps. If its below your 7900 gtx average fps' then RMA it.
 
Faction said:
so it seems no one really has much for advice for me.. :(
Click to expand...

also don't make it sound liek nobody is trying to help you, everybody is trying and your pretending like nobody is helping you. People take time ot of their day to give advice/help you. Why don't you say "Thank you for all of the help, but its still not working." If i misread/misinterupted it then i apologize
 
i dont intend to sound ungreatful, but people where starting to get off topic when i stated that. I will call eVGA i guess after this holiday weekend.. but i wonder if it is my motherboard, not the card that is the issue. If only I could find someone with my board and this card.
 
Faction, the problem is not many of us have these cards, there too new and expensive. i know nothing of SLI, never had an SLI system, and it doesnt look like i will for another little while. however ill tell you my speculation.

first off, what is your powersupply. these things are underclocked 7900GTX's but they still want power, and tonnes of it. the minimum iv seen one run on is 400W, and thats cutting it pretty close, Nvidia says aslong as the rails get 27A you should b ok.

if cpuz says your running that slot in only pci-e 8X then its not lieing, and only one card is running.

(just to cover all the bases) you have right clicked your desktop, gone to Nvidia display --> your monitor --> fill the circle "enable SLI". if you havnt theres your problem.

if all thats done (and that should all be default), then i donno. i no i saw this mentioned in one of the reviews i read ill try to find it....

P.S. the dude has every right to whine, the bums posting b4 me havnt offered anything useful.

edit: origonally i thought you had an M2N board, but you have Nforce 4 no SLI. that would probably be it. Bios and your NB have no idea what they're sposed to do. i think all you need is a new (unreleased) version of Forceware. Nvidia has promised that all the problems with Quad SLI and single slot SLI will be resolved with that driver.

edit2: didnt find the artical i was looking for but i did find this:
PC Perspective said:
I said “nearly platform-independent” though because there is one catch: the motherboard has to be able to support the 7950 GX2 and its technical specifications. NVIDIA claims that any board that completely follows the PCI Express specifications should be able to support the 7950 GX2, but that some boards might need a new BIOS to do so. NVIDIA will be keeping a list of the supported motherboards and the appropriate BIOS at http://www.nvidia.com/GX2/ [404] and as of this writing, the list comprised of more than 40 motherboards.

Some of the boards on the list include Intel 925X and 955X based motherboards from Abit and Intel, lots of nForce4 SLI and standard motherboards for both the AMD and Intel platform, as well as the Asus A8R32-MVP motherboard based on the Radeon Xpress 3200 chipset. It is currently the only ATI-based chipset motherboard on the list, but NVIDIA expects more soon. If the list keeps growing and expanding as it has over the past two weeks, then I think we’ll find the GX2 will not have any major compatibility issues.
Click to expand...

looks like maybe you just got unluckey. time to contact Asus technical support. ask em waht to do and whine like a mad-man
 
i appreciate the post,

I will elaborate a little more on my findings.

First, My board is on the compatibility list. (supposedly compatible)

This is a little more interesting:

Turning off AFR(alternate frame rendering) produces worse results in FPS and in 3dmark
which shows that both gpu's are "working" i was hoping that this would not be the case as it would show a clear answer to the problem. Ive tried Multi-GPU mode, Single GPU mode, both providing results as expected (multi-GPU mode giving more FPS).. So confusing.
 
I also purchased a 7950 GX2 a few days ago and I'm running it on Asus A8N-SLI Premium. CPU-Z also reports 8x for me. I haven't benchmarked the card, I bought it to get acceptable (at least near acceptable) frame rates @ 2560x1600 and so far I'm quite pleased with FEAR, Titan Quest, World of Warcraft and Quake 4 performance. Driver version is 91.31.

I think that there's no SLI balloon, because you are not physically running SLI with two cards in two slots. If you look at 7950 reviews, you see that control panel uses term "Multi GPU" (not SLI) term with a single 7950 and SLI term with two physical 7950 cards.

You could also check that you have "Hardware Acceleration" set to "Single Display performance mode" and "SLI Performance Mode" to "Auto-select" in Global 3D settings.
 
Try going to your new style Nvidia control panel. Click on 3D settings.
Then click on performance. set multi gpu configuration tick the multi gpu mode. By defualt it is not checked.
also in your bios or at least in mine there is an SLI setting. Set it to AUTO if avalable if not, set it to 16x if that is avalable..should be one or the other.
That should get you going. Had real low scores, but after finding and setting those i picked up a bunch of fps in 3dmark 03, 05 ,06 i scored in the top 4 in the world for my config in 06
http://service.futuremark.com/compare?3dm06=374488
Hope that helps
 
With regards to the PCI-E running at 8x.....

I have a DFI nF4 SLI mb and if I install a second videocard and run it in SLI mode, then the PCI-E will will only run at 8x, not 16
So, 16x with single card and 8x in SLI.
Samething with other early SLI cards like Asus A8N.

Later editions like DFI nF4 Expert and A8N32 can run with 16x PCI-E in SLI.

Now, I havn't tried a 7950, but I suspect that would also be limited to 8x with my current MB. And I would guess thats whats happened to you as well.

From the test I've heard about, there wasn't much difference (if any) in performance when running 7800 in SLI in PCI-E 8x and 16x so I wouldn't worry to much about it. Though I havnt heard about any such tests with the newer 7900 series so things could have changed, I suppose.
 
The 3d marks are right , its your cpu bottlenecking the card for a fact.

I got 6250 with my cpu running at 2.6ghz on a single core , the reviews we see all are reviewed with cpu which run at 2.8ghz and is a dual core.

I thought that my 7950 was only running on one core but its not.

Dont worry , nothing wrong with it at all.
 
fortunatly you are incorrect...

There was a "hidden" setting that was disabled that jumped my score from 5k to 9k.

everyone was saying "its probably your CPU" haha, my CPU is as fast as a FX-55........ Dont be stupid. everyone also ignored the fact of me saying my 7900GTX was performing faster.

either way im pumped everything is working the way it should.
I hit over 250FPS in HL2:Lost coast haha.
 
Care to share the "hidden setting" to all the people who tried to help you, and the others who just want to know?
 
Yep, I believe unless it's the newer 32x boards that run 16x times 2 then you'll get the 8x running in SLi. I don't know that that's your problem with times, but that's how the boards work.
 
Yes please let us in on your 'hidden settings' discovery.

everyone was saying "its probably your CPU" haha, my CPU is as fast as a FX-55........ Dont be stupid. everyone also ignored the fact of me saying my 7900GTX was performing faster.
Click to expand...

People on this forum are just trying to help you per your request. Take it easy.
 
gman said:
Yep, I believe unless it's the newer 32x boards that run 16x times 2 then you'll get the 8x running in SLi. I don't know that that's your problem with times, but that's how the boards work.
Click to expand...
This is not true. I have a M2N32-SLI board and the 7950 shows in CPUZ to be in 8x mode. Not sure why but many people have the same thing.

And yes please share your "hidden setting" . Curious to know what it is.
 
This is not true. I have a M2N32-SLI board and the 7950 shows in CPUZ to be in 8x mode.
Click to expand...

Really, hmm, I thought it worked that way. Something I'll have to check in to.
 
well the hidden setting was under the nvidia control panel but you have to enable the advanced settings.. (view>advanced)

in 3D settings (in the new CP)
click MANAGE 3D settings

then hardware acceleration defaults to:

Multiple display performance mode,
switching that to Single display performance mode greatly increased performance.

The odd thing is, one would think (or at least its just stupid me) that under 3D Settings the "set multi-GPU configuration" to single display would have changed the other setting in the driver.. but nope.

either way hope that helps someone out, i also apologize for my "stupid people" comment, it was just getting annoying that on all the boards i was posting this problem on that is what people said, my processor was too slow, because they didn't really know what they where talking about.. instead where offering up incorrect analysis of the situation.
 
Faction said:
well the hidden setting was under the nvidia control panel but you have to enable the advanced settings.. (view>advanced)

in 3D settings (in the new CP)
click MANAGE 3D settings

then hardware acceleration defaults to:

Multiple display performance mode,
switching that to Single display performance mode greatly increased performance.

The odd thing is, one would think (or at least its just stupid me) that under 3D Settings the "set multi-GPU configuration" to single display would have changed the other setting in the driver.. but nope.
Click to expand...

Thanks and yes that is odd how that is not tied to the other setting.
 
Faction said:
fortunatly you are incorrect...

There was a "hidden" setting that was disabled that jumped my score from 5k to 9k.

everyone was saying "its probably your CPU" haha, my CPU is as fast as a FX-55........ Dont be stupid. everyone also ignored the fact of me saying my 7900GTX was performing faster.

either way im pumped everything is working the way it should.
I hit over 250FPS in HL2:Lost coast haha.
Click to expand...
Actually, if your chip is running @ 2.75Ghz, your NOT as fast as an FX55, your more like an FX57!!! Have fun
 
Faction said:
well the hidden setting was under the nvidia control panel but you have to enable the advanced settings.. (view>advanced)

in 3D settings (in the new CP)
click MANAGE 3D settings

then hardware acceleration defaults to:

Multiple display performance mode,
switching that to Single display performance mode greatly increased performance.

The odd thing is, one would think (or at least its just stupid me) that under 3D Settings the "set multi-GPU configuration" to single display would have changed the other setting in the driver.. but nope.
Click to expand...

mlaine said:
You could also check that you have "Hardware Acceleration" set to "Single Display performance mode" and "SLI Performance Mode" to "Auto-select" in Global 3D settings.
Click to expand...

Well, that's exactly what I suggested in my earlier reply. Also, apology accepted for stupid people comment ;)
 
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