DWilmsmeyer
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I have 2 GTX 295. If I put them into quad SLI my performance is bad (slow framerates, game lockups/freezes, video driver crashes).
However, each 295 on its own has very good performance. That is, I get pretty decent framerates with the video options all the way up.
But, as i understand it, SLI is supposed to be BETTER performance than just one card. Right?
Now, I have tweaked the settings in the nvidia control panel a LOT of different ways, but to no avail.
I would really appreciate some guidence here.
THANKS!
EVGA X58 sli3 classified - E760 Intel i7 980X OC 4.2Ghz EVGA GTX 580 (x3 SLI) Corsair GT 12GB (6 x 2GB) DDR3 2000 (PC3 16000) 8-8-8-20-1T OCZ Vertex2 SSD (C: = 120GB , D: = 2*240GB Raid0) Thermaltake ToughPower 1200W Antec 1200 case Koolance Exos 2.5 water cooled CPU + Video Cards HP ZR30w 30" 2560 x 1600 S-IPS panel
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Re:My SLI performance is worst than the single video card working on its own
2009/12/03 21:21:15
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Quad SLI just doesn't scale that well.
There are very few games that do scale pretty well with Quad SLI but for the most part Tri SLI is what games like.
Try benchmarking using Vantage with Quad SLI and each card by them self.
Do you have your 920 overclocked?
If not you might want to try going for at least 3.6GHz.
The faster the CPU is the better it can send info to the cards
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Sir Loin
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Re:My SLI performance is worst than the single video card working on its own
2009/12/03 21:24:34
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What drivers are you running?
Core i7 920 C0 @ 3.8Ghz (20 x 190 1.275V) | 2 x EVGA GTX 460 1Gb EE in SLI | GTX 240 Physx | Asus P6T OCZ Platinum 6GB @1520MHz 7-7-7-24-72-1T | 2x WD Caviar Black 500GB RAID 0 | WD 500GB Caviar Green BFG EX-1200 PSU | Cooler Master V8
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DWilmsmeyer
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Re:My SLI performance is worst than the single video card working on its own
2009/12/04 05:39:57
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My driver is 195.62
and
I am OCing my 960 CPU to 4.189 Ghz.
EVGA X58 sli3 classified - E760 Intel i7 980X OC 4.2Ghz EVGA GTX 580 (x3 SLI) Corsair GT 12GB (6 x 2GB) DDR3 2000 (PC3 16000) 8-8-8-20-1T OCZ Vertex2 SSD (C: = 120GB , D: = 2*240GB Raid0) Thermaltake ToughPower 1200W Antec 1200 case Koolance Exos 2.5 water cooled CPU + Video Cards HP ZR30w 30" 2560 x 1600 S-IPS panel
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Re:My SLI performance is worst than the single video card working on its own
2009/12/04 05:44:07
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What games do you get problems in?
Try switching drivers
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Sir Loin
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Re:My SLI performance is worst than the single video card working on its own
2009/12/04 06:20:01
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Also, have you tried running each card separately? One of the cards could be defective.
Core i7 920 C0 @ 3.8Ghz (20 x 190 1.275V) | 2 x EVGA GTX 460 1Gb EE in SLI | GTX 240 Physx | Asus P6T OCZ Platinum 6GB @1520MHz 7-7-7-24-72-1T | 2x WD Caviar Black 500GB RAID 0 | WD 500GB Caviar Green BFG EX-1200 PSU | Cooler Master V8
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limpkorn
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Re:My SLI performance is worst than the single video card working on its own
2009/12/04 08:55:58
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Well he did say they both run well alone, just not in Quad SLI.
What games specifically are you having trouble with and what resolution are you running? Quad SLI in my book is preety much crap with the cost and the performance issues that nvidia never seems to solve with drivers. Once again Quad SLi is being left to linger with the attention focused on Fermi coming out. Of course this is my speculation I don't have any facts to back this up, but I've already seen the crap quad sli can be with 7950X2s 9800GX2s and now GTX295s.
Really the only realy big advantage I see quad SLI having is for benchmarking which is probably the peopel that hardly run in to gaming problems that have these quad sli setups and hardly game, but benchmark the heck out of these cards.
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atlrus
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Re:My SLI performance is worst than the single video card working on its own
2009/12/04 09:18:53
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Don't give up, the majority of us are trully enjoying the quad sli.
First and foremost, did you overclock the cards?
EVGA x58 4xSLI Classified i7 920 @ 4.1 ghz (C0/C1) stable 3x2GB Dominator GT 120 GB RevoDrive PCI SSD (OS) + 2x128GB SSD + 3x1.5TB Caviar 2 SLI x EVGA GTX 580 SC CoolerMaster Pro 1250W PSU 27" Samsung P2700HD Win 7
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Foellarbear
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Re:My SLI performance is worst than the single video card working on its own
2009/12/04 11:05:40
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atlrus
Don't give up, the majority of us are trully enjoying the quad sli.
First and foremost, did you overclock the cards?
yeah don't give up! you can do it!
Cooler Master HAF 932 Build: -Intel Core i7 920@ 3.8 GHz (C0/C1) -Cooler Master V8 -MSI x58 Pro -EVGA & PNY GTX 295's in QUAD SLI -6 GB DDR3 Triple Channel OC'ed (1440 MHz) -PC Power & Cooling 910 Silencer -Windows 7 Ultimate 64 bit I have Polar Bear Pride! Do you?
I fold everday to help save people's lives.
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DWilmsmeyer
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Re:My SLI performance is worst than the single video card working on its own
2009/12/04 12:07:33
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I have OC the cards, but that seems to have no affect (actually it has adverse affects when I OC the sliders past half way).
Also, the problems I am seeing are seen in all games that demand Video performance (L4D2, Stalker CS, COD, etc).
Now, I am not certain that I don't have an issue with one of the cards, but when I run them individually, they both seem to behave just fine (except for the fact that if I turn the settings ALL the way up, then they drop some frames).
I guess my main question is (to you fellow 295 quad SLI owners/users), do you see a noticeable performance boost from using these cards in quad SLI as opposed to just a single 295?
Also, I am curious if 3 way SLI (say with 3 x 285) would be better than my quad SLI with the 295.
Bottom line is, I am very impressed with the 295, but I find it hard to believe 2 x 295 is not better than a single 295. And if it is supposed to be better performance, then what is wrong with my configuration. :-(
EVGA X58 sli3 classified - E760 Intel i7 980X OC 4.2Ghz EVGA GTX 580 (x3 SLI) Corsair GT 12GB (6 x 2GB) DDR3 2000 (PC3 16000) 8-8-8-20-1T OCZ Vertex2 SSD (C: = 120GB , D: = 2*240GB Raid0) Thermaltake ToughPower 1200W Antec 1200 case Koolance Exos 2.5 water cooled CPU + Video Cards HP ZR30w 30" 2560 x 1600 S-IPS panel
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atlrus
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Re:My SLI performance is worst than the single video card working on its own
2009/12/04 12:19:51
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I guess my main question is (to you fellow 295 quad SLI owners/users), do you see a noticeable performance boost from using these cards in quad SLI as opposed to just a single 295? Yes, big time, way more than the 40% I expected. Did you try running them in quad sli on all stock settings? Maybe your overclock is too high and downclocks the cards or crashes the drivers.
EVGA x58 4xSLI Classified i7 920 @ 4.1 ghz (C0/C1) stable 3x2GB Dominator GT 120 GB RevoDrive PCI SSD (OS) + 2x128GB SSD + 3x1.5TB Caviar 2 SLI x EVGA GTX 580 SC CoolerMaster Pro 1250W PSU 27" Samsung P2700HD Win 7
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atfrico
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Re:My SLI performance is worst than the single video card working on its own
2009/12/04 12:20:03
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Have you tried setting up the PCI-E Maximum Payload Size to 4096 on your bios? I know the default is 128mb, but the previous recent bios change this, now you are able to set it up to the highest value. Check if your settings on the PCI Device is set to PCI-EX instead of PCI Slot Also, read and click on this link it talks about hot to set up SLI, 3xSLI & 4XSLI http://forums.nvidia.com/index.php?showtopic=150597 Good Luck Another thing, dont OC the cards, set them in stock speeds and increase OC little by little
post edited by atfrico - 2009/12/04 12:27:47
T hose who abuse power, are nothing but scumbags! The challenge of power is how to use it and not abuse it. The abuse of power that seems to create the most unhappiness is when a person uses personal power to get ahead without regards to the welfare of others, people are obsessed with it. You can take a nice person and turn them into a slob, into an insane being, craving power, destroying anything that stands in their way. Affiliate Code: 3T15O1S07G
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Foellarbear
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Re:My SLI performance is worst than the single video card working on its own
2009/12/04 12:37:11
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yes i have experienced at least a 40% increase in FPS. Crysis has more than doubled my FPS. Ran 3dmark and got a score of near 35,000.
Cooler Master HAF 932 Build: -Intel Core i7 920@ 3.8 GHz (C0/C1) -Cooler Master V8 -MSI x58 Pro -EVGA & PNY GTX 295's in QUAD SLI -6 GB DDR3 Triple Channel OC'ed (1440 MHz) -PC Power & Cooling 910 Silencer -Windows 7 Ultimate 64 bit I have Polar Bear Pride! Do you?
I fold everday to help save people's lives.
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DWilmsmeyer
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Re:My SLI performance is worst than the single video card working on its own
2009/12/04 14:51:14
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Ok, so I made some BIOS adjustments . . .
1. Set MEMORY LOW GAP to 3 G
2. Set MAXIMUM PAY LOAD to 4096
3. Set INIT DISPLAY FIRST to PCIEx
. . . and the SLI performance is MUCH better! Excellent suggestions atfrico!
Anyway, now I am testing everything, but so far, all is good.
Now, I have another question for you 295 Quad SLI users . . . does it improve your game performance if you OC the 295 cards?
MANY, MANY THANKS!
EVGA X58 sli3 classified - E760 Intel i7 980X OC 4.2Ghz EVGA GTX 580 (x3 SLI) Corsair GT 12GB (6 x 2GB) DDR3 2000 (PC3 16000) 8-8-8-20-1T OCZ Vertex2 SSD (C: = 120GB , D: = 2*240GB Raid0) Thermaltake ToughPower 1200W Antec 1200 case Koolance Exos 2.5 water cooled CPU + Video Cards HP ZR30w 30" 2560 x 1600 S-IPS panel
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atfrico
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Re:My SLI performance is worst than the single video card working on its own
2009/12/04 18:42:25
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DWilmsmeyer
Ok, so I made some BIOS adjustments . . .
1. Set MEMORY LOW GAP to 3 G
2. Set MAXIMUM PAY LOAD to 4096
3. Set INIT DISPLAY FIRST to PCIEx
. . . and the SLI performance is MUCH better! Excellent suggestions atfrico!
Anyway, now I am testing everything, but so far, all is good.
Now, I have another question for you 295 Quad SLI users . . . does it improve your game performance if you OC the 295 cards?
MANY, MANY THANKS!
You are welcome DWilmsmeyer, I am glad you have it working and you were able to read the link I gave you.
T hose who abuse power, are nothing but scumbags! The challenge of power is how to use it and not abuse it. The abuse of power that seems to create the most unhappiness is when a person uses personal power to get ahead without regards to the welfare of others, people are obsessed with it. You can take a nice person and turn them into a slob, into an insane being, craving power, destroying anything that stands in their way. Affiliate Code: 3T15O1S07G
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