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SLI Issues

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drums101   07-23-2009 at 08:47:43 PM

Ok So I have 2 bfg gtx 285s in SLI and an intel dual core cpu at 4.1ghz. I run games at the right fps when not running SLI but when I enable SLI I get lower fps. I know that both cards have plenty of power and I have tested this on two different motherboards. Even if the cpu is a bottleneck to the cards I would still see a jump in fps when going from one card to two not a loss in performance. But the thing that really gets me is that my vantage score is right on target its right around 23k. The p score. the two games that I test on are Call of duty world at war and Far cry 2. Any suggestions on what to do? I would appreciate any help. I have tested each card individually and they both work fine by themselves. Thanks.

------------------------------ Core i7 950@ 4GHZ-6gb Corsair Dominator 1600mhz-GTX285 OCX SLi-ASUS P6T Deluxe V2-WD 300GB Velociraptor
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Bronze Graphics badge OvrClkr   07-23-2009 at 08:53:22 PM
- 0 +

What brand is your 780i motherboard?

------------------------------ 550 @ 4.0 Ghz 1.425v
BFG GTX 260 (216)
4GB G.Skill @ 960MHz
Thermaltake TP 850w
Reply to OvrClkr
knotknut   07-23-2009 at 09:50:03 PM
- 0 +

What power supply are you using?

http://www.pcpower.com/Power_Supply_Selector.html

http://www.corsair.com/

here a couple of PSU guides from people who Know.

Reply to knotknut
Bronze Graphics badge OvrClkr   07-23-2009 at 09:59:05 PM
- 0 +

I dont think uderpowering a GPU will give you lower frames when in SLI, I think its a bios setting he needs to change. I have an Asrock AMD board that is similar to some ASUS boards that have a switch card, meaning I have to switch the card to the opposite position if I want to run Sli, if not it either runs alot slower or I get an error....

Thats why I am asking him what kind of 780i (brand) does he have... but it looks like he has not been online for a while.....ohh well...


Message edited by OvrClkr on 07-23-2009 at 10:13:24 PM
------------------------------ 550 @ 4.0 Ghz 1.425v
BFG GTX 260 (216)
4GB G.Skill @ 960MHz
Thermaltake TP 850w
Reply to OvrClkr
drums101   07-23-2009 at 10:04:39 PM
- 0 +

Oh sorry i have been busy trying to fix this and I have an EVGA 780i board and I have run 9800gtx sli on it before no problems as for the psu its a 750 watt pcp&c it does the job fine thanks for the suggestions

------------------------------ Core i7 950@ 4GHZ-6gb Corsair Dominator 1600mhz-GTX285 OCX SLi-ASUS P6T Deluxe V2-WD 300GB Velociraptor
 Reply to drums101
Bronze Graphics badge OvrClkr   07-23-2009 at 10:14:41 PM
- 0 +

Yea the PSU is more than enough for DUAL 9800GTX's, have you tried looking in the BIOS for an SLI setting?

------------------------------ 550 @ 4.0 Ghz 1.425v
BFG GTX 260 (216)
4GB G.Skill @ 960MHz
Thermaltake TP 850w
Reply to OvrClkr
drums101   07-23-2009 at 10:28:30 PM
- 0 +

well im running gtx 285s now so it does take more power but the green leds on the cards are always green under load so thats all good and yea there isnt anything about SLI in the bios except for the SLI ready ram

------------------------------ Core i7 950@ 4GHZ-6gb Corsair Dominator 1600mhz-GTX285 OCX SLi-ASUS P6T Deluxe V2-WD 300GB Velociraptor
 Reply to drums101
Bronze Graphics badge OvrClkr   07-23-2009 at 11:01:04 PM
- 0 +

Ok, im at work at the moment and kinda swamped.... once I get home if you have not found the solution, I will look into this further.... we will fix this issue today....

------------------------------ 550 @ 4.0 Ghz 1.425v
BFG GTX 260 (216)
4GB G.Skill @ 960MHz
Thermaltake TP 850w
Reply to OvrClkr
drums101   07-23-2009 at 11:30:15 PM
- 0 +

thanks man i apprecitate it

------------------------------ Core i7 950@ 4GHZ-6gb Corsair Dominator 1600mhz-GTX285 OCX SLi-ASUS P6T Deluxe V2-WD 300GB Velociraptor
 Reply to drums101
Bronze Graphics badge OvrClkr   07-23-2009 at 11:38:41 PM
- 0 +

Np, one last thing before I leave work.... What model of 285's are you using...since I have to call EVGA anyway when I get home I can use this info to kill 2 birds with 1 stone....

------------------------------ 550 @ 4.0 Ghz 1.425v
BFG GTX 260 (216)
4GB G.Skill @ 960MHz
Thermaltake TP 850w
Reply to OvrClkr
drums101   07-23-2009 at 11:41:12 PM
- 0 +

I have two BFG gtx 285 OCX

------------------------------ Core i7 950@ 4GHZ-6gb Corsair Dominator 1600mhz-GTX285 OCX SLi-ASUS P6T Deluxe V2-WD 300GB Velociraptor
 Reply to drums101
megamanx00   07-24-2009 at 12:03:53 AM
- 0 +

Well the first thing to check is to make sure that your cards are running with the correct number of PCI-E lanes and that they are indeed running in SLI. Run GPU-Z to check their status. Since SLI adds CPU overhead it can cause a drop in FPS, especially if your CPU is the bottleneck. Before blaming the CPU though I would check to see if it's a driver problem. Uninstall your drivers and use drive cleaner pro. From there install current drivers and see if the situation improves.

------------------------------ Playing X-Men Origins: Wolverine Athlon 64 X2 5000+ @3.24 Brisbane | GIGABYTE GA-MA790X-DS4 | 4GB Mushkin DDR2 1066 | Plextor 760A| 2x 3850 512M CF| WD 1TB Black| Fortron Blue Storm II 500W | APEVIA X-Dreamer Black | Win XP Pro & Vista Buisness 32bit
 Reply to megamanx00
drums101   07-24-2009 at 12:27:55 AM
- 0 +

yeap i have done everything with the drivers I have tried this one win 7 64 vista 64 xp 32 and tinyxp and I get the same exact issue. I know for a fact that SLI has been on b/c of gpuz like you said. I have even tried different CPUs a quad core at 3.4 and then a dual core at 4.1 with same results i have tried different boards a evga 780i and a xfx 680i lt to no avail the only thing that I think it is is possibly the cards themselves but then i dont get why 3dmark vantage gave me a good score of 23k with sli while games lose fps with sli its crazy!!!

Message quoted 1 times
------------------------------ Core i7 950@ 4GHZ-6gb Corsair Dominator 1600mhz-GTX285 OCX SLi-ASUS P6T Deluxe V2-WD 300GB Velociraptor
 Reply to drums101
Bronze Graphics badge OvrClkr   07-24-2009 at 03:53:52 AM
- 0 +

drums101 wrote :

yeap i have done everything with the drivers I have tried this one win 7 64 vista 64 xp 32 and tinyxp and I get the same exact issue. I know for a fact that SLI has been on b/c of gpuz like you said. I have even tried different CPUs a quad core at 3.4 and then a dual core at 4.1 with same results i have tried different boards a evga 780i and a xfx 680i lt to no avail the only thing that I think it is is possibly the cards themselves but then i dont get why 3dmark vantage gave me a good score of 23k with sli while games lose fps with sli its crazy!!!



Im on hold with EVGA right now....

Message quoted 2 times
------------------------------ 550 @ 4.0 Ghz 1.425v
BFG GTX 260 (216)
4GB G.Skill @ 960MHz
Thermaltake TP 850w
Reply to OvrClkr
drums101   07-24-2009 at 06:19:54 AM
- 0 +

OvrClkr wrote :

Im on hold with EVGA right now....




how did it go you get any information that helped you? or did they blow smoke up your a$$? lol

------------------------------ Core i7 950@ 4GHZ-6gb Corsair Dominator 1600mhz-GTX285 OCX SLi-ASUS P6T Deluxe V2-WD 300GB Velociraptor
 Reply to drums101
drums101   07-24-2009 at 06:28:54 AM
- 0 +

OvrClkr wrote :

Im on hold with EVGA right now....



how did it go you get any information that helped you? or did they blow smoke up your a$$? lol

Message quoted 1 times
------------------------------ Core i7 950@ 4GHZ-6gb Corsair Dominator 1600mhz-GTX285 OCX SLi-ASUS P6T Deluxe V2-WD 300GB Velociraptor
 Reply to drums101
drums101   07-24-2009 at 06:38:49 AM
- 0 +

wow my bad on the double post idk how I did that

------------------------------ Core i7 950@ 4GHZ-6gb Corsair Dominator 1600mhz-GTX285 OCX SLi-ASUS P6T Deluxe V2-WD 300GB Velociraptor
 Reply to drums101
Bronze Graphics badge OvrClkr   07-24-2009 at 08:24:43 AM
- 0 +

drums101 wrote :

how did it go you get any information that helped you? or did they blow smoke up your a$$? lol



sorry for the delay....and yes smoke up my @ss... i called both BFG and EVGA and accomplished nothing. 45 min wait then put on hold and then the dude hung up (BFG), 25 min wait then put on hold and then he had no idea of how to even answer the easiest questions.....

------------------------------ 550 @ 4.0 Ghz 1.425v
BFG GTX 260 (216)
4GB G.Skill @ 960MHz
Thermaltake TP 850w
Reply to OvrClkr
HundredIslandsBoy   07-24-2009 at 10:23:21 AM
- 0 +

Since your 3DMark Vantage scores basically confirms functionality with hardware and driver, I would look at the game publlisher site for SLi issues and perhaps a patch.

BTW, what game/s is it, resolution, AA settings?

Reply to HundredIslandsBoy
swifty_morgan   07-24-2009 at 05:49:21 PM
- 0 +

go into the control panel and disable physics. While you're there check and see that vsync is off. What happens ?...... If you're not running windows7 go back and find slightly older drivers..... ones that don't say anything about being Windows7 capable.

Message quoted 1 times
Reply to swifty_morgan
Bronze Graphics badge mousemonkey   07-24-2009 at 06:35:09 PM
- 0 +

swifty_morgan wrote :

go into the control panel and disable physics. While you're there check and see that vsync is off. What happens ?...... If you're not running windows7 go back and find slightly older drivers..... ones that don't say anything about being Windows7 capable.


What a stupid suggestion, just what a noob would suggest!

Message quoted 1 times
------------------------------ [:mousemonkey:1] http://img29.imageshack.us/img29/5041/vr2009champ.jpg
 Reply to mousemonkey
swifty_morgan   07-24-2009 at 06:43:45 PM
- 0 +

mousemonkey wrote :

What a stupid suggestion, just what a noob would suggest!




Baby steps.......... and up yours dipshit.

Message quoted 1 times
Reply to swifty_morgan
drums101   07-24-2009 at 06:53:32 PM
- 0 +

I know vsync is off and I will try the older drivers the games that are giving me issues that I have tested are Call of duty world at war and far cry 2. 1920x1200 4x AA maxed out. I am pretty sure every game is giving me issue tho.

------------------------------ Core i7 950@ 4GHZ-6gb Corsair Dominator 1600mhz-GTX285 OCX SLi-ASUS P6T Deluxe V2-WD 300GB Velociraptor
 Reply to drums101
swifty_morgan   07-24-2009 at 06:59:20 PM
- 0 +

I looked up the power supply. 60amps. A single GTX260 requires 36 I think it is. I run an 850 in the 70amp neighborhood. No problems. I tried running them ( sli ) on a 52amp psu.., not so sweet.

Reply to swifty_morgan
Bronze Graphics badge mousemonkey   07-24-2009 at 07:01:51 PM
- 0 +

swifty_morgan wrote :

Baby steps.......... and up yours dipshit.


What a mature and measured response, a shining example of how much knowledge you don't have.

Message quoted 1 times
------------------------------ [:mousemonkey:1] http://img29.imageshack.us/img29/5041/vr2009champ.jpg
 Reply to mousemonkey
drums101   07-24-2009 at 07:15:27 PM
- 0 +

well to check that I ran each off of a different psu too. I ran one off of the 750watt 60amp and another off of a 600watt ocz supply so that cant be it either

------------------------------ Core i7 950@ 4GHZ-6gb Corsair Dominator 1600mhz-GTX285 OCX SLi-ASUS P6T Deluxe V2-WD 300GB Velociraptor
 Reply to drums101
drums101   07-24-2009 at 07:23:17 PM
- 0 +

so what i am getting from you guys is that it mostly likely is a nvidia control panal issue?

------------------------------ Core i7 950@ 4GHZ-6gb Corsair Dominator 1600mhz-GTX285 OCX SLi-ASUS P6T Deluxe V2-WD 300GB Velociraptor
 Reply to drums101
swifty_morgan   07-24-2009 at 07:25:26 PM
- 0 +

back in the day when I did look, enabling sli did slow frame rates down in some games. I really don't pay any attention to it any more. I go for the "playability' vs fps. I can't look and test it now because my sli-er's processor took a dump. But it might still be the same deal. Bed time for me now. Good luck.

Reply to swifty_morgan
Successful_troll   07-24-2009 at 08:35:27 PM
- 0 +

mousemonkey wrote :

What a mature and measured response, a shining example of how much knowledge you don't have.


Mousemonkey think that know everything but in reality he do not know anything….

So do not listen to them.

Message quoted 1 times
Reply to Successful_troll
Bronze Graphics badge mousemonkey   07-24-2009 at 09:04:37 PM
- 0 +

Successful_troll wrote :

Mousemonkey think that know everything but in reality he do not know anything….

So do not listen to them.


:pfff: Somebody really needs to work on their grammar.

------------------------------ [:mousemonkey:1] http://img29.imageshack.us/img29/5041/vr2009champ.jpg
 Reply to mousemonkey
Bronze Graphics badge OvrClkr   07-24-2009 at 10:10:33 PM
- 0 +

smells like a FIGHT!!!!!!!!

Message quoted 1 times
------------------------------ 550 @ 4.0 Ghz 1.425v
BFG GTX 260 (216)
4GB G.Skill @ 960MHz
Thermaltake TP 850w
Reply to OvrClkr
Bronze Graphics badge mousemonkey   07-24-2009 at 10:22:07 PM
- 0 +

OvrClkr wrote :

smells like a FIGHT!!!!!!!!


[:mousemonkey] If the forums village idiot is going to post a comment that attempts to put individuals down, it should at least be legible.

------------------------------ [:mousemonkey:1] http://img29.imageshack.us/img29/5041/vr2009champ.jpg
 Reply to mousemonkey
Bronze Graphics badge OvrClkr   07-24-2009 at 11:10:18 PM
- 0 +

I agree, but you guys have to calm down a bit, we come here to help and learn and not argue about little things that really dont matter....

Message quoted 1 times
------------------------------ 550 @ 4.0 Ghz 1.425v
BFG GTX 260 (216)
4GB G.Skill @ 960MHz
Thermaltake TP 850w
Reply to OvrClkr
Bronze Graphics badge mousemonkey   07-24-2009 at 11:19:16 PM
- 1 +

OvrClkr wrote :

I agree, but you guys have to calm down a bit, we come here to help and learn and not argue about little things that really dont matter....


I embody the epitome of serenity :ange: .

Message quoted 1 times
------------------------------ [:mousemonkey:1] http://img29.imageshack.us/img29/5041/vr2009champ.jpg
 Reply to mousemonkey
Bronze Graphics badge OvrClkr   07-24-2009 at 11:51:23 PM
- 0 +

mousemonkey wrote :

I embody the epitome of serenity :ange: .



+1 "mousemonkey" [:waffle911]

Message quoted 1 times
------------------------------ 550 @ 4.0 Ghz 1.425v
BFG GTX 260 (216)
4GB G.Skill @ 960MHz
Thermaltake TP 850w
Reply to OvrClkr
Bronze Graphics badge mousemonkey   07-24-2009 at 11:59:42 PM
- 0 +

OvrClkr wrote :

+1 "mousemonkey" [:waffle911]


Thank you, I shall now sit back and wait to see whether the OP manges to sort out the problem they are having.

------------------------------ [:mousemonkey:1] http://img29.imageshack.us/img29/5041/vr2009champ.jpg
 Reply to mousemonkey
HundredIslandsBoy   07-25-2009 at 07:03:10 AM
- 0 +

You can always try to set the Nvidia Control Panel with all Global and Program settings to restored to default.

Reply to HundredIslandsBoy
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