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Having SLI issues

post #1 of 12
Thread Starter 
Just bought a second 670 4GB SC to run in SLI. But when playing bf3 there is no difference in FPS. The gpu's wont throttle over like 700 mhz.

Im not currently running an overclock on my FX8150 so im assuming that could also be the bottleneck. If i do overclock should i turn turbo core off?

I just dont see the CPU bottlenecking my 670's that bad. Any suggestions?

I have a water cooler, but a while back i too the OC off because of stability issues/laziness lol
Edited by xxgowxx - 5/29/13 at 4:56pm
post #2 of 12
Prefer max performance and sli enabled in Nvidia control panel?
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post #3 of 12
Thread Starter 
Yes thats on. Also i turn the sync option off in precision x and change the OC on the card by a few mhz just to see what it hits and it only goes up to 783 even then.

Im downloading the lastest drivers but its going to take forever and a half
post #4 of 12
This is a noob question, but I have to ask.... Is SLI enabled in the control panel? Have you updated your drivers? Is the SLI bridge connected properly? I have to ask these stupid questions, because we know nothing about you.
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post #5 of 12
Thread Starter 
Quote:
Originally Posted by Jolly Roger View Post

This is a noob question, but I have to ask.... Is SLI enabled in the control panel? Have you updated your drivers? Is the SLI bridge connected properly? I have to ask these stupid questions, because we know nothing about you.

Yes, No, Yes.

The internet is epic slow here so im trying to dl the drivers so i suppose once thats done ill post an update.

Update: Running a 4.5ghz OC on the cpu. gpu's still dont throttle past 700 mhz. Maybe the driver update will fix the issues.
post #6 of 12
Thread Starter 
UPDATE: Ok so new drivers. No luck. Any suggestions? when i turn sli on the clock just wont go up at all..
post #7 of 12
hello,
have you turned off v-sync in game please?
it will lock your frame rate on some games.
    
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post #8 of 12
Thread Starter 
Ok so it turns out out was precision X. Now the issue is the frame rate in games. I turned off v-sync in bf3 and im getting fps that is only a little bit better than what i was getting with my 670 single. I have no idea why but its rediculous. Anyone have ANY ideas on this?
Edited by xxgowxx - 5/29/13 at 6:18pm
post #9 of 12
What Cpu do you have? You could have a bottleneck. See if your cards are running near 99% usage
post #10 of 12
ok, you have water?
oc your cpu to 4ghz, should be easy, just need to turn off everything ion the cpu advanced tab like c1e, c6 state and apm, leave cool and quiet on, it will save you money, and it a few pounds a week over here.
go to oc tuner change to manual and change cpu multiplier to 20x and disable turbo, enable cpu load line to high, it should boot up at 4ghz.
have another look at your frame rate.
don't forget windows power option and set to balanced for downclocking and high for flat 4ghz.
Edit: I see you already tried it at 4.5ghz,
this is odd as when i'm at 4.6 I get 60fps, at 4ghz is near 40.
I had the same issue when I got my two crossfire gpu's, the draw distance and there was no tearing ever was the benefit from it, since then I went for a single huge gpu.
Edited by MrPerforations - 5/29/13 at 6:33pm
    
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