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SLI 460 bottleneck

post #1 of 147
Thread Starter 
I had asked here on OCN if I were to SLI 460s would it be bottlenecked by AMD 965, and the answer was YES!

So on stock I would get each gpu no higher than 60% usage in BF3, everything tried on low and ultra 1920x1080

So I OC from 3.4ghz cpu to 3.9 and got this:

302

Highest is 80% usage. It looks okay, but I don't want to OC cpu to 20 ghz just to get the full potential of the GPUS.

Could I lower GPU clock speeds, and that would lower the temps as well!?!


mad.gif
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post #2 of 147
I use EVGA 460 GTX on my back up rig on BF3, no bottleneck...
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post #3 of 147
Thread Starter 
Quote:
Originally Posted by KhaoticKomputing View Post

I use EVGA 460 GTX on my back up rig on BF3, no bottleneck...

Really, what resolution do you play? What game settings, what are your gpu usages? Are you OCed?
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post #4 of 147
Only lowering the GPU voltage will decrease the temperatures.. lowering the clocks isn't going to do anything besides worsen your performance.

I had a 1090T (4GHz) that slightly bottlenecked my 460's only in some games. It was still 80-90% per card usage though on those games.
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post #5 of 147
Quote:
Originally Posted by Aregvan View Post

Really, what resolution do you play? What game settings, what are your gpu usages? Are you OCed?

1080p , high/ultra game settings with most of the goodies turned down or off. With Vsync It holds a pretty solid 60FPS, without Vsync cards stay pegged at 99% usage and FPS is 100+ most of the time. Both with Vsync on and off there are minior dips in FPS into the mid 40's but mostly only on the new maps.
The cards are OC'ed to 850 core and 1950 memory, CPU is at 3.8/2800CPU/NB. Are you sure your CPU is being pegged at 90-100% usage while the GPU's are less than 99%? What drivers are you using? and is your EVGA Program fully up to date and have to ever used MSI Afterburner? My problem with the set up @ 1080p while playing BF3 is the lack of VRAM..
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post #6 of 147
Thread Starter 
Quote:
Originally Posted by KhaoticKomputing View Post

1080p , high/ultra game settings with most of the goodies turned down or off. With Vsync It holds a pretty solid 60FPS, without Vsync cards stay pegged at 99% usage and FPS is 100+ most of the time. Both with Vsync on and off there are minior dips in FPS into the mid 40's but mostly only on the new maps.
The cards are OC'ed to 850 core and 1950 memory, CPU is at 3.8/2800CPU/NB. Are you sure your CPU is being pegged at 90-100% usage while the GPU's are less than 99%? What drivers are you using? and is your EVGA Program fully up to date and have to ever used MSI Afterburner? My problem with the set up @ 1080p while playing BF3 is the lack of VRAM..

CPU at 90% above during gaming. I am on medium/high getting no higher than 80 fps during action in 24 tdm. WT FIRETRUCK!!!!!!!!!!!

but both gpus at 675, 1350... cpu 3.9/nb2.6
1gb vram, no not fully updated, maybe 1 month ago, msi is the same thing.

Newest nvidia drivers 296.10
Edited by Aregvan - 3/17/12 at 11:47am
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post #7 of 147
Thread Starter 
THIS SUCKS:
338

even gpu OCed and still you are getting good usage? WTH

should I up the NB to 2.8 from 2.6 would that help?
Edited by Aregvan - 3/17/12 at 11:46am
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post #8 of 147
Quote:
Originally Posted by Aregvan View Post

THIS SUCKS:
338
even gpu OCed and still you are getting good usage? WTH
should I up the NB to 2.8 from 2.6 would that help?

Maybe a little, how sure are you about the stability of your overclock? Also, in your sig rig you have the slowest HDD you own as your OS drive, is that also where BF3/origin is installed?

EDIT: and just for giggles dose your FPS improve when you turn off AF? EDIT2: do you have a way to monitor your CPU load in real time while playing? or do you have to alt tab out and look?
Edited by KhaoticKomputing - 3/17/12 at 12:02pm
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post #9 of 147
Thread Starter 
Quote:
Originally Posted by KhaoticKomputing View Post

Maybe a little, how sure are you about the stability of your overclock? Also, in your sig rig you have the slowest HDD you own as your OS drive, is that also where BF3/origin is installed?
EDIT: and just for giggles dose your FPS improve when you turn off AF? EDIT2: do you have a way to monitor your CPU load in real time while playing? or do you have to alt tab out and look?

BF3 installed in WD 7200rpm 1tb. No no way to check real time, just alt tab, and see like 5 seconds ago what happened.
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post #10 of 147
Quote:
Originally Posted by Aregvan View Post

BF3 installed in WD 7200rpm 1tb. No no way to check real time, just alt tab, and see like 5 seconds ago what happened.

You can use Hardware Info x64 to show anything you like via riva tuner in game. That will allow you to monitor the GPU usage (through evga or MSI) and monitor anything else with HWinfo. I might try it and keep an eye on your CPU usage VS GPU usage. Make's spotting a bottleneck/lack of performance a little easier.
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