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post #11 of 46
Thread Starter 
Quote:
Originally Posted by MR KROGOTH View Post
When you dedicate a GPU to PHYSx, you take a HUGE load off of your CPU.
when not dedicated to physx, the physx processing is done on my second card anyway >.>

i just want sli to give me my 60 fps minimum...that's all...
    
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post #12 of 46
When not dedicated it picks the cpu. Only auto or manually choosing a card puts physx on a gpu.
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post #13 of 46
Thread Starter 
Quote:
Originally Posted by Rangerscott View Post
When not dedicated it picks the cpu. Only auto or manually choosing a card puts physx on a gpu.
actually for me it auto sets to second gtx 560...and i selected that option outside of "auto" just to make sure...

still having issues...any ideas?
    
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post #14 of 46
Fire up Afterburner and make sure both gpu usage's are checked off to show on screen. See if they're being utilized a good amount.

Wasn't there a problem with the 500's power saving feature, where it would throttle down for no reason?

I'll fire up Mafia II with my rig and see how she does. I have 3 screens now so may not go so well now. LOL
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post #15 of 46
Thread Starter 
Quote:
Originally Posted by Rangerscott View Post
Fire up Afterburner and make sure both gpu usage's are checked off to show on screen. See if they're being utilized a good amount.

Wasn't there a problem with the 500's power saving feature, where it would throttle down for no reason?

I'll fire up Mafia II with my rig and see how she does. I have 3 screens now so may not go so well now. LOL
i checked and they're not running 100% at all times...they rebound between 25 and 60% while single card runs 100% and physx card runs 30%

i'm thinking it's an sli issues because my processor shouldn't limit these cards...not this much anyway

i didnt know about the power limiter...how do i turn it off?
Edited by victorofhavoc - 2/27/11 at 5:41pm
    
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post #16 of 46
I think it's built into the cards. I don't know a whole lot about the 500's but there's threads on here about them.

Yea it's got to be your sli setup. I just ran mine and they're both high 90% constant. It's a very demanding game when physx is on.

It could be your mobo or ram. I had both the 780i and 780i FTW and was not impressed at all and it was a terrible overclocker for me. I'm trying to find out if it has two "true" 16x pci-e slots and one 8x or if it's one 16x and two 8x slots and when SLi is enabled both slots run at 8x. From what I've read and what people have tested it's not a noticeable hit in performance.


What drivers are you running? I wonder if your audigy card is interfering.
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post #17 of 46
Here's a dumb question. What speed do you have the fans set to on the cards?
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post #18 of 46
Quote:
Originally Posted by ShortySmalls View Post
you do have sli enabled right? if u recently reinstalling gpu drivers its automaticly disabled. 2 GTX 560's is faster then a GTX 580 and mine has no problem keeping 80-100 fps in maffia 2



you will only notice at most like 5% drop in perforamce when u don't run a bridge at all as a PCI-E x16 2.0 has more then enough bandwith to handle the data as well that the sli bridge normaly transfers.
if you do not install the SLI bridge, your performance will suffer. and not by like 5%. it's actually required because without it, the performance will sucks a lot. trust me i'm runnning SLI right now.

OP: mafia 2 physX the clothes simulation is calculated on the CPU unless u dedicate a card to it. when u play mafia 2, go to nvidia control panel and dedicate the card that you do not have ur monitor plug into (most likely card 2) and it will disable SLI. even though SLI is disabled, you should get smoother frame rate i believe.
on all other non-physX games though, turn on SLI. btw you should be able to max crysis with at least 4x AA. because with my set up, at a higher resolution, i can max crysis with no AA.
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post #19 of 46
Quote:
Originally Posted by james8 View Post
if you do not install the SLI bridge, your performance will suffer. and not by like 5%. it's actually required because without it, the performance will sucks a lot. trust me i'm runnning SLI right now.

OP: mafia 2 physX the clothes simulation is calculated on the CPU unless u dedicate a card to it. when u play mafia 2, go to nvidia control panel and dedicate the card that you do not have ur monitor plug into (most likely card 2) and it will disable SLI. even though SLI is disabled, you should get smoother frame rate i believe.
on all other non-physX games though, turn on SLI. btw you should be able to max crysis with at least 4x AA. because with my set up, at a higher resolution, i can max crysis with no AA.
Sli stays on even if you have physx set to card two.
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post #20 of 46
no but if you DEDICATE card 2 to physX, sli turns off i believe. actually imma confirm that with my sli rig right now
yep, it even says sli disabled.
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