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Sli gtx 670 working better than single one ?!

Last response: in Overclocking
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November 2, 2012 6:05:24 AM

Hello everyone

I just got my hands on 2nd grafic but something is wrong. I get good score at benchmark and furmark but in games its total bulls..t. Here is one ex Skyrim everything on ultra running about 60 fps with a single card, while with sli activated it runs few fps lower *Frustrating*.
Same goes for BF3 ...

My specs...

.Corsair TX 750W V2 /80+ Bronze

.MK Gigabyte GA-Z77X-UD3H Socket 1155,
Z77, ATX

.CPU Core i5 3570K 3,4Ghz

.Crucial Ballistix Sport 1600MHz 2x4GB

.Crucial SSD 128 GB m4

.2x EVGA GF GTX 670 Super OC 4GB *

.HD1TB Seagate SATA 6Gb/s 64MB

.SAmsung 120 hz monitor 1920x1080

And yes i have tried new drivers and old ones >S.
Both cards works good as a single one , tested.
November 3, 2012 6:32:05 AM

Hello everyone again !

After some tests i run.One of the card got 2100 score heaven benchmark, but the one got 2800. In additon to that one card is hotter than the other like 5 temp or 8. I will try to do some more test...
Bf3 on ultra settings: highest fps is 130+, the lowest can be around 65 60. So sli works in Bf3 for sure.But I thought i wouldnt go down to 90 fps with sli which is very disappointing.
a c 109 U Graphics card
a c 150 K Overclocking
November 3, 2012 6:51:41 AM

Drivers?

BTW you can't even see 90 FPS....
a b U Graphics card
a b K Overclocking
November 3, 2012 6:54:00 AM

disable your vsync..

Dual graphics card solution (CF/SLI) with vsync enable, will show worse performance than a single card..
November 4, 2012 8:46:06 AM

Yup vsync is off. I got the latest drivers WHQ.
Anyway i think its my cpu that might bottleneck so i will try to over clock it to 4 ghz.
Will be back with resuts later!

Thank you for your reply's people.
November 4, 2012 8:46:20 AM

Yup vsync is off. I got the latest drivers WHQ.
Anyway i think its my cpu that might bottleneck so i will try to over clock it to 4 ghz.
Will be back with resuts later!

Thank you for your reply's people.
November 4, 2012 8:50:05 AM

Yup vsync is off. I got the latest drivers WHQ.
Anyway i think its my cpu that might bottleneck so i will try to over clock it to 4 ghz.
Will be back with resuts later!

Thank you for your reply's people.
a b K Overclocking
November 6, 2012 4:09:40 AM

Try disabling hyper threading in the bios on one of your tests. lost of people find this to fix cpu issues in BF3
November 6, 2012 2:35:31 PM

Hello again!
I didnt clock my cpu yet. But something else happened when i came home from my trip, i got black screen when i started up windows.
I was afraid that one of my cards are defected, so i put out each one but they worked perfectly as a single one.
I made clean install of drivers, rebooted pc, after that i put back my 2nd card in slot.
Well now i feel kinda stupid but that fixed all the fps issues in bf3. now i drop to 85=90 fps when i see some hardcore action other wise its 110-120 +++ fps.

Problem solved!

Thank you people for all reply's. Im off to play some bf3 >D
!