I recently bought two PNY xlr8 performance edition 660 TI graphics cards, they both work well but when I SLI them I get less performance than if I was to only run one card...
For example here is my Heaven score with 1 card: http://puu.sh/20LcY/adbed125f2, score of 2857, and here is my score with SLI: http://puu.sh/25sPC/5348bbaa18, score of 2339... Note at the bottom of each the first one actually lists my graphics card and the second picture says "Microsoft Basic Render..." Vsync is off, also.
Here is my setup
Asus M4N75TD SLI ready motherboard
AND Phenom II x6 1055T CPU
2x PNY 660 TI 2gb graphics cards in SLI...
8gb ram @ 1333mhz
750w Corsair CX750 SLI ready PSU
I believe I set it up right because when I rebooted my computer the nvidia software said that my system was SLI ready with a notification bubble and said to click it to enable it, I did here is http://puu.sh/25t9K/71e91bbc58 (this may be the problem if I have the DVI cables in the wrong spot). But I've read around saying that the monitor dvi's should be connected to the top card, which it is. I have dual monitors, so I don't know if that plays into anything...?
Please help me out, great thanks!
For example here is my Heaven score with 1 card: http://puu.sh/20LcY/adbed125f2, score of 2857, and here is my score with SLI: http://puu.sh/25sPC/5348bbaa18, score of 2339... Note at the bottom of each the first one actually lists my graphics card and the second picture says "Microsoft Basic Render..." Vsync is off, also.
Here is my setup
Asus M4N75TD SLI ready motherboard
AND Phenom II x6 1055T CPU
2x PNY 660 TI 2gb graphics cards in SLI...
8gb ram @ 1333mhz
750w Corsair CX750 SLI ready PSU
I believe I set it up right because when I rebooted my computer the nvidia software said that my system was SLI ready with a notification bubble and said to click it to enable it, I did here is http://puu.sh/25t9K/71e91bbc58 (this may be the problem if I have the DVI cables in the wrong spot). But I've read around saying that the monitor dvi's should be connected to the top card, which it is. I have dual monitors, so I don't know if that plays into anything...?
Please help me out, great thanks!