Hi im having a problem with my xpertvision 8800gt sonic graphics card, i am trying to run Sli with a M3N-HT Deluxe motherboard, for some reason its not using my secong card, the board supports 2 x16 lanes, when i run 3dmark with 1 8800gt my score is about 11000 and when i use two i get the exact same score, also in cod4 theres no increase in fps when in Sli mode.
If i run 1 card i get average 40 to 50 fps on big servers, if i enable Sli get the same fps no inrease in game play at all. I have tried 4 different drivers, i used the one that came with the cd, the 175.19, the 177.79 and the 177.83 with same results
Im running Windows XP, im thinking it may have to do with my power supply here are my specs:

Amd x2 6000+ clocked at 3.4mhz
4 gig ocz gold edition gamer ram 4-5-5-15 850mhz
500 gig Samsung spin point hard drive sata 2
1 dvd/cd sony Optrica 7200 drive
1 floppy hard drive
Zalman 9700 led cpu heatsink
2 120mm case fans
1 80mm case fan
2 Xpertvision 8800gt sonic graphics cards

Here is my power supply:
http://www.overclockers.co.uk/show [...] X2.2%20PSU

Output Parameter:
+5v=2A-36A
+12v1=1A-20A
+12v2=+1A-18A
-12v=0A-0.8A
+5vSb=0A-2.5A
+3.3v=0.3A-30A

The cpu says its Ati certfied but not Sli certfied? my system showes secong card is there and in nvidia control pannel i have enabled Sli in the options and tried all the options in 3d settings but none of them work

Im kinda hoping that it is my power supply and not nothing to do with the cards, i have also tested each card seperately and both score the same on 3dmark 06 and i get the same fps on cod4, so the cards seem fine, maybe the Sli connector?

Anyhelp would be much appericated

Hiper's are crap, but they do come in a nice Tupperware biccy box . I like Corsair's 620HX myself.

LOl do u think it will be the power supply as i have read i need more amps on my 12v rails for sli

I have seen quite a few SLI systems refuse to enable the second card until their '600W' PSU's were replaced with a 'proper' one.