9800GX2 quad SLI setup failure help and advise needed

Hello all , I have been getting terrible performance with my SLI setup . I recently read http://www.guru3d.com/article/far-cr...mance-review/5 and the performance is so dissapointing ..even at Crysis I get very low FPS something around 20..Does quad SLI ever work ? Why did NVIDIA claim that almost 6 months ago this was the fastest most powerfull graphic card setup ever http://www.slizone.com/object/slizone_quadsli.html . I almost payed 1000 euros for these cards and it feels like such a rip off. For example at Crysis when I enable quad SLi for the NVIDIA control panel , I can hear both of the cards fans go on and then after a minute the display driver stops responding ..and crashes . I have tried that witht a variety of drivers for the very latest one till the 1st one . Same goes with Farcry 2..What would be the performance of a GTX 280 SLI setup compared to this? What is so wrong with quad SLI..I need to point out that I play most games with just 1 card enbled cause SLI keeps failing and the driver crashes I did reinstall Vista as well....

Nothing wrong with my Quad SLI.
You arent giving us much info here , what are your system specs?

wouldn't it be CPU hungry not ram??? That's why it has it's own ram.

Yes a single GX2 is still fastest card for crysis @ the moment but that doesn't say much.

I don't think Far Cry 2 supports SLI yet, I mean theres like 1-2 difference between 2 of my 280s. So Quad sli is out of the quesiton.

If Far cry 2 can use 1 GX2 consider yourself lucky. If its true and it doesn't support SLI ur looking at those 2 9800 GX2 performing about as strong as a 8800 GTS 512 ( actually slightly lower) Thats if it doesn't support SLI, which from my benchmarks it doesn't.