http://www.tomshardware.com/reviews/gef ... 122-9.html
Found these VGA power supplies which look pretty cool
http://www.thinkcomputers.org/index.php ... ews&id=832
and allow you to do this


Run 3 x GX2s ie 6 GPUs - Apparantly good for folding as they can use multiple GPUs not in SLi.
Saw this interesting article on nvidia about running 2nd graphics cards as physx cards instead of SLI. Basically any old nvidia gfx higher than a geforce 8 can do this apparently
http://www.slizone.com/object/sli_cuda_learn.html