3DFX monster fusion
Riva tnt 2 ultra, X2
geforce 256, X2
Kyro 2, X2 (anyone remember these ?)
geforce 2 gtx?, X2
geforce 3 Ti somthing, X2
geforce 4 ti 4200, X4 had to send them all back to gainward for repairs.(anyone remember that mess?)
geforce 6600b gt, X4 (had to replace...