so i can't put
MSI N560GTX-Ti Twin Frozr II 2GD5/OC
SAPPHIRE HD 6950 TOXIC 2GB GDDR5
EVGA GeForce GTS 450 1GB GDDR5
no. if you read the previous posts you would see that it was recommended you get the gtx570 anyway though. 6950+gts450 wont work without some tweaking as nvidia disables physx when a card from a different vendor is detected. in short if you are worried about it just get the 570. it is the best solution for multiple reasons.