Recently my motherboard broke so I need a replacement. I have found some good ones on Scan.co.uk, I'm sure I want to go for one of the P45 models. However each P45 has a tick to say it supports Crossfire but a cross to say it does not support SLI. If it supports crossfire and has two PCI-E x16's why cant it do SLI too? Is this a chipset limitation? Also is the nVidia GeForce 8800GTS G92 512MB PCI-E x16 2.0 capable, I know the socket is backwards compatible but I was wondering if my 8800GTS is 2.0 "ready" will it perform better, a bit like going from agp 2x or 4x to 8x. Thanks for any replies.