I am using SSD and 12g of ram. I'm not sure if i am doing something wrong but i don't see any faster load times, which is why i went with the ssd over raptors. BUT on my old rig when i went from 4 gigs of ram to 8, it made a ton of difference in my FPS. This new one runs great, but not noticeably better than my other pc.

Old PC specs:X38MB, QX6850, 280GTX, 8gigs DDR3, non raid 7200rpm 1TB HD, Vista64 Ultimate
New PC: X58MB, Core i7 920, 2x280gtx, 12gigs DDR3, 128mb SSD, Vista64 Ultimate

( why 2 bad ass PCs? Im crazy like that! ohh..and I plan to 10box later on. And I play other games and demand that they ROCK!)