Not many considering you really want a GTX 970 minimum to keep framerate high enough - crucial to reduce motion sickness. Those new MSI GTX 970 4Gb nvidia cards

Not many considering you really want a GTX 970 minimum to keep framerate high enough - crucial to reduce motion sickness. Those new MSI GTX 970 4Gb nvidia cards look nice. I'd put the $400 down for one if I didn't just buy a coffee machine. BTW, these graphics cards are the first I've seen which spin down to a stop for normal computing, the fans only kick in for 3d applications, great stuff. PC gaming and graphics is more amazing than ever.