Very good news if thats the HD4850, it does however show, just how much of a beast the GTX 280 is, if it can supposedly score over twice that amount on Crysis..

The HD4870 is what 20% faster, so your deffo not going to get playable performance @ 1920 x 1200 on that card, if the HD4870x2 scales exceptionally well, it might just get near GTX 280 in Crysis..

Both companies are coming out of this very well imo, Nvidia looks to be giving you an absolute beast of a single card and Ati is giving good bang for buck ( option I will be choosing )...