by the way, what is folding?...i know its something nvidia cards can help do but i dont understand what its for...can any one explain please, and i think im going to use the gtx260 for now, overclock it to a 275 standard and let the 4890 collect dust for now. but, how far can i overclock the 4890?...what could i compare it to on the nvidia side when overclocked..thanks again for all the help