sigh... it's not the price. it's not even the very likely scenario of microstuttering. it's x4 in the x16+x4 cfx mode. how the hell would the second card participate in the so called 'GTX 580 class performance' if it's bandwidth gets cut in half?
It's confused what CFX is and is not capable of and SLI for that matter but in this context I suppose he is limited to 4x bandwidth in the second lane and from my XP this condition is a no go it just makes for a choppy performance and holds back the true potential however Microstuttering is not a big problem at all like people make it out to be and is easily mitigated they don't understand the particulars only the hype surrounding it.