What is ITX? It is not a slim design. I would like to know what the chances of a sapphire hd6850 not being compatible with my PCI-E slot.
if the smaller 6850 wont fit then i cant see any video card worth buying fitting, for that matter I cannot see why it would not fit, what kind of case or what kind of premade computer do you have if it is a mid atx you should be fine if its a micro atx its a toss up, but there is no telling until you give us that info. Also the pcie 1.0 should not effect the card at all, also what are the rest of your system specs?