Ok, so iv just spotted a dual core skt939 opteron in stock here - http://www.cpucityshop.co.uk/product_info.php?products_id=889 and a whole range of them in stock in germany...but the price tag on them is massive! What im wondering is what makes them so special that theyre worth all that extra £££? Take the 165 from the link above - 200mhz slower stock speeds than my x2 3800+, albeit with 2x 1mb cache rather than 2x512kb...but its over £100 more than my x2... is there something about these I should know??