I am already looking for a HD4770, a 4870 or a 4870X2 at a decent price...my 2nd hand (just 45 Euro) HD3870 is already a good Milkyway cruncher (30k credits a day), these HD4xxxs ought to be even better. Might even consider a 5830 or 5850, if I can get one below 120 Euro's. These things outperform my only quad by a factor of at least 5.