Hello Mattio,

My first AMD CPU was a 386SX-25, soldered onto the mainboard. It was in my possesion until very recently, when my girlfriend urged me to throw at least something away in order to get space to stack more computer junk. I also have a AMD 486DX-5 133, still functioning in an IBM PS/2 model 95, and an AMD K6III-400 in a super-7 DFI mobo. I do most of my crunching on Athlon XPs, Pentium-4s which people donate me for free in order to get rid of them (one of them with a HD4770), an Intel C2Q8200 with a nVidia GTX260 and a Athlon64 3200 with a AGP HD3850. To prevent a wallet-killing power bill I do not have all my 20+ systems running at the same time....in fact most of them are set up as museum relics.
At present you get the most out of an Ati/AMD GPU by letting it run MilkyWay, DNETC or Collatz, while nVidia gives you stellar PrimeGrid performance