The X2 6000 is a dual core 3.0 GHZ and runs 125W. I got 2gb PC6400/800 MHZ.. I know that high density ram is very very finiky and 90% of the mobo's do not support it.. the mobo has 4 DDR2 slots, so I could go up to 4gb in low density ram... I got a upgraded cooler for it, that was $14 extra. if it does not cool enough for me, I'll get a Thermatalke R1... and I will be running 3 case fans controlled by a digital Xion fan controler ( multi color LCD readout, alarms, i will have cooling protection )..