I guess it varies with the wu. but my guess is average about 100mb per thread. so 8 thread=800mb....

here's a Q6600@3420mhz w/4gb ram in vista64 right now on 2 2665wu's...


Project : 2665
Core : SMP Gromacs
Frames : 100
Credit : 1920


-- X4-smp1-Vista-Q6600-3420mhz-6.22R3 --

Min. Time / Frame : 15mn 32s - 1779.91 ppd
Avg. Time / Frame : 15mn 40s - 1764.77 ppd
Cur. Time / Frame : 15mn 42s - 1761.02 ppd
R3F. Time / Frame : 15mn 42s - 1761.02 ppd
Eff. Time / Frame : 17mn 01s - 1624.76 ppd


-- X4-smp2-Vista-Q6600-3420mhz-6.22R3 --

Min. Time / Frame : 15mn 50s - 1746.19 ppd
Avg. Time / Frame : 15mn 57s - 1733.42 ppd
Cur. Time / Frame : 16mn 02s - 1724.41 ppd
R3F. Time / Frame : 16mn 02s - 1724.41 ppd
Eff. Time / Frame : 17mn 22s - 1592.02 ppd