I'm buying a system based on an Athlon X2 , but I can't decide whether to go DDR (socket 939) or DDR2 (socket AM2). These are the particular memory sticks I'm considering, and my calculations of the CAS latency for each:
Corsair XMS 1024MB (512MB X 2) PC3200 DDR 400Mhz 2-3-3-6
Clock=5.0ns
CAS=10.0ns
Corsair XMS 1024MB (512MB X 2) PC5400 DDR2 675Mhz 4-4-4-12
Clock=2.96ns
CAS=11.84ns
They cost about the same (the DDR2 sticks being slightly cheaper). Which one would you go for?
Also, I have many more motherboards options if I go 939.
Corsair XMS 1024MB (512MB X 2) PC3200 DDR 400Mhz 2-3-3-6
Clock=5.0ns
CAS=10.0ns
Corsair XMS 1024MB (512MB X 2) PC5400 DDR2 675Mhz 4-4-4-12
Clock=2.96ns
CAS=11.84ns
They cost about the same (the DDR2 sticks being slightly cheaper). Which one would you go for?
Also, I have many more motherboards options if I go 939.