Which memory combo best?

[Fawks]

Helping a friend build a system. Been reading a lot about memory and CAS latency. What's better with NF7-S v2 and Athlon 2500+? Looking for best price/performance combo.

2 sticks 256MB PC2700 cas 2.5
2 sticks 256MB PC2700 cas 2
2 sticks 256MB PC3200 cas 2.5 or 3

Thanks in advance

 

[zayened]

the lower the CAS latency the better most 2.5 chips will run @2.