Nothing you said is untrue but the implied interpreration is a bit off.rcas wrote:For RAM I would suggest a CL2 RAM, either OCZ / Patriot / Mushkin / Crucial / Kingston . I would also suggest DDR 1 memory, not DDR2, since DDR2 memories are CL4 and CL5.
CAS is measured in clock cycles. After a little browsing on a hardware dealer site it looks like 400 MHz, CAS 2 and 533 MHz, CAS 2.5 / 667 MHz, CAS 4 was the best DDR1 and DDR2 could offer respectively. Let's do the math:
DDR1, 400 MHz, CAS 2: 1/400 * 2 * 10^3 = 5 ns
DDR2, 533 MHz, CAS 2.5: 1/533 * 2.5 * 10^3 = 4.7 ns
DDR2, 667 MHz, CAS 4: 1/667 * 4 * 10^3 = 6 ns
So, if you jugde by CAS alone a good DDR2 comes out as the winner.
Of course, in the end, you'll want DDR1 to use with your AMD system