Originally Posted by ZealotKi11er
If you use more then 3GB and the fact that DDR2-677 is very slow yes. You can get faster DDR3 then 1333 like 1600 for nut much more.
Originally Posted by SamuelL421
Well the first part is ture, assuming he needs more memory than he's got
But the second part is way off, the differences in memory speed all come from speed vs timings - cheap ddr3 1600 (or just poorly configured) with high latency timings can still be slower than high-end ddr2 (even ddr2 667, assuming its got low latency).
a bit dated, but this page explains the idea...