RightMark Read
The G.SKILL PC6400 read performance at stock speeds was where we would expect it, and it turned in a decent performance when overclocked to its maximum stable speed at 975MHz with 4-4-4-12 timing.

RightMark Write
No suprises here. At stock speeds, the G.SKILL PC6400 did as one would expect; and it turned in decent numbers when overclocked.
Do not let the much more expensive modules better overclocked results deter you from considering it.
