SuperTalent PC2-6400 DDR2 Memory
 

A very fast and at the same time
impressive overclocker for the DDR2-6400 category. According to our
tests, the memory reached 480MHz with voltage up to 2.25V. The
overclocking potentials are superb with this memory. You can either
select low CL3 latency at DDR2 667 or select default timings of 4-4-3-8
and test your system's stability.

http://www.cdrinfo.com/Sections/Revi...rticleId=19308