Buffalo Firestix PC2-6400 review
 

The FireStix had no issues surpassing PC2-8000 frequencies at timings much tighter than the SPD defaults. At their default timings, they could be overclocked by a very impressive 42.5 percent or 340MHz. There are not many PC2-6400 5-5-5 kits able to run at super tight 3-3-3 timings, either.

Our reviewer picked up 2GB package for $115CAN and ran it through the gauntlet, and the results are crazy impressive.

http://icrontic.com/articles/buffalo_firestix_pc2_6400