Hardware Logic posted a review on the Crucial Ballistix PC2-6400 Memory

Far be it for us as a review site to pick favorites, but one thing we can do is point out that Crucial's offerings have performed exceptionally well on our test benches in the past. Today's sample marks the third Ballistix product we've looked at in the past year, and fourth Crucial memory kit overall. Most recently we put their 10th Anniversary DDR2-667 kit under scrutiny and were blown away by the overclocking headroom. In fact, our only real gripe was we felt that it could (and should) have been marketed as a faster kit, so when we received Crucial's Ballistix DDR2-800 with respectable timings (4-4-4-12), we were eager to throw our gauntlet of benchmarks at 'em and see what kind of overclocking performance we could squeeze out of a higher clocked kit.

Crucial Ballistix PC2-6400 Memory Review