The first time Neoseeker reviewed Crucial's DDR2 it was certainly stable, but not very good on the overclock.  This second run of Crucial's DDR2 is a little more forgiving, reaching speeds above 1000MHz, when the timings are loosened up.

"We've published a review of Crucial's 2GB (2 x 1GB) PC2-6400 low latency memory where we also push it

to see how much overhead these mature DDR2 sticks might have. Previously we took a look at some other

Crucial low latency DDR2 and found they had very limited headroom, but this newer set showed a much

more satisfying amount of overclocking capability."

Here are some more Memory articles from around the web:

  
Memory

• High Speed DDR2:

  Buffalo and Crucial Deliver 1000+ @ AnandTech

• Corsair Twin2X2048-8500C5 2GB DDR2 Review @ Virtual-Hideout
• Mushkin XP2-6400 2GB Dual

  Channel Kit at Byte Sized Reviews

• Super

  Talent T800UX2GC4 @ Overclockers Online

• Crucial Ballistix

  PC2-5300 DDR2-667 2GB Memory Kit Review @ PCstats.com