I got 256mb of that last week, and it's running at fastest timings with fsb/memory running 144/144. I ran it for awhile yesterday at slightly safer timings (2-3-3-5, command rate @ 2T) at 133/166 with no problem - I didn't try max settings at that fsb. I haven't had to change from default voltage. I've seen claims that most of it runs 333 at fastest timings, so if you're not planning to run it over 333, it should make you happy.