I installed a 256MM module in a system replacing some Crucial PC2100 running fairly conservitive settings and got a blue screen stop error on boot. Had to set mem timings to Normal to get it to work. The OCZ had problems approaching the performance levels of the Crucial memory let alone run at PC3000 levels. I think the only board this memory works well in is the Iwill XP-333. Idealy, good memory should allow you to run fast timings at a high frequency, the OCZ did not work for me in this regard on the Leadtek and MSI SiS boards.
The copper heat spreader looks nice though.