As a note, I don't the the OCZ would clear the fan. The heatsink might be too big, because the Dominator leaves only a bit of space itself. But then again, that OCZ with a seperate fan put on it would cool well too.
Ok your running a Intel CPU based on FSB so it doesnt really matter. The higher frequency RAM may give a little better performance but what you need is size, 2x2gig or 4x2gig. The huge cache on intels current CPUs negates a lot of the performance of the RAM. AMDs design and Intels next design wont use the FSB so they will depend more on RAM speed, ie: DDR3. Four gigs of DDR2 800 should be fine for you and be a bit cheaper then 1066 but there may be a little better performance with the faster RAM. I'm talking like 1-2% but it may be more, you should check some of the articles on Toms and other sites that compare this issue.
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Q6600 @ 3.5Ghz(1.5V), Zalman 9700 as5, ASUS P5E , Crossfire 2X 3870xt @ 862 core, 2402 mem , 8Gigs RAM (4x2) @ DDR2 800 4-4-4-12, Gigabyte Odin 800W PSU, 2X 250Gig WD HDD Raid0, Vista 64-bit, XClio case
