When I over clocked my Quad 6600, I noticed that my biggest problem was the RAM.
I can OC to 3200, FSB of 400x8, RAM at 800 (1:1) but it will not run stable
Now, OC to 3400, FSB 378x9, RAM at 756, with 1.4 on CPU and 2.1 voltage on RAM and it's running fine, not lock ups, running ok
(I left voltage settings on bios as auto btw)
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