hiya metro it seem 500fsb plus on the extreme is not as feasible as on p35 boards, i have also tried 3 all stop at around 4600mhz, 500fsb stable but over 511 ,like 512-513 fsb very flaky, the only thing i found that helped to bott at 500fsb was disabling transaction booster and setting the relax level to 3 or 4 , then once in windows using memset to lower the performance level again, i think the only way over it is a new bios revision, i have benched 05,03,aquamark at 4603 which was 512 fsb on the e8400 and 3d06 at 4575 mhz (509fsb)
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