Core i3-530 / H55M-UD2H Overclocking...Strange Results

[wfj]

I got a H55M-UD2H today along with an i3-530 ($170 for both at Microcenter). What a great little CPU - clocks right up to 4.0GHz. I'm using a stock cooler off an i7-860 and I'm sure with a better heatsink and a little more voltage this CPU could run 4.2GHz easily. I did my stability testing in windows 7 and all is good. Geekbench in windows came out at about 4800 @ 2.93GHz and 6600 4GHz. I put everything back to default speeds and booted into SL. Geekbench score in SL came in at 5000. Cranked the CPU back up to 4.0GHz and Geekbench came in at 4850. $%#&! That just doesn't make any sense. All the advanced CPU features are enabled and not just set on auto. Since the results are dramatically different in Win7 this much be a specific problem to SL. FYI, I tried out Xbench and got about the same benchmark score running stock and oc'd to 4Ghz.

Any ideas?

 

[thepoi]

There's a power management bug that causes this, read here: viewtopic.php?p=23658#p23658 . You just need to flip some settings in your motherboard config to "Enabled", or similar.

 

[Burninator]

Additionally, changing the bootloader to one that recognizes your CPU could help!