Quote Originally Posted by EtherWind View Post
First time poster, thanks for having me. Yes, I have been following all the posts for the past few months, and its great to see lots of smart folks in one place.

Anywho, I had my i920 on a UD5 overclocked to 3.8 for a number of months and was running that for normal 24x7 operations, until I did an absolutely boneheaded move of using @BIOS to update the BIOS back at v4. stupid me.

Now, unless I leave the BIOS at "Optimized Defaults" I simply cannot get an overclock on my rig without my machine entering a reboot loop and defaulting itself automatically back to stock settings. I have been waiting for the magic BIOS update to cure my troubles... and have been using QFlash for every flash since (I'm now at 6a), but still to no avail. My rig simply wont accept any even minor bump to any setting without entering a reboot loop and resetting to default settings.

I just reseated my chip on the weekend just in case as previous posters described bent pins (I didn't have any), but reseating it didn't make any difference. Does anyone have any ideas? (aside from ever using @BIOS ever again)?
Can you list your other settings, as Steve said, hard to imagine @bios did anything especially if you reflashed afterwards.

For example are you turning turbo off, if you were using F3 bios before going to F4, F6a etc, as F3 will need less vcore at same mhz because turbo is treated differently. And if not turning turbo off, you should need more vcore in all bioses other than F3, since F3 turbo only supports light loads in turbo versus F4 etc is true 21 multi.

But my guess is you are doing something different, or you are using auto and auto value may be different.