Pinmod for Phenom X4 9950BE? (Undervolt/underclock)

[ziddey]

Awesome. Disabling CnQ allows fid/vid adjustment in hex now. Thanks so much!

I'm seeing that each fid adjustment is 0.5x, so assuming that fid=0 would mean 13-5=8x (stock was 0a).
Time to play with vid.

You're a hero

Dropping vid by 1 increases vcore by 0.02v. Going the other direction, it doesn't seem to scale linearly. I'm imagining due to droop maybe? Either way, got it at 1.20vcore in the bios now. Time to play!

Assumedly, vid should be in 0.0125v increments. 1.175vid is translating to around 1.200vcore idle and 1.216vcore load

This CPU is showing itself to be a real runt. I'm told it was prebuilt with the 9950be, a 125w tdp part. The psu is only 250w, and the system calls for no higher than 105w tdp IIRC. Supposedly, it worked without issue in the past. Either way, it looks like there's really no undervolting headroom at higher fids.

Ok, going to have to settle with 2.1ghz 1.125vid. That's "stock" for a 9450e, except with 2ghz ht. It's a pig with vcore afterwards and becomes hard to tell whether I'm hitting instability from insufficient voltage or psu overload. Hopefully, they'll be happy the pc works again, even at the cost of 500mhz.

Thanks for taking the time to mod this bios!