CPU voltage wont stick

[Draydince]

I've been using an FX 8350 and Gigabyte GA-990fxa-UD3 rev: 1 motherboard as a temporary place holder since I sold my 4790k, and I'm having an issue with the voltage not sticking.

There is no static mode for this motherboard, you're only able to change the offset voltage by +/- .25 at a time.

I'm getting ready to sell it, and took my main cpu cooler off it to transfer to my future build, and put an old Deepcool Gammaxx 200 cpu cooler on it in the mean time. It's obviously not a great cooler by any means, but I would at least say it's a slight step up over the stock FX 8350 cooler which itself was "good enough" for stock settings.

The issue is the voltage spikes quite high, up to 1.35 (high, as in, high for stock speeds and a weaker cooler. I realize these can safely go higher) - i'm not overclocking at all. In fact, I've "underclocked" it a bit, disabling turbo boost leaving it at a static 4ghz. As a result of the higher voltage, the temps reach 60-70c while gaming and that's wayyy too hot for this chip. (I've already re-applied thermalpaste/reseated the cooler twice, the same temps occur each time)

I've tried lowering the voltage multiple times, .25, .50 etc and no matter what i set it to, it just completely ignores it.

I'm updated to the latest bios, have tried both with and without cool and quiet/power saving features enabled and disabled.

I realize this is an ancient board being AM3+ and all, but I'm hoping I'll get lucky and someone else may have had this issue/know a fix.