Question What is the max safe vcore voltage on a fx 8120?

DSzymborski

Titan
Moderator
It depends on the silicon lottery and the rest of your hardware.

AMD says not to go over 1.475, but people have gone above 1.55, though cooling an AM3+ CPU at that level and certainly past that becomes a real challenge. If there's OS instability, then it's moot anyway.
 

Karadjgne

Titan
Ambassador
Safe? As low as possible. FX cpus have a Tdie of 62°C. That's not measurable by conventional means, you Need to use AMD Overdrive to use Thermal Margins. While that gives no Exact temp reading, it does give a clue as to how much thermal headroom is left with the current load.

Pushing voltage too high will trash that Thermal Margin as it's an algorithm made up of core voltages, load, socket temps, vrm outputs etc. The difference between 1.4v and 1.5v could easily be a Thermal Margin of Zero instead of 20, which means you are throttling the cpu and dangerously close to damage to the cores.
 

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