I'd found that Wiki entry but it doesn't help me decide whether the motherboard is safe to use. I thought the VRs for the CPU were those above and to the left of the CPU socket. This seems to be just an isolated VR near the Fan connectors so I was sort of hoping someone would know if they were related to them rather than the CPU or RAM.
At the moment there's a cheap Xeon E5504 in it but if this VR affects vcore I don't want to put a 990X in and destroy it.
I've run Prime95 with the Xeon both at stock and overclocked and the vcore seems to be stable.
Due to imperfect AC-DC conversion by PSU, line noise, thermal changes, load changes.... voltage can fluctuate. However, processors need a very steady voltage since this is what they operate against. i.e. If a stray +.5v voltage occurred, it might change a 0 value to 1 value inside the CPU.
That is probably a DRAM VM. Check the Asus's site for compatibility...
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