Vcore fluctuations - 8700k

[mjohnsto]

Hi All,

I've been running my new 8700k, Asus Prime Z370-A w/ a Cryorig H7 cooler for a week now.

I intend on running this at stock specs and not overclocking. I noticed some fluctuations in my vcore values and I'm curious if this is normal, should I even be concerned about this?

I idle at 0.688v, spike at 1.408v according to CPU-Z & HWiNFO. The spikes rarely occur, and they are just for a split second. Thermals don't appear to be an issue; I idle around 29C and around 45C when gaming, during Cinebench it goes up to around 78C.

I've tinkered a bit in the bios but I get sort of similar results regardless of what I set. I started off with all default settings, now i'm trying different things. Right now I'm running cpu core voltage in adaptive mode, "additional turbo mode cpu voltage" set to 1.22, and a -0.05 offset. Multicore enhancement is disabled. Windows power plan is set to balanced.

Am I completely overthinking this? I have no intention of overclocking at this time, I just want my new CPU to run safe.

 

[mdd1963]

V-core will fluctuate instantaneously with clock speed, potentially at least 20 times per second with varying load, and, most monitoring programs only catch a tiny fraction of the voltages utilized, but, not uncommon to see th range you see in normal tasks.

Cinebench is stressful, so those temps of 78C max are quite decent if near 4.7 GHz.

If your XMP mode is on and MCE mode is auto/ enabled in BIOS , does HWMonitor occasionally show all 6 cores at 4.7 GHz?

Temps of 45-60C during gaming are quite low, IMO.....

 

[mjohnsto]

MCE is disabled in Bios. HwMonitor shows all 6 cores at 4500GHz most of the time.

I'd rather not make a ton of changes in the bios, my intent was always to just use it right out of the box at default settings.

Think I'm safe just running as is? Over the last 3 hours or so, vcore has spiked to 1.408v like 4 or 5 times, for a split second. Lower spikes at 1.360v every minute or so.