Originally Posted by linbetwin
I reverted back to auto freqs with a manual vcore of 1.20, down from 1.25 for my 4.9 OC. But my VID stays unchanged. Can you guys check your VID on Coffee Lake? Maybe monitoring tools do not read voltages correctly on CFL (I've got the latest versions on HWMonitor, HWiNFO and CPU-Z) or maybe this is just what the CPU expects, not a real voltage.
VID is the voltage Intel sets that your chip needs to run stable, and that's really it
gotta remember that voltage can fluctuate, especially on lower end boards, and even on higher end ones (thats what we like to use LLC for), so Intel needs to use some kind of value that's safe
and obviously every chip is different in what voltage it needs for certain frequencies
depending on the version of HWiNFO the VID from kaby was quite wrong, sometimes by a few volts
coffee lake being "new" I wouldn't be surprised if readings are off
vcore is the actual important value
bit dated, but I dont think anythng has changed
Edited by peter2k - 10/22/17 at 8:47am
Is a lower VID better?
Generally yes, lower VID CPUs overclock more because they tend to come from better batches that need less vcore for higher speeds. The lower vcore causes lower temperatures, which again allow for higher speeds. However, there are always exceptions. Some Q6600’s with a VID of 1.10v (So called golden batches) found themselves unable to overclock as far as a CPU with a VID of 1.28750v. The VID was better but the overclock was worse. Some chips are just not as good in overclocking as others.