Getting different Core Voltage readings

[djhixson88]

I'm trying to overclock my 4790k. Motherboard is an Msi z97 Gaming 5. Using a Corsair h100i GTX for the cooling. My problem is even if I use "override" mode for my voltage, it still reads different readings in either CPU Z, Intel Extreme Tuning Utility, and HWmonitor. CPU Z spikes to 1.272 volts under stress testing, Intel XTU always reads 1.2501, and HWmonitor reads I think the same as CPU Z but I'll have to double check. The only time I've gotten CPU Z to be within .001v of the 1.265v I sent in bios is if I set it to 1.28v with a negative offset of -.15v (override + offset) with just straight override mode the volts spike above what I ask it to go to in bios. With adaptive it spikes to 1.288 in CPU Z and still remains 1.25 in Intel Extreme. Clock speed is 4.7ghz with 1.265 volts applied. Just for the heck of it to see if my bios was being overridden by something else I set it to 1.200v with a 4.7ghz overclock and it didn't boot into windows. I use dynamic clock speeds (Intel speed step), and currently have C State on so it doesn't stay at full speed all the time. I had an extremely weird issue to where despite me putting everything back to auto as it came, it still would go to 4.7ghz and 1.288v which forced me to turn off turbo boost and then everything was back to normal. What app should I use to monitor my voltages so I can accurately dial in my overclock? I don't get many blue screens so I don't think I'm far off. Any suggestions would be appreciated. Sorry for the novel I just wanted to answer any potential questions first hand.

 

[HybridWolf]

In my opinion, those softwares are fine, they ue the temperature readings from places around the cpu, so they cant entirely be accurate. Usually i'd stick with realtemp or Coretemp, they are the most reliable, just average them out, they will give good results.

Hopefully this helps.

- TheHybridWolf

 

[mperna21]

I would agree witt what hybrid said.with my i5 7600k I get different readings no matter what hwmonitor I use. same with ram voltage. real temp would be what I would use for your cpu. Bios updates can sometimes fix this to but aren't worth the risk imo.