[SOLVED] Z87-G45 - CPU Core Voltage + 0.030 V

[username68]

Hi all,

today I decided to overclock my Intel i7 4770K. I managed to get 4.2GHz by setting the CPU Core Voltage to 1.270V.

However, CPU-Z and HWMonitor are showing me 1.300V.

I checked out a few settings and I found out, that those programs always show 0.030V more than the setting I saved in the UEFI of my MSI Z87-G45?

For example, if I set the core voltage to 1.250V, CPU-Z and HWMonitor are showing 1.280V.

Can someone explain this?

 

[tennis2]

It's pretty common for BIOS and software to read different vcore. It's also no guarantee that the mobo is right unless you measure with a multimeter. Either way, not a big deal if it's only .03V difference. Enjoy

 

[qataqo]

hello my friend, dont go 1,27 vcore for 24/7, try to be below 1,25 vcore. you seem to have a bad cpu if u need that much vcore for only 4,2.

 

[username68]

It's pretty common for BIOS and software to read different vcore. It's also no guarantee that the mobo is right unless you measure with a multimeter. Either way, not a big deal if it's only .03V difference. Enjoy

The thing is that even the BIOS shows +0.032V (1.312V) even though I set it to 1.280V. Why is this? This can't be normal.

The guy in this video got the same Motherboard like me, sets his Core Voltage to 1.140 and just got a slight difference of +0.001V in CPU-Z under load (1.141).

Here's a picture of my BIOS:

 

[tennis2]

Instead of setting a constant voltage (that applies to all frequencies) I set a voltage offset.

I set a small voltage offset to disable the "auto" voltage from the mobo so my 3570K does 4.1GHz @ stock voltage.

 

[qataqo]

once you get your CPU stable you will have fun with it for years, my 4770k currently stable at 4,2 GHZ with 1,175 vcore (69° in Prime95), i only OC for WoW. at this point there is no AMD CPU that might bring me a big difference in WoW and the 9600k which is the best option for WoW gamers is not a great deal atm.