motherboard cpu voltage vs HWiNFO cpu voltage

[Navek]

I've been trying to get a stable overclock on an fx 8320 @4.2ghz and would like to know which shows the voltage more accurately the motherboard bios or HWiNFO. I have the cpu voltage set to 1.46 in the bios but HWiNFO reads Core VID: 1.363v and Vcore: 1.332v. Stress testing with prime95 too by the way

Temps are CORE: 40c
Socket 60c

 

[burnhamjs]

The CPU Voltage (Vcore) in BIOS is a setting, but what HWInfo is reading is what it actually is. (For a true reading you would need to measure with on the motherboard with a multi-meter - but that is not really necessary).

If you are setting 1.46V in BIOS and seeing a Vcore of 1.332V in HWInfo at IDLE. That is a 0.128 Vdrop. Seems like a lot to me, but that is not something you can adjust - it is what it is. Basically it's a mobo inaccuracy and you just adjust it to get the Vcore you need (as reported in HWInfo).

However, if you are reading 1.332V vcore in HFInfo during prime95 testing, then it suggests a high Vdroop which could be helped by applying some LLC.

What does HWInfo report for Vcore at idle?

You could also check Vcore in CPU-Z just to verify what you are seeing in HWInfo.

 

[Navek]

The CPU Voltage (Vcore) in BIOS is a setting, but what HWInfo is reading is what it actually is. (For a true reading you would need to measure with on the motherboard with a multi-meter - but that is not really necessary).

If you are setting 1.46V in BIOS and seeing a Vcore of 1.332V in HWInfo at IDLE. That is a 0.128 Vdrop. Seems like a lot to me, but that is not something you can adjust - it is what it is. Basically it's a mobo inaccuracy and you just adjust it to get the Vcore you need (as reported in HWInfo).

However, if you are reading 1.332V vcore in HFInfo during prime95 testing, then it suggests a high Vdroop which could be helped by applying some LLC.

What does HWInfo report for Vcore at idle?

You could also check Vcore in CPU-Z just to verify what you are seeing in HWInfo.

Idle, my core voltage goes up to 1.428v - 1.440v and I'm also not sure how LLC works I have enabled it a few times before only to see my temps shoot way up past the safe limits. My LLC options are Auto, Enabled, and Disabled
(mobo m5a97 r2.0)

 

[burnhamjs]

Idle, my core voltage goes up to 1.428v - 1.440v and I'm also not sure how LLC works I have enabled it a few times before only to see my temps shoot way up past the safe limits. My LLC options are Auto, Enabled, and Disabled

So that means you have a high Vdroop. You have Vcore set to 1.46 in BIOS, and at idle HFinfo shows 1.440v at idle. However, when you apply a load Vcore pulls down to 1.332V. This is either caused by an inadequate power supply or you need to apply LLC.

When you enable LLC what does you Vcore show in HFInfo at idle and under load (when running prime95). Ideally you want Vcore to stay close to what you set in BIOS at idle and under load which LLC helps you do. But LLC can also cause Vboost where you get MORE voltage then you request in BIOS - so keep an eye this as well.

If I were you, I would bring you multiplier back to 40 (for a 4.0G freq), set Vcore in BIOS to 1.350V, enable LLC, and the monitor Vcore in HWInfo at idle and while running prime95. Hopefully you will see it staying around 1.350 (maybe 1.340V). That would be good.

If you can get Vcore to remain with 0.01V of the BIOS setting, then I would run prime95 and see how things go. If stable, I would increase the multiplier to 41 (4.1G) , check your Vcore at idle, then start prime95 and watch stability. If this goes well increase your multiplier to 42. Keep doing this monitoring vcore at idle and under test, while keeping an eye on your temps.