FX 8350 - Vcore voltage doesn't seem right!

ydoumus · Feb 2, 2017

This is scary. I wanted to go higher than 4.2 GHz with my OC so I decided to turn off C1E and C&Q (mobo listed in OCCT screen). Then... over 1,8 VCore voltage.

Previously with the "power consumption" features on, I was getting 1,1v with random peaks to 1.8v during CPU stress-testing. I am still rather surprised by it even going to 1.8v without blowing up.

Now the real question is: is this even possible?! I have not touched VCore voltages (set at +0.000) and turbo boost is off. LLC is set at Regular, although it doesn't matter now, I think.

PS. other voltages don't seem right either.

Gam3r01 · Feb 2, 2017

What are your voltages in the BIOS?
I personally dont know exactly how accurate OCCT is, but those dont seem accurate.

dextermat · Feb 2, 2017

Hi
It is a bad reading because the chip would fry.
Test with hwmonitor

ydoumus · Feb 2, 2017

Gam3r01 :

It appears that it's not accurate at all. Decided to quickly give CPU-Z a look during the stress-test (which crashes on core 7, lol). 1.380 VCore, which seems more accurate than over 1.8.

I guess 1.38 might not be enough for 4.4 GHz OC for my processor, although some lucky people have had success with 4.5 at stock VCore.

Gam3r01 · Feb 2, 2017

I would say that is a more accurate reading, though I still recommend checking the BIOS for the 3.3,5, and 12vs.

ydoumus · Feb 2, 2017

Gam3r01 :

3.27 on the 3.3v rail, 11.9 on the 12v rail. SpeedFan confirms those readings.

Anywhoo, this was just a scarejump for me. OCCT sure doesn't give out good readings.

Gam3r01 · Feb 2, 2017

Yeah, BIOS and CPU-Z are some of the only super reliable ways about it

ydoumus · Feb 2, 2017

Indeed. Well, problem solved. Stable OC @ 4.4 established. 41*C at peak temps. Go liquid cooling!

Shaun o · Feb 2, 2017

To be quiet honest if the core voltage was anywhere near 1.8v ydoumus.
You would of seriously over volted an FX cpu without much doubt and rendered it completely dead.

The maximum most boards will allow you to set the Vcore of the cpu is about 1.6v total.

With most people being able to run an FX 8350 cpu at around 1.4v when overclocked to 4.5 or 4.6 Ghz.

There are a number of things that can prevent a FX 8350 cpu reaching a target speed of 4.5Ghz speed.
It is not just down to the cpu it`s self sometimes, it can be down to the fact of what chip set the motherboard is using in the AMD line of custom chips.

For example a 990FX board in a lot of cases performs better at overclocking the FX 8350 yielding better overclocking frequency's.

In cases like this it does not matter how much voltage you try to give to the Vcore of the cpu it`s self.
The chip set of the motherboard is just not able or has enough overclocking scope to hit a frequency of 4.5Ghz.

Likewise memory can be another reason.
And also how the cpu is cooled and by what type or brand of cpu cooler.

If you list the brand of motherboard you have and the Motherboard chip set model numbers it will tell you roughly if the motherboard is the cause as to why you cannot overclock the FX cpu by much.

On average with a good motherboard, with a FX 990X chip set on board and good cooling most FX 8350 cpu`s at around 1.4v core setting will overclock about 600Mhz over the stock frequency providing you also have a good enough cpu air cooler, or water loop fitted.

ydoumus · Feb 2, 2017

Shaun o :

To be quiet honest if the core voltage was anywhere near 1.8v ydoumus.
You would of seriously over volted an FX cpu without much doubt and rendered it completely dead.

The maximum most boards will allow you to set the Vcore of the cpu is about 1.6v total.

With most people being able to run an FX 8350 cpu at around 1.4v when overclocked to 4.5 or 4.6 Ghz.

There are a number of things that can prevent a FX 8350 cpu reaching a target speed of 4.5Ghz speed.
It is not just down to the cpu it`s self sometimes, it can be down to the fact of what chip set the motherboard is using in the AMD line of custom chips.

For example a 990FX board in a lot of cases performs better at overclocking the FX 8350 yielding better overclocking frequency's.

In cases like this it does not matter how much voltage you try to give to the Vcore of the cpu it`s self.
The chip set of the motherboard is just not able or has enough overclocking scope to hit a frequency of 4.5Ghz.

Likewise memory can be another reason.
And also how the cpu is cooled and by what type or brand of cpu cooler.

If you list the brand of motherboard you have and the Motherboard chip set model numbers it will tell you roughly if the motherboard is the cause as to why you cannot overclock the FX cpu by much.

On average with a good motherboard, with a FX 990X chip set on board and good cooling most FX 8350 cpu`s at around 1.4v core setting will overclock about 600Mhz over the stock frequency providing you also have a good enough cpu air cooler, or water loop fitted.

Mobo was listed in the OCCT screenshot. I am running closed circuit liquid cooling with temps never exceeding 41*C at 4,4 GHz clock. OC is very stable at 1.4v VCore; no crashes after intensive gaming.

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FX 8350 - Vcore voltage doesn't seem right!

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Shaun o

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