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AMD Ryzen High Vcore Voltage

bulldog147

bulldog147

bulldog147

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I think AMD should sort out all AMD on 3000, 4000, 5000 as the Vcore voltage are very badly too high at 1.47v to 1.48v on stock. Why?

CPU lifespan are shorter if vcore over 1.45v and temp over 80c.

My AMD Ryzen 3700x stock speed 3.6GHz to 4.4GHz was varies vcore madness 1.42v to 1.48v and temp at 75-85c on cinebench R23

I manual set vcore at 1.25v and all cores ratios at 40x and leave it at 4GHz with temp never go over 70c on cinebench R23.
 
That's just how they're designed to operate with the high voltage for light and single core loads.

By using a fixed voltage and limiting the CPU to 4ghz you are sacrificing SC performance so maybe try a -0.05~0.1 Undervolt offset instead as that way you keep the 4.4 SC boost while also using less voltage.
 
I wouldn’t worry about it. They’ve clearly been designed to handle it - they only ever use that kind of voltage when high speed single cores are operating.
 
Can't remember the last time I heard of a cpu dying without an obvious external factor. Or it being dead out of the box

Sounds like a waste of time to undervolt because you're scared stock voltage will kill it.
 
There are a lot of accounts of 3000 series requiring more voltage over time to reach the same clocks. AMD may be overcooking voltages a tad and it’s a genuine concern but not the end of the world IMO.

 
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That’s just how ryzen CPU and to large extent Intel CPU works these days. They have a single core boost algorithm which gets things over 5GHz in a short burst, that needs a bit more volts.

but under all core loads, the ryzen don’t usually go over 1.3V
 
Joxeon said:
That's just how they're designed to operate with the high voltage for light and single core loads.

By using a fixed voltage and limiting the CPU to 4ghz you are sacrificing SC performance so maybe try a -0.05~0.1 Undervolt offset instead as that way you keep the 4.4 SC boost while also using less voltage.
Click to expand...

how to do this on Asus Tuf Gaming Plus B550 bios setting? I never used to Asus board as I been using my Gigabyte board for over 12 years
 
If you are worried about temps then lower the PPT in PBO setting.

but chips running 70c is no issues these days. And it is considered cool for modern CPUs.

there is no difference in ASUS or Gigabyte board implementation of the boost algorithm as that is determined by CPU. The feature is called Precision Boost override or PBO in your bios.

to get into the full detail how PBO works is far too long. You are better off going to YouTube and search for PBO and PBO2 or curve optimiser to get some background information. PBO2 or curve optimiser is only available to Zen3 CPUs
 
bulldog147 said:
how to do this on Asus Tuf Gaming Plus B550 bios setting? I never used to Asus board as I been using my Gigabyte board for over 12 years
Click to expand...
You will have to change core voltage from override to offset, minus then add in 0.05 etc
 
Last edited:
bulldog147 said:
I think AMD should sort out all AMD on 3000, 4000, 5000 as the Vcore voltage are very badly too high at 1.47v to 1.48v on stock. Why?

CPU lifespan are shorter if vcore over 1.45v and temp over 80c.

My AMD Ryzen 3700x stock speed 3.6GHz to 4.4GHz was varies vcore madness 1.42v to 1.48v and temp at 75-85c on cinebench R23

I manual set vcore at 1.25v and all cores ratios at 40x and leave it at 4GHz with temp never go over 70c on cinebench R23.
Click to expand...

High voltage at idle will still not be drawing much cuurent which is why you will see voltages drop at load as the current goes up. This s what they are designed to do and there is nothing wrong with that. I do not now why you would limit your CPU when it is running as specified
 
Out of the box about 4.85Ghz all core at about 1.4v in games. about 4.65Ghz at 1.325v in heavy all core loads like Cinebench.

Ryzen 5800X.

With some tweaking i have had it running at 5.1Ghz all core in games at about 1.47v, 4.8Ghz 1.375v in Cinebench.

This is exactly how they are designed to operate, in lighter loads like Games the CPU knows it has some headroom to move into because it isn't pulling as many Amps / Volts as it can handle, so it will "Boost" its self, in high stress loads it backs off a bit.

It can run up to 1.5v in light loads, somewhere between 1.3 and 1.4v in heavier loads. Completely normal, its doing exactly what its designed to to do. :)
 
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