Ryzen core voltage

[stevemoorevale]

Hi.

A few months ago i built a pc for myself. I put in an Asus X470-F Gaming motherboard and a Ryzen 2700x 3.70ghz. Absolutely loving it so far. However, i have had some teething problems and whilst i do currently have a stable system that works fine for what i do, it would be nice to investigate those issues in more detail.

 

Once the system was running and i had a look at programs such cpuZ and of course ryzen master. I noticed it was boosting to well over 4ghz but in the process of doing this, the core voltage went up well over 1.4v and periodically past 1.5v. I researched this and it seems that running at near or over 1.5v consistently can shorten the life of the cpu and of course raise temperatures (if cooling is not adapted to cope). I think it should be around the 1.36v area.  I went into the BIOS and disabled the precision boost overdrive in the advanced tab so now i am not boosting over the base clock at all which keeps my voltages down. I also noticed with PBO switched on that ryzen master would show an EDC CPU reading of 99 or 100% of 140A consistently. It sits nicely at around 75% with my current setup-PBO off.

My question is, should i just switch on the PBO and let it run at those higher voltages or is the information I've read about this being harmful to the cpu over time correct? 

 

[pizapower]

Quote

 

Hi, I work for AMD.

The CPU is programmed to use these voltages automatically. We know it's safe, because we designed it that way. The CPU cannot and does not use voltages that are unsafe for the silicon.

The key thing that people forget in these cases is time and temperature. Running 1.4V or 1.5V here and there is not a big deal, because the CPU will eventually back down according to its pre-programmed model. Or if you have great cooling, that also offsets the thermal effect of voltage. In either case, you're seeing momentary blips of voltage that are offset by the hours per day your CPU is probably doing nothing at all--at a very low voltage.

The average vcore for Ryzen over time is around 1.25V (give or take).

tl;dr: leave the CPU alone, let it do its thing, don't worry. We designed the CPU to do this.

 

https://community.amd.com/thread/228343

Edited August 4, 2019 by Ryan_Vickers
Placed direct quote in quote box and added link so it is not mistaken for a first party comment

[stevemoorevale]

Thank you for your reply. That is good to know. I am only using the cooler that came with the cpu. But as you have said, because it is not at those high voltages and high temperatures all the time, it does not affect the cpu in a bad way.  What about that very high EDC CPU reading in ryzen master? it's always red and at 99 or 100% with PBO on. IS that a problem? 

[Wolly9102]

10 minutes ago, stevemoorevale said:

Thank you for your reply. That is good to know. I am only using the cooler that came with the cpu. But as you have said, because it is not at those high voltages and high temperatures all the time, it does not affect the cpu in a bad way.  What about that very high EDC CPU reading in ryzen master? it's always red and at 99 or 100% with PBO on. IS that a problem? 

Ryzen high core voltages is normal. I have it on both my 2700x and 2200u

[stevemoorevale]

9 minutes ago, Wolly9102 said:

Ryzen high core voltages is normal. I have it on both my 2700x and 2200u

Thank you.