Question Good CPU Core Voltages for Ryzen 5800X ?

[wdolson]

I have a system running Win 10 with an Asus motherboard and a Ryzen 7 5800X. Over the last couple of weeks the system has become unstable. It sometimes freezes and sometimes spontaneously reboots. Three times it has BSODed.

Running the Asus system monitor program. I saw the CPU core voltage mostly bouncing between 1.35V and 0.95V, but I occasionally saw it dip down to 0.3V. I had a spare power supply so I replaced that last night. Initially monitoring the voltages I didn't see the core voltage drop below 0.7V, and again remain in the 0.95V to 1.35V range.

It had some more reboots. This afternoon I was running the utility again and saw another dip to 0.3V.

I know the core processor voltage on the Ryzen can vary, but 0.3V looks way too low to me. I think this might be an indication that the processor has a problem. I suppose it could also be the motherboard, but at this point I'm leaning towards the processor dying.

 

[CountMike]

I have a system running Win 10 with an Asus motherboard and a Ryzen 7 5800X. Over the last couple of weeks the system has become unstable. It sometimes freezes and sometimes spontaneously reboots. Three times it has BSODed.

Running the Asus system monitor program. I saw the CPU core voltage mostly bouncing between 1.35V and 0.95V, but I occasionally saw it dip down to 0.3V. I had a spare power supply so I replaced that last night. Initially monitoring the voltages I didn't see the core voltage drop below 0.7V, and again remain in the 0.95V to 1.35V range.

It had some more reboots. This afternoon I was running the utility again and saw another dip to 0.3V.

I know the core processor voltage on the Ryzen can vary, but 0.3V looks way too low to me. I think this might be an indication that the processor has a problem. I suppose it could also be the motherboard, but at this point I'm leaning towards the processor dying.

Yes. 0.3v is way low, I've seen it go to 0.881v but at 0.3 it should shut down so probably false reading as it wouldn't even register.
Are you looking at CPU Core Voltage (Sv2 TFN) ? (HwInfo)
Or are you looking in Ryzen Master ?

 

[wdolson]

Asus has a utility called AI Suite 3 that gives close to real time info on the voltages, fans, and temperatures. There is even a feature where you can graph one of the settings. I verified the voltage drops by graphing the CPU core voltage. The drops were brief, with the voltage normally in the acceptable range.

I see where HWINFO will give you the values, but you have to sit there and watch it like a hawk to see any glitches. The graph is easier to see them happen.

 

[CountMike]

Asus has a utility called AI Suite 3 that gives close to real time info on the voltages, fans, and temperatures. There is even a feature where you can graph one of the settings. I verified the voltage drops by graphing the CPU core voltage. The drops were brief, with the voltage normally in the acceptable range.

I see where HWINFO will give you the values, but you have to sit there and watch it like a hawk to see any glitches. The graph is easier to see them happen.

Hw Info also has graphs for every function. To catch fast "glitches" just adjust polling frequency.

AI Suite 3 is more of a problem than solution.

 

[wdolson]

AI Suite isn't great, but it found the problem. I replaced the CPU about 22 hours ago and the system has been up and steady ever since. The CPU core voltage is at 1.2V more of the time with the new processor. No apparent drops in voltage like I was seeing with the other processor.

If anyone wants to do destructive testing on a working but dodgy Ryzen, I've got one.