Bought a 3800x the other day and tested with PBO got up to 4.215ish under Prime 95. Anyways figured I would test with the highest "safe" voltage of 1.325v and got the below. Bios confirms 1.325v but yet everything else says this. Notice the wattage. WTF!? Btw using a Asus Hero x470 with latest bios... HUGE bug or what!? I can't go over without crashing so the volts may be correct especially with the max temp being so low as well!?
![[H]ard|Forum](/styles/hardforum/xenforo/logo_dark.png){kind=logo}
3800x PBO off weird voltage and results
- Thread starter Tazman2
- Start date
No you don't understand. Using PBO I was seeing up to 1.45ish on low core usage and then dropped to 1.3xv ish as expected under load. Now even at idle low usage I see 1.1volts PERIOD. Under load it drops to what you see above... I have it set @ 1.325 in the bios...
One of the feedback items from AMD regarding odd voltages reported in Windows is that some monitoring programs are polling the CPU in such a way that it causes the CPU to behave differently than normal. Similarly, running multiple monitoring tools simultaneously will create a race condition and generate erroneous results. The recommendation was to use either CPU-Z or the official AMD tool.
So...with 3 monitoring programs open, it can be safely assumed the shown numbers are garbage.
So...with 3 monitoring programs open, it can be safely assumed the shown numbers are garbage.
gerardfraser
[H]ard|Gawd
- Joined
- Feb 23, 2009
- Messages
- 1,366
I can repeat this anomaly by overclocking on Motherboard BIOS or with Ryzen Master only slight difference in temperatures .
Motherboard all core overclock when all cores kick in CPU voltage around 1.06v.
Still hit 80c Intel Burn Test,tested Cinbench and memory CL16 3600Mhz.
Ryzen 5 3600X All Core 4300Mhz Ryzen Master CPU Voltage 1.3v when all cores kick in.
Still hit 80c Intel Burn Test,tested Cinbench and memory CL16 3600Mhz.
Motherboard all core overclock when all cores kick in CPU voltage around 1.06v.
Still hit 80c Intel Burn Test,tested Cinbench and memory CL16 3600Mhz.
Ryzen 5 3600X All Core 4300Mhz Ryzen Master CPU Voltage 1.3v when all cores kick in.
Still hit 80c Intel Burn Test,tested Cinbench and memory CL16 3600Mhz.
In my case, not only was the voltage super high (using CPU-Z as recommended) but I didn't boost any higher than with manually setting my voltage. Beyond that the CPU ran super hot. I'm not buying it.
Running a negative voltage offset in my case will cause a lower CB score, presumably because it boosts lower. It's not a huge change from stock though. But I'm on x370 and it's not getting any BIOS updates right now. It may be better on x570. It doesn't bother me much though.