PC Processors

[kythlyn]

Hi all! Since a picture is worth a thousand words, please look at this: 

As you can see, about half the cores in my Ryzen 5900X are running at very low frequencies, and the computer is noticeably slower than usual. This issue happens on boot up, and can be resolved by rebooting, but every time I boot up the computer there is a chance of the issue happening again. I'd estimate I encounter this issue about 25% of the time I turn on my computer. 

My computer's power plan is on High Performance:

Ryzen Master is on Auto OC, though the issue also occurs on Default. 

Thanks in advance for any suggestions!

[kythlyn]

Just experienced this: 

[Gwillakers]

Get your minimum processor state off 100%     !!!

This is a Windows power plan problem.  Happened to me on 2 out of 4 builds.

Set it manually or choose another plan.  

Let the poor thing rest...  

It's getting killed with voltage.

[Gwillakers]

Just in case, the proper setting for a minimum processor state should be 5, 10 or 15%

Not 100%  

Most processors only run maybe 1% of the time. and are idle 99% (it is at idle where they cool down)

But running it at 100% doesn't let it downshift.  It is like whipping a horse, go faster you dumb animal !

Faster faster.   But then when you want it to run... it is all hot and out of gas.

Running 100% should only be done for people searching for world records with Liquid nitrogen builds.

[kythlyn]

Thanks for alerting me to that issue about the minimum processor state; I have changed the setting down to 15%! 

Not sure whether or not that could affect the subject issue. I'll let you know the next time it occurs, and if it doesn't I'll come back and mark the solution. In the meantime, I'd still appreciate additional suggestions! Has anyone else encountered this issue? A quick google search resulted in multiple people having this issue across several AMD processors, but I wasn't able to find a concrete solution. 

[Gwillakers]

I agree with you, that might not be the solution to the problem at hand.

But with that setting, it would upset the whole apple cart.

Continue to monitor.  Be aware that sometimes immediately after a boot (for about 2 minutes) you might find that the system is holding all cores to higher frequencies.  Then they settle down after 2 minutes.   I know yours seems to be the opposite effect.

Good Luck

[kythlyn]

This happens too... notice how the base frequency is 80 instead of near 100? This can also be resolved with a reboot. I assume it is a related issue. 

[ryzen_type_r]

I'd say there's something very wrong with your motherboard (or CPU, possibly) for the bus clock and CPU multipliers to change by itself like that.  Bus clock should always boot up at 100Mhz unless you've changed it manually.  Same goes for the multipliers, they should be consistent from boot to boot. 

You didn't say which mobo you had, but update to the latest BIOS.  If you're running the latest version already, clear CMOS and reflash the BIOS.

[kythlyn]

Mobo is B550-E

[Gwillakers]

Before jumping to conclusions.   I would question the Core Temp reading.

Try to verify it with something else.   Like Ryzen Master, or HWInfo64.

I once pulled my hair out trying to get a Threadripper to see my sticks in quad channel.   The high bandwidth was the reason I bought the Threadripper system in the first place.  I tried everything, varying the sticks around in different slots.   Change of speeds.   Change of Timings. Again varying the slots. After 3 days I put my treasured ECC away, went to best buy and bought some Corsair Vengence Non-ECC.  It too was showing up as Dual Channel.   I wanted to see the bandwidth, so I loaded up AIDA.   Lo and Behold, AIDA showed the Corsair in Quad Channel.   Moral: Don't always trust your software.   In this case an update to CPU-Z fixed the errant showing of Dual Channel.   (I went back to the Kingston ECC)

[edan0]

I faced the same problem and was able to resolve it by slowing the FCLK on my motherboard to 1600MHz while still maintaining the my memory speed at 3600MHz.