Ryzen 9 3900x Idle temp,voltage spikes

[OwnedOnLiquid]

What was meant to be a great PC experience has turned into a horrible 2500 euro pain in the ass.

 

PC Specification :

AMD Ryzen 9 3900x (wraith prism)

Aorus x570 Master : Bios version F10

Corsair 2x8gb vengeance 3600mhz

Corsair rm850x power supply

Aorus 2080 super Waterforce 8gb

1TB 970 evo plus m.2 Nvme SSD

1TB 860 evo SSD

 

I put my Pc together around 4 days ago. Updated the BIOS and then installed Windows 10 Pro 1909. Waited for Windows to finish the automatic downloads that it normally does on fresh install. While I'm installing the latest AMD chipset drivers I notice something, my CPU fan is ramping up and down like a brides nighty. I instantly dash for HWInfo to see what's happening.

 

My idle temp is around 34 degrees and then around every 10 seconds it will spike to anywhere between 44-60 and then begins to fall back down to 34.

My Idle Voltage jumps from 1.075v to 1.500v.

My frequency sticks at 3.8 GHZ.

This is with the Ryzen balanced plan set to on. Ryzen master obviously isn't telling me the correct temperature or my fan wouldn't be ramping up at idle.

 

Switching to Windows Power Saver :

Idle temps 33 degrees.

frequency 2.2ghz and jumps up when needed (running Cinebench r20) to 4.1 (still not anywhere near 4.6 btw)

and the idle Voltage is 0.950v and then only ever goes to 1.300v never hitting 1.5v

 

Now this is the weirdest part, If i enable Windows Power Saver and then reboot on getting to the log in screen for afew minutes I'm getting the Spiking I would see with Ryzen balanced. After afew mins it will calm down and go back to what normally happens in Windows Power saver.

 

If I disable Core performance boost in the BIOS I don't have any ramping issues but then it wont fall below or go above 3.8GHz.

So far my experience with AMD has not been good at all.

 

Please anyone have any suggestions?

 

[Jurrunio]

chipset driver version v1.11.22.0454?

[OwnedOnLiquid]

6 minutes ago, Jurrunio said:

chipset driver version v1.11.22.0454?

Yep ! I was hoping that that driver update would fix my issues but no

[Jurrunio]

36 minutes ago, OwnedOnLiquid said:

Yep ! I was hoping that that driver update would fix my issues but no

The voltage spike you see is because Ryzen's default power plan is stupid aggressive and ramps up to max speed when you just move the mouse around a bit. I think there are custom tuned options (1usmus power plan) you could try.

 

Not hitting max boost is a common thing tho, it requires the CPU to run even colder. Your mileage may vary, but I've seen samples that only touch its max boost on a single core at 0C with stock settings, and of course it's being cooled by dry ice at that point.

[OwnedOnLiquid]

11 minutes ago, Jurrunio said:

The voltage spike you see is because Ryzen's default power plan is stupid aggressive and ramps up to max speed when you just move the mouse around a bit. I think there are custom tuned options (1usmus power plan) you could try.

 

Not hitting max boost is a common thing tho, it requires the CPU to run even colder. Your mileage may vary, but I've seen samples that only touch its max boost on a single core at 0C with stock settings, and of course it's being cooled by dry ice at that point.

Thanks for getting back to me,

 

I think that is what ill try next with 1usmus power plan.

I do get that its not common but to me it teeters on being false advertising. they might aswell put 5ghz on the box as less than 1% actually will have the hardware to get there.

Another stupid thing is that its 500 pound CPU and im getting screwed by AMD's own Crappy power plans and it not being optimized

[Jurrunio]

1 minute ago, OwnedOnLiquid said:

I do get that its not common but to me it teeters on being false advertising. they might aswell put 5ghz on the box as less than 1% actually will have the hardware to get there.

Indeed, they might as well learn from Nvidia and say "3GHz base 3.6GHz boost" or something like that, while the actual CPU violates it all the time "because there's power and voltage headroom lol"

 

2 minutes ago, OwnedOnLiquid said:

and im getting screwed by AMD's own Crappy power plans and it not being optimized

optimization is not their strong suit... I mean when 2nd gen Ryzen finally stabled everything 3rd gen isnt far from being announced.

[OwnedOnLiquid]

10 minutes ago, Jurrunio said:

Indeed, they might as well learn from Nvidia and say "3GHz base 3.6GHz boost" or something like that, while the actual CPU violates it all the time "because there's power and voltage headroom lol"

 

optimization is not their strong suit... I mean when 2nd gen Ryzen finally stabled everything 3rd gen isnt far from being announced.

Any ideas why the spikes are happening on startup with Power Saver on ? seems odd that it stop spiking after a while.

[Jurrunio]

1 hour ago, OwnedOnLiquid said:

Any ideas why the spikes are happening on startup with Power Saver on ? seems odd that it stop spiking after a while.

because power saver doesnt kick in until a while later? just guessing

[Lord Tyrion]

An old thread but thought I'd share my experience.

 

Switching to Windows balanced plan helped somewhat in smoothing out temp spikes, but the real solution was to reduce the CPU voltage offset by -100. This lowered the idle temp down to low 30's and really smoothed out the temps with non gaming range pretty static between low 30's and 40c. Also as has been reported on other forums; AMD senses the lowered temperature and actually throttles up the frequency - which sounds counterintuitive - but works! 

 

Edited March 25, 2020 by Lord Tyrion