Best to borrow one bigger psu to try, or disabling your gpu OC and some HDDs and try again.

dont end up like me, upgraded a few weeks old SF600 to a SF750 which helps with absolutely nothing. (So i ended up with upgrading my 2080 to 3080 because i dont want to waste the PSU)

This post has been edited by Bonchi: Mar 12 2021, 09:45 PM

After reading all these posts about the idle voltage, just checked my 3700x with ryzen master, it is around 0.2 - 0.5v during idle.



This post has been edited by Ebony & Ivory: Mar 13 2021, 01:20 AM

It seems to be affecting Zen 3 more than Zen 2. JohnLai isn't the only one having high idle voltage.

It depends on what is running on the background as well. We have doing nothing idle or playing music in the background idle or YouTube/video playing in the background idle.

Doing nothing idle with no running apps, definitely temps and voltage will be lower as the ccx will enter sleep state like yours. If that’s the case, might as well just shut down the PC.

But the other 2 then will be a different case. for my case, I have a music player running and the voltage will be locked to 1.3 to 1.4v... I think john also. anything light at the background will affect the sleep state such as rgb software, monitoring tools, afterburner, i torrent etc.


Meanwhile this is my 10400F temps when youtube is running. room temp is 28C~ no aircond lolol.

This post has been edited by Bonchi: Mar 13 2021, 02:33 AM

where to choose? my power plans no AMD specific, using 5600x here.

Install the board chipset drivers then the ryzen power plan should be there in the windows power setting for zen2. But yours is zen3 so I guess you won’t see it and you should use the balanced power plan.

But no matter what, it wont really help much. This is just the behavior or ryzen cpu so just live with it. the 40-60C numbers might not look nice when just doing light browsing or watching a video, but it wont destroy your cpu.. it’ll just make your room slightly warmer and fans slightly louder

This post has been edited by Bonchi: Mar 13 2021, 02:21 AM

Nay, for now, I just use eco mode and OC the GPU. Seem to work. Lack of fund to purchase stuff until year end.

Nice result there. It is exactly the same result with my 3950x when using Ryzenmaster.
Can't say the same for my 5950x.

Indeed, I posted the issue at reddit, but most people wrote, "ignore the high voltage, the cpu core is properly gated off when entering CC6".
But the temperature tells another story.

Both 3950x and 5950x systems chassis side are open and not closed. (In the same room)
3950x = deepcool gammaxx 400 pro (dual fan)
5950x = coolermaster 212 hyper turbo (dual fan)

3950x = temp idle at 43'C
5950x = temp idle at 52'C


Can verify this. 3950x will max the CPU Core Voltage SVI2 TFN reading and stay at there constantly until the music playback is paused. Just starting qbittorrent without any active torrent and let it there also causes the voltage reading to stay at max.

Uncertain on 5950x since the CCV SVI TFN seems to stuck at 1.45v

That’s the answer I got and they all say don’t trust hwmonitor and only look at ryzen master.... but ryzen master also shows the same thing lolol.

You may want to check your c-state and cool n quiet settings in the bios. these will affect the idle states as well. however if they’re all set correctly then I guess just accept the cpu runs hot at idle. I had this problem since I bought the 3600 in 2019 and nothing have changed after so many agesa and chipset updates.

My 5900X with 29C ambient. Nothing running on the background.

watch yours while seeing my 2700X idle at 1.4v LOL I gave up long ago trying to get Intel level sort of low power idle with this chip.

Yours did drop down to 0.9v so i guess it is working as it should despite the temps is still 40C... maybe cuz of the core count. my 3600 with fewer cores lowest was 35C so i guess it is in that range.

as long as it drops to .9V thats fine. This is specified in the power plans. You could tune that down but you'd gain nothing as cores go to sleep anyways and a lower voltage would just decrease performance without any further benefits.

Make sure you run the windows default plan for zen3, got bios properly set up and got no tool controlling power plans and/or voltages like some infamous motherboard manufacturers tools love doing.

This post has been edited by nrw: Mar 13 2021, 11:32 AM

Depends on what you have installed and what service are running at background, My 3700x always 1.4v, i tried to disable PBO but it does not help,
i enabled more aggressive one anyway lol

I can only tell my PC is idle once the casing fans become quiet = CPU voltage = ~1v

Currently running with PBO 10x scale, every other thing else is auto, mobo = B350 Mortar Arctic


This post has been edited by 1024kbps: Mar 13 2021, 12:31 PM

Youtube now only use VP9/AV1, older GPU without VP9 hardware assisted GPU decoding are GGed, cpu does all the work and toasty warm~~~

the only fix is force youtube streaming in AVC/H264 https://addons.mozilla.org/en-US/firefox/addon/h264ify/
no more noisy fan noise accompany you after that lol

i have departed from ryzen and using intel now haha but i could check this out on the rigs i build for friends. Altho they are the kind who dont give a damn eventho their cpu is idling at 60C... as long as their pc works then it's fine.

youtube preserve h264 format for older android device, else VP9 will choke older android hardware to death, become batttery draining monster.
most end user does not really care, i know them every well.

h264 are already matured and optimized, even without gpu decoding it will not be power hog.

power plan at high performance mode?

Balance, Stock cooler, average cap-ayam/avf atx case with 2 120mm front intake+ 1 120mm side intake and 1 120mm top exhaust and 1 90mm rear exhaust.

That's me. A simple scrolling of forum thread will spike the CPU temp to 55C, and the temp fluctuate 45-57C without doing anything. That's also because I let the 120mm fan spin at 800rpm below 60C. As long as I can use it and don't need to clean the filter that often, I don't care about idle temp anymore.

JohnLai I forgot to ask, what version is your HWInfo? 6.42 and before has a bug that it polls the CPU more than it should (even if you set a very long delay in the settings) and that actually doesn't allow the CPU to go into idle. This seems to be fixed with the latest 7.00 release.