Why is my 5800X idle power consumption so high?

1 : Anonymous2021/10/16 13:50 ID: q9ceb4
Why is my 5800X idle power consumption so high?
2 : Anonymous2021/10/16 15:27 ID: hgvaquq

Even when you think you’re idle, windows and applications are doing a lot. Typically, high average power is 60W and high average temp is 55-60C during these “idle” cases with enough things running. If you kill everything, it should fall a lot lower but it won’t be realistic or useful but it is possible to go below 15W and 30C or so. So what you’re seeing looks normal to me actually.

Realistically what’s helped me without much performance loss is switching to “Best Energy Savings” in the power slider. I get down to 30C with 30W with a lot of things open and running. I haven’t seen noticeable performance losses with benchmarks either. Give that a go and see if it helps.

ID: hgw86to

Besides moving the powe

slider tot he left, there is also "DDR Power Down" option in BIOS which reduces the idle power by single-digits. It might not be ideal for gaming performance and OC, so I guess check with benchmarks if it doesn't decrease performance.

Another (and cumulative) option is reducing memory speed by disabling XMP and going to speed that your memory does at stock DDR4 voltage (1.2 V) instead of the raised voltage usually applied by XMP.

In AMD CBS -> NBIO settings -> SMU settings, there might be an "EfficiencyModeEn" help option that might perhaps help (switch to enabled from auto) a bit too.

The most effective/easiest way is to move the slider to left (you have to have balanced scheme selected for it to appear). The memory options have more compromises but they mostly work globally and reduce your power in general.

ID: hgwncdj

Good suggestions for further idle power reduction, but rightfully as you said, this will reduce performance. DDR Power Down is typically used in severs for energy efficiency but this can increase memory latency by up to 20% from what I’ve measured. And EfficiencyModeEn is also for meeting server power efficiency specifications so I’m really surprised it’s exposed on some consumer boards. This one drastically slows down the Core frequency controller’s response time so your single thread performance will be quite impacted but it will be working quite “efficiently”. Is EfficiencyModeEn actually exposed on your board? If so, what board do you have?

3 : Anonymous2021/10/16 15:39 ID: hgvcakl

amd has fairly high idle power usage, it's the IO chiplet.

It can be a little bit lowered by selecting curve optimizer in bios and setting a negative voltage offset.

Not sure how low it can go, my 5600X has about 70 watt idle from the wall (with RTX3080)

4 : Anonymous2021/10/16 14:35 ID: hgv480g

Cpu is active, not idle at that wattage. This is no config problem, but bloatware problem. Get hold of "autoruns" from microsoft and disable some background apps to clear out that problem.

Pro tip: use 3rd party fan control software like Argus monitor. And use openrgb for lighting control, get rid of all the mobo bloatware.

Then you'll be chillin like me and my 8 watt idle 5900x. And it's 8watt idle, on balanced power mode, with power slider at max performance, the proper win10 way to set max mode on these cpus.

5 : Anonymous2021/10/16 13:53 ID: hguzdtn

What are the pbo in the motherboard setting set up to?

Mine idles the same as you, 30 w. So it's normal.

ID: hgvdji6

Some people say it's normal and then some say they can get it down to under 15W

ID: hgw8e14

My 3900x gets as low as 16w for the package power.

6 : Anonymous2021/10/16 20:24 ID: hgwfxps

Is your memory overclocked? Running above 3200 disables power management features for memory and it runs at full speed and the if too all the time, this alone uses about 15-20w. Running spec memory not overclocked an a cpu will idle much closer to 10w

7 : Anonymous2021/10/16 14:29 ID: hgv3i3q

maybe apps open in the background causing boost? try updating the BIOS? ¯_(ツ)_/¯

anyways even if you fix it the best you will be able to reasonably manage is 15W. This is done by setting the power slider in energy settings to "Best Energy Savings" and nothing open in the background.

I wouldnt use CTR. Everyone says it is snake oil, and with curve optimizer and PBO i get close to 4.7ghz on all cores in demanding workloads. GL

8 : Anonymous2021/10/16 17:44 ID: hgvtomw

if you're seeing anything over 40C... you're not idling.

You've got some background tasks running you clearly aren't aware of that are constantly forcing you out of idle.

9 : Anonymous2021/10/16 14:59 ID: hgv77bh

Measure at the wall. By running hwinfo alone, the consumption increases by ~10W on my system because the CPU cannot idle anymore. Granted, I have it set to 500ms cycles and a few graphs open, so the difference could be smaller on your system, but still it is not "idle" when the program is doing its calculations all the time.
My whole system uses 55-58W at a real idle state and 65W with hwinfo open, showing 25-30W at the line you highlighted. This is with Crosshair VI (X370), 3700X and a few SSD drives.

10 : Anonymous2021/10/16 15:52 ID: hgve1ob

That number includes the 15W I/O die (northbridge)

ID: hgvpwb6

Thanks I think this might explain why PPT is 15W higher than Core+SoC. So basically on Intel systems the CPU sensors don't include northbridge power and Ryzen has the northbridge built into the CPU?

ID: hgvyk3b

Intel also has northbridge included in the CPU. Northbridge has been part of the CPU for a long while now. I believe they call it "uncore".

ID: hgvymsm

Yes and that's exactly why PPT is where it is stock for most AMD chips.

11 : Anonymous2021/10/16 17:06 ID: hgvo982

By idle, do you mean how many % of cpu usage on taskmanager?

On hwinfo look for c6state, which are about core. For a total low power, look for packagec6 state

12 : Anonymous2021/10/16 21:48 ID: hgwreag

Use negative voltage offset on cores and also on the SoC. I was able to max my SoC undervolt to 0.2v without any issue.

7.5W is now the SoC chip average use. Before it was around 12.5w average draw at idle.

It's stable for me I've been running it months but your milage may vary. This might not work if you've got 4 RAM slots populated.

Edit: just checked and your SoC draw is super low on the same CPU as me!?! Maybe RAM speed difference?

13 : Anonymous2021/10/16 22:05 ID: hgwtl4n

AMD's just suck at idle power, it's kind of ridiculous. On my intel boards, the entire CPU package can idle at 5-6W. On my 5900x lowest I can go is maybe 35-38W in Power Saver power plan, which heavily downclocks the CPU.

14 : Anonymous2021/10/16 23:39 ID: hgx5stj

the package power includes soc,IF & core power

35w seems about correct since soc & IF don't really have lower power states with XMP

your cores are 8w idle, you could bring this down but not worth it, getting around 2w is possible with tweaking the power plan

for example, not xmp 3200mem will have better idle on soc/IF but you'll still be around 25w for package power

There's some bios settings that will get you to about 0.2w for cores at idle but you'll run into idle shutdowns/reboots depending on how sensitive your PSU is during very low load.

15 : Anonymous2021/10/16 17:21 ID: hgvqehq

cos amd did a dumb design

ID: hgwamoo

pretty smart to produce only 1 chip that can be anything from a 4 core with dual channel memory to a 64 core processor with eight channel memory. as it is with everything, there are compromises.

if you want monolithic, they have 5700G/5600G also, which has better idle characteristics by 4W if you care that much about 4W which will be lost to PSU inefficiencies anyway.

ID: hgwcq4m

great design cant even use usb and pcie 4 at the same time

16 : Anonymous2021/10/16 13:52 ID: hguz5wq

I'm using the cheapo B550 MSI Gaming Edge Wifi Motherboard and my idle power ridiculous. Never seen it go below 25W I wonder why is this the case. I basically toggled every bios option and enabled all power saving features to no avail. Is this because I'm using a cheap Mobo?

Am using CTR2.1but temps are even worse when I'm not using the profiles

ID: hgvqh8h

not its because youre using amd

they talk about how amd is efficient but ignore the fact on idle it is power hungry as hell


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