this post was submitted on 07 Sep 2025
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Idle power is the only thing they are good at, but for a homeserver a used older cpu is good enough.
Was that even true for comparable CPU's? I feel this was only for their N100's etc.
Nah all the am4 cpus have abysmal idle power, the am5 got a little better as far as i know but the infinity fabric was a nightmare for the idle power.
Well I concede, I guess there was one metric they were better at. Doing absolutely nothing.
What about the monolithic socs? Idle power on my 5825u is better than my i5-1135g7. My i7-8550u is in between.
The problem is just the infinity fabric that connects the chiplets. Afaik this is because its clock runs at a consstant speed and its made on a way bigger node. The monolithic parts dont have that problem.
My AM4 box draws 0 watts on idle. I turn it off when I don't use it
Like turn off the PSU switch? Computers can draw more than you think when they're "off", but the PSU switch should shut out the whole thing.
Ahh yes idle=not using computer and using computer=100% cpu usage. There is no such thing as "reading a pdf document" or "surfing the web".
Browsing the web is not idle
Enlighten me! When is a cpu idleing?
When it's not doing anything
If the system is powered the cpu is always doing something. Idle doesnt mean that your pc is off it just means no "real" load. Modern cpus are so powerfull that browsing the web is no real cpu load. It may be a few % difference than just the os itself but windows backround tasks will propably make more impakt on the cpu load.
My CPU boosts to 4Ghz at 1.5V loading a website
That's hardly nothing. When it's not doing anything it goes back to 500Mhz at less than 1V
The CPU is not doing anything when the system is turned on! I don't run Windows spyware so it only does something when it's told
Yea exactly, you load a page your cpu will boost for 1% of the time you spend on that page while loading it and then idle at a few Mhz for your os. I dont get the "it doesnt idle". With a slim linux system it propably idles a lot more than with win11.
So clearly it will be using much more power when it's loading the site. These days as you scroll down the page it will infinitely load more stuff. Can't call that idle
Dude go measure your cpu usage while scrolling a site i can watch a high res video with cpu usage under 10% measuring the difference between no active program and only the os is nearly impossible. Why dont you go and log your cpu power for doing this vs only your os running and report back? If your cpu usage keeps being above say 25% while loading a normal site without funky stuff going on, something is weird. Also keep in mind that even if one of your cores is boosting for a second you cpu usage as a whole over time is still low and low power draw at low clocks will benefit you.
The CPU usage is 10%, but the energy usage is NOT 6.5 watts (with 65 watts being 100% usage)
That's not how CPU usage works
First energy usage is not watts, second you can look via tools like hwinfo or others how much power your cpu draws. Where did i say it would draw 6.5w at 10%?
Just checked the laptop first:
It's 9.8w on idle (including laptop screen and RAM and everything) and 16.8w scrolling a website
That's 50% more power usage. Over 20 seconds up from 196 J to 316 J