IsnAM1 is hard to get howdays, at best you can get the soldered mobile variants Like AMD E1-XX00 and AMD E2-XX00... Gigabyte and Biostar have those.
The other option is an J4105 or J4005... that whould be easier to get.
If you are looking something with a bit more punch and more mainstream, the G3930 and I5-7400 are low power as well. Try to avoid AM4 and Intel 8th gen if you are looking for low idle power.
Any modern CPU with integrated GPU will do, you'll also need to make sure the motherboard uses minimal power. As long as you have sleep state support and there's no dGPU in the system to limit deeper sleep states for the package as well, any Intel CPU starting with Haswell will idle at 1-2W. Choose an efficient motherboard and you're all set whether you choose a dual, a quad or a more-core.What would you recommend for a CPU with low idle power consumption that's good enough for a NAS system ?
Isn
t there a 35 watt TDP AM4 variant?
If you are looking something with a bit more punch and more mainstream, the G3930 and I5-7400 are low power as well. Try to avoid AM4 and Intel 8th gen if you are looking for low idle power.
I haven't seen anything to suggest that 8th generation should have worse idle power consumption than 7th.
Apollo Lake chips have me quite intrigued, 10 TDP sounds pretty nice:
https://www.tomshardware.co.uk/asrock-apollo-lake-motherboard-intel,news-54041.html
Half the amperage, not half the wattage, thats the same.One thing that makes comparing power consumption quite difficult is that reviewers don't disclose if they're on 110v or 220v
220v consumes half the wattage of 110v.
Plus different motherboards used in tests.
There is, but the 50W G3930 uses less power.
The AM4 chip comes with Vega graphics so I would think it would be a much better choice?
Haven't checked all CPUs, but from what I've seen 8th gen Pentiums idle about ~ +8 watts more. Here are some of the sources I've seen:
https://www.techpowerup.com/reviews/Intel/Pentium_Gold_G5600/16.html
https://www.gamersnexus.net/hwrevie...-g5600-review-benchmarks-vs-amd-ryzen-3-1300x
https://www.anandtech.com/show/13660/amd-athlon-200ge-vs-intel-pentium-gold-g5400-review/20
https://www.techspot.com/review/1698-amd-athlon-200ge/page2.html
Thanks for that. Those results are surprising to me. Particularly examples like the i3-8300 vs 7700K. I don't see any reason the idle should be higher on the new chip with the same number of cores and lower clock speeds. Maybe the platform uses more power?
Its hard to compare since people seem to measure idle different ways, if they measure it at all and the rest of the platform can make a big difference sometimes.
Anandtech turns out has a pretty good benchmark database and I think they measure at the rail so that takes motherboard out of the equation completely.
One thing that makes comparing power consumption quite difficult is that reviewers don't disclose if they're on 110v or 220v
The OP wants dual m2 slots for unRaid cache - meaning bigger motherboards with proper chipsets - but even Z chipset boards can be configured for low power usage. As I already mentioned, my initial testing for a mITX Z170 board + 6600K had the system running around 15-17W idle for the entire system measured at the wall. (mechanical disks were disabled though, only the SSD was online).If you want low idle power, forget the regular chips. You have to go for the mobile versions or Gemini Lake/AM1. Then you can get under 10W assuming you get everything right
Interesting. Could you expand on "properly configured", curious what settings you've applied.The OP wants dual m2 slots for unRaid cache - meaning bigger motherboards with proper chipsets - but even Z chipset boards can be configured for low power usage. As I already mentioned, my initial testing for a mITX Z170 board + 6600K had the system running around 15-17W idle for the entire system measured at the wall. (mechanical disks were disabled though, only the SSD was online).
I danced around the notion in my previous posts, it matters a lot whether unRaid supports C (sleep) states or not. My bet would be it does, superficial searches yielded no results though. Other than that, no special settings except disabling integrated sound chipset. Further disabling other features may yield marginal savings.Interesting. Could you expand on "properly configured", curious what settings you've applied.
The OP wants dual m2 slots for unRaid cache - meaning bigger motherboards with proper chipsets - but even Z chipset boards can be configured for low power usage.
I danced around the notion in my previous posts, it matters a lot whether unRaid supports C (sleep) states or not. My bet would be it does, superficial searches yielded no results though. Other than that, no special settings except disabling integrated sound chipset. Further disabling other features may yield marginal savings.
I cannot stress this enough: most reviews use dGPUs in their idle power consumption tests. This helps them be consistent with most of their past and future reviews, but completely skews results from a minimalist power footprint perspective (adds dGPu power consumption and prevents CPU from entering a deep package C state sleep). A modern Intel CPU without a dGPU in the system will properly enter deep package and core C state sleep and therefore consumer under 2W at idle. I do not own an AMD APU right now, but it should behave similarly (AM1 did that with excellent results). This means that any modern system with minimal I/O installed should consume under 20W at idle, most likely closer to 15W if PSU and MB were chosen correctly.