Ryzen 7840HS - another data point

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pcwolf
Posts: 48
Joined: Fri Apr 03, 2020 4:49 pm

Ryzen 7840HS - another data point

Post by pcwolf »

Greetings!

My lab needed yet another gizmo and just acquired a Beelink SER7 mini pc.

AMD Ryzen 7 7840HS w/ Radeon 780M Graphics (16) @ 5.293GHz
F@H v7.6.21 on Arch Linux produces on the order of 500,000 +/- PPD consuming 2-3 watts

Ryzen 9 7940HS version is on the market, but about 25% price premium for little improvement and higher heat and power requirements.

Seems to be a current market dump of similar units with the pending introduction of new Ryzen 9 89xxH processors, which will still feature the identical Radeon 780M graphics with a very slight boost in CPU frequency.

Currently not able to figure which AMD graphics drivers Arch needs to fire up folding on the iGPU.
Interesting that user can set the amount of installed system ram to dedicate to the graphics unit in UEFI setup. Default is 4GB
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bikeaddict
Posts: 196
Joined: Sun May 03, 2020 1:20 am

Re: Ryzen 7840HS - another data point

Post by bikeaddict »

The SER7 review by ServeTheHome measured 6-10W at idle, 44-46W sustained and 77-79W peak.

https://www.servethehome.com/beelink-se ... mini-pc/4/

TechPowerUp measured 8-10W idle, 50-65W with moderate load and 82W peak.

https://www.techpowerup.com/review/beel ... 0m/12.html

NotebookCheck 6.7-11.6W idle, 64.1-94.8W under load.

https://www.notebookcheck.net/Beelink-S ... 786.0.html

DroiX measured 12.9W at idle and 85.2W peak.

https://droix.net/blogs/beelink-ser7-review/
pcwolf
Posts: 48
Joined: Fri Apr 03, 2020 4:49 pm

Re: Ryzen 7840HS - another data point

Post by pcwolf »

Here is snapshot of Conky while folding on the SER7

Top portion under RYZEN 7840 shows the watts and CPU cycles
Bottom under PROCS shows the FahCore

This unit has an obscure NSC/ITE chip that sensors-detect does not recognize and that there is no corresponding kernel module, so I take the power reading from the running PPT on a five second scan, and which also shows an average of 44W.

Power consumed "at the wall" is not power being consumed by the folding CPU ... there are fans, memory and ports. After half a day uptime the box is still chill and cool to the touch with no noticeable hotspots. The 58C core temp is another telltale.

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