Ryzen Temperature report

[Extarys]

Hi guys!

I got my hardware today for my Ryzen build, yay!

Mobo: Asus Crosshair VI Hero (firmware from march 13th)
CPU 1800X

I was wondering how can I monitor the temperatures under Linux mint? I updated the kernel to 4.10.4 for multi threading.
lmsensors doesnt pick anything. I was wondering if there is a good hardware information and monitoring tools for linux mint that could potentially show the info I'm looking for.

Thanks!

[xenopeek]

As of yet AMD haven't made code or information available for how to access the CPU temperature sensors. Similarly that code or information is also not available yet for motherboards I've seen Linux tests for (on phoronix.com and others).

[Extarys]

I understand.

I noticed my 1800X never goes over 3.6GHz even under full load for 25-30 minutes so I overclocked a little to 4.00GHz (+0.1v on CPU, CPU Core Ratio 40.00). I've got a Noctua NH-D15 and I'm affraid of over-heating even though this beast can manage some high temp. The fact that I cannot see the temperatures make me go crazy, I love to monitor my stuff..

[xenopeek]

As I understand it from https://en.wikipedia.org/wiki/Ryzen#Summit_Ridge and articles about the architecture I've read, the boost speed (4.0 GHz) is available only when no more than 2 cores are active. E.g., giving it a workload enough for 3 or more cores will lock the CPU at the base speed (3.6 GHz). Similarly, XFR (which is disabled when you overclock) will increase speed above the boost speed if and only if the temperature allows for it. Basically these are measures to improve performance for one or two heavy tasks. XFR does so safely as it is tied to the CPU's temperature sensor.

You can likely read the temperatures in the BIOS? So run that full load for 25 minutes, reboot and access the BIOS to quickly look at the temperatures. But yes, you would want to monitor this actively with overclocking. Without adding external temperature sensors you can't just yet.