My objective is to set up a mini server (not HTPC) with low power consumption in idle mode, yet offering nice performance when used. The focus is more on data safety than availability. In other words: quality parts, but redundancy only for storage. Not considering myself to be biased, after some research I felt that some AMD desktop APUs would offer good value. Questions remaining are: - Will the idle state of the GPU lower power consumption and unleash resources for the CPU? - Will Cool'n'Quiet and Turbo Core lead to the intended low power consumption in idle mode but performance under load? - Will Linux support this scenario as intended? Quite a few questions and forum discussions seem to suggest that this is not necessarily the case.

I recently bought a new CPU (AMD Ryzen 3 2200G) which supports a "Boost Clock", however when I run cpupower frequency-info I get: boost state support: Supported: no Active: no Boost States: 0 Total States: 3 Pstate-P0: 3500MHz Pstate-P1: 2300MHz Pstate-P2: 1600MHz turbostat says that cpufreq boost: 1. According to AMD: > Max boost for AMD processors is the maximum frequency achievable by a single core on the processor running a bursty single-threaded workload. Max boost will vary based on several factors, including, but not limited to: thermal paste; system cooling; motherboard design and BIOS; the latest AMD chipset driver; and the latest OS updates. GD-150. I'm using the stock AMD Wraith Cooler with pre-applied thermal paste. I've updated the BIOS on my motherboard (Asus Prime A320I-K/CSM), reset the settings a few times, and made sure that the boost clock option was set to "Auto" instead of "Disabled". In other questions regarding clock boosting not working, CPUPower always says that it's "Supported" even if it's not "Active". With all this in mind, I don't know whether CPUPower should be reporting that "boost state" is supported. Given that this is a new CPU, I'm worried that it's defective in some way that is preventing clock boosting from working properly. **Should CPUPower be reporting that "boost state" is "Supported", even if that functionality is disabled for other reasons? Are there any settings or parameters that I missed that might be disabling this functionality? Could this discrepancy be a sign that the CPU or some other component in my system is defective? If so, which components would be most likely?** Raw output of cpumode (requested script): Boost: on schedutil mode is currently activated. 1431MHz 1419MHz 1419MHz 1419MHz No frequency limit is enforced. Raw output of cpupower frequency-info: analyzing CPU 0: driver: acpi-cpufreq CPUs which run at the same hardware frequency: 0 CPUs which need to have their frequency coordinated by software: 0 maximum transition latency: Cannot determine or is not supported. hardware limits: 1.60 GHz - 3.50 GHz available frequency steps: 3.50 GHz, 2.30 GHz, 1.60 GHz available cpufreq governors: userspace powersave ondemand conservative performance schedutil current policy: frequency should be within 1.60 GHz and 3.50 GHz. The governor "schedutil" may decide which speed to use within this range. current CPU frequency: 1.60 GHz (asserted by call to hardware) boost state support: Supported: no Active: no Boost States: 0 Total States: 3 Pstate-P0: 3500MHz Pstate-P1: 2300MHz Pstate-P2: 1600MHz

What I have always understood is that a CPU can have multiple cores, but a core can only belong to one CPU. The information I found on the Internet also shows this. But when I use lscpu --extend, it shows that multiple CPUs belong to a core? The following shows the data I used lscpu --extend on my linux server. Does this show that both cpu0 and cpu24 belong to core 0? CPU NODE SOCKET CORE L1d:L1i:L2:L3 ONLINE MAXMHZ MINMHZ 0 0 0 0 0:0:0:0 是 2900.0000 1200.0000 1 1 1 1 1:1:1:1 是 2900.0000 1200.0000 2 0 0 2 2:2:2:0 是 2900.0000 1200.0000 3 1 1 3 3:3:3:1 是 2900.0000 1200.0000 4 0 0 4 4:4:4:0 是 2900.0000 1200.0000 5 1 1 5 5:5:5:1 是 2900.0000 1200.0000 6 0 0 6 6:6:6:0 是 2900.0000 1200.0000 7 1 1 7 7:7:7:1 是 2900.0000 1200.0000 8 0 0 8 8:8:8:0 是 2900.0000 1200.0000 9 1 1 9 9:9:9:1 是 2900.0000 1200.0000 10 0 0 10 10:10:10:0 是 2900.0000 1200.0000 11 1 1 11 11:11:11:1 是 2900.0000 1200.0000 12 0 0 12 12:12:12:0 是 2900.0000 1200.0000 13 1 1 13 13:13:13:1 是 2900.0000 1200.0000 14 0 0 14 14:14:14:0 是 2900.0000 1200.0000 15 1 1 15 15:15:15:1 是 2900.0000 1200.0000 16 0 0 16 16:16:16:0 是 2900.0000 1200.0000 17 1 1 17 17:17:17:1 是 2900.0000 1200.0000 18 0 0 18 18:18:18:0 是 2900.0000 1200.0000 19 1 1 19 19:19:19:1 是 2900.0000 1200.0000 20 0 0 20 20:20:20:0 是 2900.0000 1200.0000 21 1 1 21 21:21:21:1 是 2900.0000 1200.0000 22 0 0 22 22:22:22:0 是 2900.0000 1200.0000 23 1 1 23 23:23:23:1 是 2900.0000 1200.0000 24 0 0 0 0:0:0:0 是 2900.0000 1200.0000 25 1 1 1 1:1:1:1 是 2900.0000 1200.0000 26 0 0 2 2:2:2:0 是 2900.0000 1200.0000 27 1 1 3 3:3:3:1 是 2900.0000 1200.0000 28 0 0 4 4:4:4:0 是 2900.0000 1200.0000 29 1 1 5 5:5:5:1 是 2900.0000 1200.0000 30 0 0 6 6:6:6:0 是 2900.0000 1200.0000 31 1 1 7 7:7:7:1 是 2900.0000 1200.0000 32 0 0 8 8:8:8:0 是 2900.0000 1200.0000 33 1 1 9 9:9:9:1 是 2900.0000 1200.0000 34 0 0 10 10:10:10:0 是 2900.0000 1200.0000 35 1 1 11 11:11:11:1 是 2900.0000 1200.0000 36 0 0 12 12:12:12:0 是 2900.0000 1200.0000 37 1 1 13 13:13:13:1 是 2900.0000 1200.0000 38 0 0 14 14:14:14:0 是 2900.0000 1200.0000 39 1 1 15 15:15:15:1 是 2900.0000 1200.0000 40 0 0 16 16:16:16:0 是 2900.0000 1200.0000 41 1 1 17 17:17:17:1 是 2900.0000 1200.0000 42 0 0 18 18:18:18:0 是 2900.0000 1200.0000 43 1 1 19 19:19:19:1 是 2900.0000 1200.0000 44 0 0 20 20:20:20:0 是 2900.0000 1200.0000 45 1 1 21 21:21:21:1 是 2900.0000 1200.0000 46 0 0 22 22:22:22:0 是 2900.0000 1200.0000 47 1 1 23 23:23:23:1 是 2900.0000 1200.0000

I'm trying to enable Turbo Boost on my server. I'm using an Intel Xeon E5 2630 v3 which should support Turbo Boost up to 3.2Ghz, according to [Intel's product page](https://ark.intel.com/de/products/83356/Intel-Xeon-Processor-E5-2630-v3-20M-Cache-2_40-GHz) . The problem is that the processor isn't overclocking, and uses 2.4 GHz as a max frequency. To test if the OS is the problem (I have tested Linux Mint and Debian), I've put the SSD in my computer with an i7 3770 where the Turbo Boost works perfectly fine. This is the output of the "cpupower" command: mint@mint ~ $ cpupower frequency-info analyzing CPU 0: driver: pcc-cpufreq CPUs which run at the same hardware frequency: 0 CPUs which need to have their frequency coordinated by software: 0 hardware limits: 1.20 GHz - 2.40 GHz available cpufreq governors: conservative, ondemand, userspace, powersave, performance current policy: frequency should be within 1.20 GHz and 2.40 GHz. The governor "ondemand" may decide which speed to use within this range. current CPU frequency is 1.20 GHz. boost state support: Supported: yes Active: yes It seems that Turbo Boost is enabled (of course, it is enabled in the BIOS), but it won't overclock even though underclocking is working to save energy. Normally it should display the Turbo Boost clock rate of 3.2 GHz as the max frequency, but it won't do it. So what is the next step to try to enable Turbo Boost on an Intel Xeon server? Do I've to enable some kernel modules or use another govenor?

My goal is to force all CPU cores to run at maximum turbo frequency (4 x 3.9 GHz) using CentOS 7. Here is the output of cpupower frequency-info: analyzing CPU 0: driver: acpi-cpufreq CPUs which run at the same hardware frequency: 0 CPUs which need to have their frequency coordinated by software: 0 maximum transition latency: 10.0 us hardware limits: 1.60 GHz - 3.50 GHz available frequency steps: 3.50 GHz, 3.50 GHz, 3.30 GHz, 3.10 GHz, 2.90 GHz, 2.70 GHz, 2.50 GHz, 2.30 GHz, 2.10 GHz, 1.90 GHz, 1.70 GHz, 1.60 GHz available cpufreq governors: conservative userspace powersave ondemand performance current policy: frequency should be within 1.60 GHz and 3.50 GHz. The governor "performance" may decide which speed to use within this range. current CPU frequency: 3.50 GHz (asserted by call to hardware) boost state support: Supported: yes Active: yes 3600 MHz max turbo 4 active cores 3700 MHz max turbo 3 active cores 3800 MHz max turbo 2 active cores 3900 MHz max turbo 1 active cores Turbo boost is working as expected - all 4 cores fully loaded are reaching 3.6 GHz. But it would be nice to have 3900 MHz max turbo 4 active cores or less (at least 4 x 3.7 GHz). How to control it? Is it possible?

I plan to set up an AMD APU system using Debian, but I cannot find hints how to achieve maximum energy efficiency and successful use of Turbo Core. In particular, the Debian Wiki HowTo on CPU Frequency Scaling is not very helpful for AMD systems. How do I have to set up my Debian system to deploy my AMD APU's features?