HP X3421 (based on AMD 64 bits X3421 GPU) could not turbo boost to 3.4GHz It could only running at Max. speed of 2.1GHz only. Repeation: 1. Install the basic system 2. Enable the CPU frequency control feature (enabled by default), device cpufreq 3. enable Powerd in /etc/rc.conf, powerd_enable="YES" 4. make full load to the system 5. observe the sysctl variable by "sysctl -a | grep cpu.0.freq" it will show; dev.cpu.0.freq_levels: 2100/5036 1800/3650 1400/2428 dev.cpu.0.freq: 2100
Thank you for your report Paul Can you please provide additional information, including: - Exact FreeBSD version (uname -a) - /var/run/dmesg.boot output (as an attachment) - pciconf -lv output (as an attachment)
Pretty sure 2.1 GHz is the highest p-state on that CPU. Boost is CPU-internal overclocking from the highest p-state. It isn't represented in the dev.cpu sysctl tree. I don't believe the test performed here actually demonstrates that the CPU *isn't* correctly boosting when p-state, thermal and load/voltage requirements are satisfied.