若设为「Auto」,BIOS会依据CPU规格设置此数值。 & Power Limit TDP (Watts) / Power Limit Time 这些选项提供您设置CPU、平台或内存加速模式时的功耗极限以及停留在设置极限的时间长度。若设为「Auto」,BIOS会依据CPU规格设置此数值。此选项只有在「Turbo Power Limits」设为「Enabled」时,才能开放设置。 & Core ...
MSR 0x610 contains both power limits, PL1 and PL2. Intel is nice enough to publicly document this register. Setting bit[63] locks this register so it cannot be changed. Linux has command line tools to change MSR values so you are set. ...
static void dump_turbo_ratio_limits(int family, int model) { unsigned long long msr, core_counts; unsigned int ratio, group_size; int shift;get_msr(base_cpu, MSR_TURBO_RATIO_LIMIT, &msr); fprintf(outf, "cpu%d: MSR_TURBO_RATIO_LIMIT: 0x%08llx\n", base_cpu, msr); ...
I think that the power limits and windows mean that the PCU will control p-states so that the power averaged over a 44 millisecond sliding window remains at or below 130 Watts, but allows power averaged over a 2.9 millisecond sliding window to bump up to 156 Watts. The "enable limit" pa...
You can now choose from one of five overclock presets in raspi-config, the highest of which runs the ARM at 1GHz. The level of stable overclock you can achieve will depend on your specific Pi and on the quality of your power supply; we suggest that Quake 3 is a good stress test for...
Turbo Boost Switcher along with the computer grounded to a power strip from Supra (with filtration & is shielded) is my best solution to reduce electromagnetic field around my workspace. With turbo boost off, the spikes on the mains are reduced to a minimum which has as much effect as the...
MSR_TURBO_RATIO_LIMIT can only be used to specify a *lower* maximum Turbo frequency for each core count. The HW will pick the lower of the default (power-on) value and the programmed value. What is running on the "core under load"? Several ideas come to mind: It is not d...
It's possible that the EC locked your power limit 4 (current limit) setting to a value smaller than PL1, PL2. or you can also load it on boot with kernel parameters. I wrote this script to easily change the PL4 settings on MSR, avoid converting from decimal to hex. ...
Those limits are shared with manufacturers who then spec power supplies, cooling systems and cases that can handle those CPUs. In the old days this was pretty simple, you had a single core and a single thermal design point (TDP) that you had to hit. Then multicore CPUs came around and ...
VAIO’s TruePerformance tech is a combination of VAIO’s increased CPU power limits and a cooling system that can handle the increased heat. For reference, Intel’s Turbo Boost 2.0 technology increases the CPU frequency in increments of 100 MHz when an operating system requests a higher performan...