Hi, On Tue, Aug 18, 2026 at 12:48 AM Jonathan Gray <[email protected]> wrote:
> On Mon, Aug 17, 2026 at 09:17:29PM +0200, Sebastian Reitenbach wrote: > > Hi, > > > > I got this fanless Intel N95 based system. It came with Windows 11 > > pre-installed. > > hwinfo64 showed, that it can boost up to the promised 3.4GHz. But on > > OpenBSD, > > I tried with > > > > apm -H, or hw.perfpolicy=high,auto > > > > to no avail, hw.cpuspeed never goes higher than 1701. > > 1701 represents the turbo setting > > look at the cpu frequencies in sysctl hw.sensors > Ah, OK, looking at the right place, in idle state I saw this: sysctl hw.sensors hw.sensors.cpu0.temp0=38.00 degC hw.sensors.cpu0.frequency0=800000000.00 Hz hw.sensors.cpu1.frequency0=800000000.00 Hz hw.sensors.cpu2.frequency0=800000000.00 Hz hw.sensors.cpu3.frequency0=800000000.00 Hz hw.sensors.acpitz0.temp0=27.80 degC (zone temperature) then started 4x sha256 -ttt and once I saw this: sysctl hw.sensors hw.sensors.cpu0.temp0=54.00 degC hw.sensors.cpu0.frequency0=3300000000.00 Hz hw.sensors.cpu1.frequency0=3350000000.00 Hz hw.sensors.cpu2.frequency0=3350000000.00 Hz hw.sensors.cpu3.frequency0=3300000000.00 Hz hw.sensors.acpitz0.temp0=27.80 degC (zone temperature) a short spike up to maximum, then later on, it kept staying at: sysctl hw.sensors hw.sensors.cpu0.temp0=49.00 degC hw.sensors.cpu0.frequency0=2700000000.00 Hz hw.sensors.cpu1.frequency0=2700000000.00 Hz hw.sensors.cpu2.frequency0=2700000000.00 Hz hw.sensors.cpu3.frequency0=2700000000.00 Hz hw.sensors.acpitz0.temp0=27.80 degC (zone temperature) then next test running only 2x sha256 I saw: sysctl hw.sensors hw.sensors.cpu0.temp0=52.00 degC hw.sensors.cpu0.frequency0=3250000000.00 Hz hw.sensors.cpu1.frequency0=3000000000.00 Hz hw.sensors.cpu2.frequency0=3000000000.00 Hz hw.sensors.cpu3.frequency0=3050000000.00 Hz hw.sensors.acpitz0.temp0=27.80 degC (zone temperature) and this: sysctl hw.sensors hw.sensors.cpu0.temp0=62.00 degC hw.sensors.cpu0.frequency0=3200000000.00 Hz hw.sensors.cpu1.frequency0=3250000000.00 Hz hw.sensors.cpu2.frequency0=3250000000.00 Hz hw.sensors.cpu3.frequency0=3150000000.00 Hz hw.sensors.acpitz0.temp0=27.80 degC (zone temperature) so with 2x sha256 it keeps frequency above 3GHz. as soon as I add a third sha256 it drops all 4 to sysctl hw.sensors hw.sensors.cpu0.temp0=53.00 degC hw.sensors.cpu0.frequency0=2700000000.00 Hz hw.sensors.cpu1.frequency0=2700000000.00 Hz hw.sensors.cpu2.frequency0=2700000000.00 Hz hw.sensors.cpu3.frequency0=2700000000.00 Hz hw.sensors.acpitz0.temp0=27.80 degC (zone temperature) Under 2-thread load, the N95 boosts to ~3.2–3.3 GHz, but under sustained 3–4-thread load it settles at ~2.7 GHz. I assume this is an all-core turbo/power-limit behavior and working as expected? cheers, Sebastian -- https://buzzdeee.reitenba.ch
