Intel Baseline Profile Yields Odd Power/Performance On Linux

Again, all these tests were repeated when surprised by the severity of the power difference in the Intel Baseline Profile actually being worse than the ASUS PRIME Z790-P WiFi defaults and they continued to reproduce. And thinking that maybe the RAPL/PowerCap counters were somehow messed up under the Intel Baseline Profile settings didn't jive when seeing the CPU temperatures were also higher with the Intel Baseline Profile engaged.

With this initial testing, the Intel Baseline Profile mode only led to a ~2% performance hit overall based on 69 benchmarks initially run for this comparison. That's actually lower than the 8~9% that has been reported in recent days with other Windows news outlets. So that leaves either Linux doing something differently or some combination going awry with this motherboard.

Under Linux with this Intel Core i9 Raptor Lake Refresh system, the CPU power consumption went up by 16% on average with using the Intel Baseline Profile option... Rather the opposite of what's to be expected.

While running in the Intel Baseline Profile mode, the CPU peak frequency was around 97% that on average of the Intel Core i9 14900K running with the ASUS BIOS defaults.

And the CPU temperature with this Intel Baseline Profile stability option was up by 10% on average.

See all the individual metrics and more via this result page. Needless to say, I am exploring this more on some other motherboards and diving in to see if Linux is behaving differently than Windows with these settings or some other combination causing these rather unexpected results for the Intel Baseline Profile on Linux with the Intel Core i9 14900K + ASUS PRIME Z790-P WiFi. Stay tuned to Phoronix.