Boost Clock? 2.7Ghz?

#1

I tested the CPU performance with Prime95 on Radxa x4.
However, the clock only reached up to 2.7Ghz.
And, it operates at an average of 2.2Ghz during the test.
The temperature did not exceed 70 degrees, so it does not seem to be throttling.

The product spec is 3.4Ghz as the maximum.
Why is this difference occurring?

#2

You need to enable C states in uefi. It should be the default though.
3.4 GHz is a single core turbo speed, the max for 4 cores it 2.9, if I recall correctly.

#3

You need check TDP PL1 and enable C-state
These two items will affect the CPU frequency

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