News AMD Zen 2, Zen 3, Zen 3+, and Zen 4 Mobile CPUs Compared in Linux

[Admin]

Phoronix put together a review of four generations of Ryzen mobile CPUs to see the architectural performance improvements AMD has made in a Linux environment.

AMD Zen 2, Zen 3, Zen 3+, and Zen 4 Mobile CPUs Compared in Linux : Read more

 

[linuxdude]

Glad phoronix still does its own testing

 

[bit_user]

Unfortunately, the averages muddled together the CPU and iGPU results.

The other thing to note about Phoronix' tests is that average power consumption rose by 89%, relative to the next-highest (the 6850U). As with the CPU performance data, that also appears to include data from both CPU and GPU-centric tests.

 

[bit_user]

Glad phoronix still does its own testing

Phoronix plays too many games with their testing, for my taste. The test suites are always cherry-picked, usually with little transparency into the underlying criteria.

Then, there's nonsense like I mentioned about the CPU and GPU results being averaged together. Toms never does that.

What that means is you can rarely take their averages at face value. You really have to look at the individual test results to try and piece together your own story about what the data is trying to say.

In this case, I suspect Lenovo put a lot more work into the cooling solution for the 7840U model, given the difference in average power. That makes it hard even to look at single benchmarks like the "Timed Linux Kernel Compilation" and see it as a true apple-to-apples comparison of the CPUs, since the 7840U is probably throttling much less than the others due to external factors.