"With recently seeing a deal on the Intel Core i5 9400F
processor, I picked it up for testing as part of our Spectre / Meltdown
/ Foreshadow / Zombieload testing since it features some hardware
mitigations and is otherwise quite similar to the unmitigated Core i5
8400 that I also have in the benchmarking farm. Here are some results
when benchmarking the Core i5 8400 and Core i5 9400F with and without
the current Linux mitigations for these CPU vulnerabilities."