Intel Core i5 8400 vs. i5 9400F Meltdown/Spectre/L1TF/MDS Mitigation Impact
Should you be running a database server on a Core i5 system, the Core i5 9400F performance was slightly better.
The Darktable RAW photography software continues seeing minor performance hits from these mitigations.
Likewise, the GIMP image manipulation program is another real-world case where these mitigations provide a minor hit to the performance and still comparatively was the case with the Core i5 9400F.
The Redis performance was also similarly still affected.