Additional testing by HardwareBusters has demonstrated that the PS5’s CPU temperatures are measurably lower, not higher, with the new cooler design.
While RAM and VRM temperatures have risen, the CPU temperature has fallen by a larger amount.
Although tests at the time revealed the new PS5 had a higher exhaust temperature than the old model, this didn’t prove that the CPU inside the system actually ran hotter.
There’s also no info on whether this new revision is different than the original model with respect to this single VRAM chip.