9900K overclock requires much less vcore that a year ago
I bought a 9900K just over a year ago and spent a good amount of time overclocking it. The best I could do was 5.0ghz at 1.32v. Any less voltage and prime95 would hang after 10-15 minutes. I made my peace with losing the silicon lottery and left it at that.
Fast forward to today, I transplanted my system to a new case. Everything is a the same, except for going from 2x360 radiators to 1x480 and 1x360. Temps are roughly the same, about 2C better with the new setup. I was playing around again and thought I might as well try to drop the vcore. I haven't done a full suite of tests for stability yet, but I've run prime95 for an hour at 1.28v vcore with all other settings the same. Last year that would make the system hang almost immediately.
I've been overclocking for a long time, since the Athlon XP era, but I've never seen a chip improve over time like that. There is a chance I messed up something last year, but if that's the case, I can't think what that could be.
Has anyone had this experience with the 9900K or another CPU before?