The change came to light in April, when Ben Kilpatrick installed a new OS on a Ryzen 7 9700X system built on AMD's Zen 5 architecture. He...

AMD silently disabled TSME memory encryption on consumer Ryzen chips via a firmware update. The feature still works on Pro CPUs. AMD won't say why.

AMD's stripping of TSME from consumer CPUs appears to be a deliberate, covert move.