Hardware memory encryption is available in Intel Architecture, supporting Total Memory Encryption (TME) and page granular memory encryption with multiple keys (MKTME). and in SPARC M7 generation since October 2015.
hardware MEMOrY encrypTIon is aVaiLAblE IN inTeL aRCHiteCTUrE, supPOrtING toTaL memory eNCRyption (Tme) aNd page GRanular mEMorY ENCRYption with MUltiple kEyS (mKtme). aNd IN sparc m7 GEnerAtiOn SiNCE ocTobER 2015.