AMD CPUs have it, but have a different hardware design for its random number generator.
In both cases, RDSEED is "true random", according to Intel and AMD (though the specific argument for why it qualifies as true random differs on their designs)
RDSEED is like /dev/random while RDRAND is like /dev/urandom.
In both cases, RDSEED is "true random", according to Intel and AMD (though the specific argument for why it qualifies as true random differs on their designs)
RDSEED is like /dev/random while RDRAND is like /dev/urandom.