Good Binned Power chips( etc I bought a couple sets ) run hot on AMD platforms, they need to be undervolted, they max at around 1680 7-7-7....obviously looser is worse on AMD so i didn't bother.
They do rather well 6-6-6 1333, had them to 1400.......undervolted.
A buddy of mine has the ripjaws 1600 cl 7, not so lucky. Refuse to run rated specs of 7-7-7 1600 on AMD platform. Will only run 8-7-7 at rated volts.
Maybe he got a bad set....he plans to RMA.
The IMC on the cpu is known good tested by me.