Phenom IIs are NOT all 6-core... and AMD does NOT say running the RAM @ 1600 MHZ. will damage anything. Whomever stated this is incorrect.
I and many other folks have run Phenom II CPUs for years with the RAM @ 1600 MHz. without any issues what so ever. The RAM frequency does not damage the IMC. CPU-NB over-voltage for a long period of time might but it's not likely unless the voltage is ridiculously high which causes excessive heat too.
Edited by AMD4ME - 5/19/12 at 7:36pm