I have Phenom II x4 955 black edition 3.20gz,
I overclocked it to 3.60ghz, and its very stable that way,
Motherboard : GIGABYTE 870A-UD3
GPU: MSI 460GTX 2GB overclocked.
Memory: 2X4 kingstone 8GB DDR3 1600
Case : Armor A60 + 5fans
And 620W Seasonic
I tested it 1hour with Prime program and reached max of 52c.[have scythe mugen 3 cooler]