I am running the 5960 at 4.5 Ghz with no issues using Corsair Vengeance LPX 2666 DDR 4 on an Asus X99 Deluxe mobo. I am using a Noctua NH-D14 cooler which keeps things at around 50c so no thermal issues at all. I have always overclocked and upgrade well before the CPU gives out so I do not agree with the arguments against overclocking. These days the BIOS is so good at saving you from yourself its not the threat it used to be.
Please let me know if you would like my OC parameters and I’ll send them over.