This is an Intel Sandy Bridge ES version of E5-2650, 2.0ghz, 8 core 16 threads (8C16HT), and 20M/L3.
I expect most of X79 based desktop single socket boards are compatible with this CPU.
I tested this ES CPU on ASUS P9X79 board and Sabertooth X79 (bios ver. 0802), and Rampage IV and it works very fine and found NO problem at all.
I assume, depending on BIOS update, it works on most of X79 based single socket boards.