Intel Haswell-EP Xeon 12 Core Review: E5-2650L V3 and E5-2690 V3
 

As part of our Haswell-EP coverage, the next two processors on our test beds are both 12 core variants. The E5-2650L V3 is a surprising monster, giving 12 Haswell cores at 1.8 GHz with 2.5 GHz turbo for only 65W, while the E5-2690 V3 extends the power budget to 135W for all 12 cores at a 2.6 GHz base frequency.

http://www.anandtech.com/show/8679/i...and-e5-2690-v3