I bought 2 E5-2690v2's for 2 HP Z420 I had bought. They easily outperform the E5-2690 and E5-1650v2 they replace. They have reasonable performance with 13535 multi-core and 1884 single core Passmark Benchmarks; and are reasonably priced; I got each CPU for about $68 CAD.
Feature wise they have 10 Cores, 20 Threads @ 3.0GHz, 3.6GHz turbo; 1866MHz RAM ECC, 130W, 22nm die process, vPro Intel CPU. Good Buy.