Intel Xeon E3-1260L v5 

However, it's not a case of the Haswell's L3 cache being a lot worse: the 20MB L3 cache of the Xeon E5-2667 v3 is only slightly slower than the Xeon E5-2690 and is still faster than the Xeon E5-2697 v2 (30MB).

Of course, those kind of bandwidth numbers only matter for specific HPC benchmarks as the L3 cache (30-45MB L3) will take care of most of the requests.

For a workstation or server builder, in the 2S market, Haswell-EP offers an unmatched combination of performance and features.

Obviously the efficiency improvements that you get with AVX code will more than make up for the clock speed differences.

Just like Ivy Bridge-EP before it, we will get multiple die variants of Xeon E5 2600 v3 family which will only be detailed once they launch next year.

The new Haswell architecture would further leverage the performance over the existing Ivy Bridge architecture based Xeon family delivering more performance with improved efficiency which is the key role of effectiveness in the enterprise and workstation scape.

They claim it will be Intel's first 14nm Xeon processor which obviously suggests that it will not be preceded by Broadwell in the lower performance server categories.

Intel will apparently allow Haswell and Broadwell to give off a little more heat than their predecessors.