The E5 are the real server chips running Haswell-EX. Note they don't have integrated graphics, so you use them with a real console. These things have Turboboost which is a complex calculation saying how many multiples of 133MHz faster they will run from all cores down to a single core running.
Hi, My Z440 video-editing workstation has intermittent power problems. PSU was replaced 2 days ago, but now the problem looks to be a motherboard issue pulling down the PSU into protection mode. While investigating, I discovered an unrelated issue: The PCIe adapter board (plugged into PCIe slot #4) for the 256GB Samsung NVMe SSD has some sort of solder residue on it.