I'm running 3600 myself. I don't game so it's a good CPU still doing well, but mine run quite warm, like it's 45c just surfing web. Re-mounted cooler, even tried bigger cooler and had same temps. Full load is fine between 70c and 80c. but hotter than I expected at low load. I assume the upgrade in performance from 3600 to 5800x3d is obvious?