I upgraded my Z420 from an E5 1650 to the max CPU supported 2687W and have proper/adequate cooling. At maximum loading using CPU intensive work system is reporting that the CPU is running at 3.4GHZ and at no time do I observe the CPU operating above that - near to what the CPU should support of 3.8GHZ. I recently flashed to the latest bios and it immediately recognized the CPU when installed.
Any ideas what I should check to get the max potential out of the CPU? Right now CPU max temperature hit 57C so should have room to run up to 3.8