The X Series heat shields do an excellent job of dissipating the thermal load of these modules. Not that there is a significant thermal load when running at 1.6v, but they are there for the times you want to get a bit adventurous with the voltages and overclocking. Overclocking margins are not what I was looking for, but nevertheless, I was able to pull an extra 100+ MHz or 5.5% out of the modules that generated a nice boost in performance across the test suite. The modules look great and will "fit" into just about any build.



Link: OCC