HX620W (also known as CMPSU-620HX) is a power supply that Corsair claims can deliver its rated power at 50º C, and featuring a modular cabling system, a big 120-mm fan, active PFC, high efficiency and two video card power cables for you to feed your SLI or CrossFire system. We completely disassembled this power supply to see the components and design used and also tested to see if it can really deliver its labeled 620 W.