We measure system-wide power draw from the wall while running the 3DMark Time Spy stress test for 30 minutes.
As for power draw, the Gaming X sits neatly between the 5600 XT Pulse using its old BIOS, and the Pulse with its updated BIOS. This gives an interesting look at the difference memory speed makes on power draw, though there are also other factors at play. Either way, total system power draw is pretty much as expected.