Wii owners, give yourself a pat on the back for unknowingly purchasing the most energy-efficient gaming console on the market.

Researchers at the Electric Power Research Institute (EPRI) recently tested three of the top-selling gaming systems — the Nintendo Wii, Sony PlayStation 3, and the Microsoft Xbox 360 — against one another to see which one created the smallest drain to their power grid. Testers played EA Sports’ Madden NFL 11 for an hour on each system, a game which is often played on all three.

The result? The Wii uses a sixth less power compared to the energy usage of its counterparts. Inhabitat writes: