The Guru of 3D posted a review on the MSI Big Bang Z77 Mpower motherboard

Within the Big Bang product line MSI has launched yet another Z77 motherboard, this time with a twist though, it's the all new Mpower series.

At Computex MSI already was showing their new MPower Motherboards. The MPower series will be available on the long term for both socket LGA1155 and socket LGA2011 (X79 MPower).

Today we test the Z77 MPower version, which as you'll notice is a pleasant upgrade from their Z77A-GD65 motherboard -- yet with an improved CPU VRM, more friendly warranties and a new black+yellow color-scheme which merges the Lightning series graphics cards and these motherboards a little closer together.

  MSI Big Bang Z77 Mpower Review