Guru3D posted a review on the MSI GeForce GTX 670 Power edition OC

We review the MSI GeForce GTX 670 Power edition /OC with new TwiNFrozr IV cooler. The card comes factory overclocked, is silent and remains cool. We have the 2GB Power Edition in house which comes pre-overclocked at 1020 MHz on the baseclock and 1089 MHz (misprinted in the chart below) on the boost clock. To give the card enough frame buffer to work with the cards are equipped with 2048 GDDR5 on a 256-bits wide bus.

  MSI GeForce GTX 670 Power edition OC Review