OCC has published a review on the MSI GTX 650 Power Edition OC

Usually new series start off with their high end offerings and then work their way to mid-range and low-end graphics cards, followed by a refresh. The performance of the high performance cards entice customers and set a pace for the series. Most consumers opt for the more affordable cards. NVIDIA has begun filling in the mid- and low-range cards where it previously had a gap. Coming in above the GT 640 and below the GTX 660 is the new GTX 650 up for review here! The GTX 650 is very closely related to the GT 640 as it too is equipped with the new GK107 core. The card has 384 Stream Processors on a 28nm die with 1GB of GDDR5, a step above the GDDR3 of the GT 640. Memory Bus is still 128-bit. The GTX 660 is quite a bit above in terms of performance since it has 960 Stream Processors, to start listing the differences.

MSI has taken the GTX 650 and applied its Power Edition styling to it similar to the MSI HD R7770 reviewed earlier in the year. A higher clock speed, improved PCB components, and a large heat sink that is able to be custom tailored for short length or high airflow suggest that this card should perform and overclock far better than a stock reference offering!

  MSI GTX 650 Power Edition OC Review