The MSI GTX 660 Ti is an overclocked version of the 660 Ti, hence the name Power Edition. The company has pushed the core clock speed up 105MHz from the reference design and given the Boost clock quite a bit of latitude as well. Memory speed is 1,502MHz, just like the reference design and all the cards in this roundup. Keeping the whole things frosty is an elaborate cooler with a funny name—Twin Frozr—that is comprised of two heatpipes embedded into a flat, wide array of aluminum fans. Two decently sized fans squat down on top of the heatsink and do an amazing job of keeping temperatures in check: we never saw the card go above 61C under full load, but it was easily the loudest cooler in this group when run at full load. The fan spun down nicely once the stress was relieved, like a college student exhaling after a tough final exam.