CPCR: "MSI recently outfitted two of their GeForce GTX 680 variant graphics cards with 4GB of GDDR5 memory and their famous Twin Frozr III custom cooler. While the two new cards will be cosmetically identical, one of the cards will run at the reference clocks of 1006MHz (base) /1058MHz (boost) core and 1502MHz memory while the other will run at overclocked clocks of 1058MHz (base)/1124MHz (boost) core and 1502MHz memory..." (MSI, PC hardware)