Computer and flash memory maker Corsair announced today the addition of high-density 2GB and 4GB DIMM kits to its Mac Memory line. Each new kit features two sticks of either 1GB or 2GB fully buffered 667MHz memory made to work in Mac Pro desktop computers. Previously, Corsair offered only 1GB, 2GB kit, 2GB and 4GB kits for the MacBook, MacBook Pro