The Corsair XMS2 2-1GB sticks are high-performance DDR2 RAM memory modules designed for computers that require faster processing speeds. These DIMM modules come in a total capacity of 2GB, split across two 1GB sticks. With a bus speed of PC2-6400 (DDR2-800), these memory modules are ideal for boosting the speed and efficiency of your computer's performance. The Corsair brand is known for its reliability and quality, making these RAM sticks a dependable choice for upgrading your system's memory capacity. There no box but they have never been used.