Up for sale is a lot of 4 Crucial DDR3 SDRAM memory modules, each with a capacity of 4GB, for a total of 16GB. These UDIMM modules have a bus speed of PC3-10600 and are model number CT51264BA1339.M16FD. With 240 pins and Non-ECC memory features, these modules are compatible with most motherboards. Ideal for upgrading your computer's memory for better performance.