The 2 x 1GB PC3 OCZ Technology OCZ3RPR13332GK memory modules are DDR3 SDRAM DIMMs with a total capacity of 2GB, split between two 1GB modules. Manufactured by OCZ, these modules have a lifetime warranty and feature ECC memory technology for error correction. With a bus speed of PC3-10666 (DDR3-1333) and 240 pins, these memory modules are suitable for enhancing the performance and capacity of computers requiring reliable and high-quality RAM.