Transcend TS256MLK64V3N 2GB DDR2 SDRAM Memory Module - For Desktop PC - 2 GB - DDR3-1333/PC3-10666 DDR3 SDRAM - 1333 MHz - Unbuffered - 240-pin - DIMM - Lifetime Warranty

No matter how heavy and numerous the applications that you are using, 1333 MHz memory speed will run them smoothly DIMM 2 GB of memory to refine your computers performance 240-pin-pin DDR3-1333/PC3-10666 interface synchronizes electrical and clock signals for an efficient data transfer rate