Crucial BL25664TR1337 Ballistix Tracer 2GB 240-Pin DDR3 PC3 10600 Desktop Memory Module Size - 2GB Package - Ballistix Tracer 240-pin DIMM (with LEDs) Feature - DDR3 PC3-10600 Specs - DDR3 PC3-10600 / 7-7-7-24 / Unbuffered / NON-ECC / DDR3-1333 / 1.65V / 256Meg x 64