TRANSCEND 4 GB DDR3 1333 U-DIMM 1Rx8 1.5V DDR3-1333 Unbuffer Non-ECC Memory CL=9 Offering the best combination of reliability, speed and stability, Transcend's DDR3 DIMMs are built with the highest quality brand-name DRAM chips available, and are rigorously tested to ensure they meet Transcend's stringent requirements for overall quality and performance. Transcend DDR3 unbuffered DIMMs are the most stable and reliable in the industry, which also makes them an economical memory solution for all desktops. Capacity: 4GB DRAM: 512Mx8 Part Number: TS512MLK64V3H Description: 4GB DDR3 1333 U-DIMM 1Rx8