DDR3 R-DIMM Engineered specifically for use in today's latest high-powered dedicated servers and workstations, Transcend's DDR3 Registered DIMM offers unparalleled stability and synchronized performance in configurations where many modules are installed. These modules also feature a revolutionary new on-board thermal sensor, which allows the system to monitor temperatures and redistribute memory load--a process that can greatly enhance memory reliability, efficiency, and overall system stability. Specifications Module Type DDR3 REG-DIMM Frequency DDR3-1066 / DDR3-1333 /DDR3-1600 Function ECC Registered Memory Pin Number 240Pin Capacity 1GB / 2GB / 4GB / 8GB / 16GB / 32GB DRAM Type 128Mx8 / 256Mx4 / 256Mx8 / 512Mx4 / 512Mx8 / 1Gx4 / 2Gx4 Timing Description 7-7-7 / 9-9-9 / 11-11-11 Voltage 1.5V Rank Number 1 Rank / 2 Ranks / 4 Ranks PCB Height 0.72 Inches / 1.18 Inches Operation Temperature 0~85 ℃