Transcend&s Jet Ram memory modules are manufactured with true ETT grade br&-name DRAM chips that have passed Transcend&s strict screening process & rigorous environmental testing The modules provide excellent compatibility & fully-tested reliability which is ideal for PC upgrade at an attractive price Each memory module is rated at 2666 M Hz to greatly increase data transmission efficiency by higher bandwidth of up to 21 G Bs Operated at a nominal voltage of just 12V Transcend&s DDR4 U-DIMM Jet Ram memory ensures that both operating temperature & electrical load on the memory controller can be reduced in order to save up to 40 of energy compared to standard DDR3 modules offering 15V Memory Capacity 8GB (1 x 8GB) Memory Type DDR4 Module Type DIMMMemory Speed DDR4-2666 M Hz Pin Configuration 288-pin Registered Unbuffered Unbuffered Error Correction Non-ECCCL-t RCD-t RP-t RASCL17 12 V Heat Sink Yes Working Voltage 12v