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Designed for applications that are sensitive to down time and require high performance to enable frequent access to large data sets, NVDIMMs combine the speed of DRAM, the persistent storage of NAND and an optional power source into a single memory subsystem that delivers increased system performance and reliability. NVDIMMs are ideal for big data analytics, storage appliances, RAID cache, in-memory databases and on-line transaction processing.
NVDIMMs need power to backup DRAM content to the onboard NAND when system power is absent. Backup power can be supplied either through the motherboard or by a tethered backup power supply. Micron PowerGEMs are a tethered backup power supply. PowerGEMs are supercapacitor-based power modules intended for use with one or more of Micron NVDIMMs. The PowerGEMs utilize either supercapacitors or hybrid supercapacitors which enable designs for PCIe and 2.5” drive bay small form factors.
Micron’s nonvolatile DIMMs combine the speed of DRAM with the persistent storage of NAND flash to remove I/O bottlenecks and deliver big performance.
JEDEC specifies that the pull-up resistor for the SAVE_N pin on NVDIMMs belongs on the motherboard. Micron designs NVDIMM with and without the pull-up resistor to support all customers, since some current motherboards do not include the SAVE_N pull-up resistor.