Random Access Memory (or just Memory) serves as temporary information storage for a processor. The more high-quality RAM your device has, the easier it is to do more and more complex calculations quickly, and the smoother it runs. A stick of HPE 815101??B21 Memory is an excellent choice for any device that uses Load-Reduced Registered 4DRx4 DDR4 DIMM Memory. With 64 GB of PC4??21300 DDR4??2666 (PC4??2666V??L) Memory, this HPE 815101??B21 LRDIMM is sure to boost your system’s speed and productivity. This HPE 815101??B21 Memory has been refurbished, tested for complete functionality by our expert in-house Certified Technician, and is ready to ship today! Purchase with confidence, as the photos above represent the exact quality of your items, and come bundled with our 90 Day Warranty. *Please note, we have additional Refurbished HPE Server DIMMs in stock; feel free to send a message and we will update the quantity to suit your specific needs.* Thank you for choosing AltaTech for all of your lightning-fast IT needs!