has (448) sticks of PC4 ECC server RAM available. Speeds include 2133MHz, 2400MHz 2666MHz and 2933MHz and they’re available in 8GB - 64GB capacities. MFG’s include Samsung, Hynix and Micron. All our RAM includes a 90-day rranty, has been tested to the R2v3 standard and is considered key functions working. A spreadsheet is available upon request which supplies the MFG, Models, QTY’s, Speeds, Capacities and more. Send me your questions or requests and thanks for looking.