ECC Registered DIMMs & ECC UDIMMs can not be mixed. If your system came with ECC UDIMMs then use of registered DIMMs will require removal of all exisiting UDIMMs. Operational memory speed is controlled by CPU type and number of DIMMs installed.
EFetcher's mission is to provide its customers a variety of computer products and excellent service at affordable prices. Over 24 years in business. Over 500,000 satisfied customers. The item "Dell Original 64GB (4 x16GB) PowerEdge R320 R420 R520 R610 R620 R710 R820 Memory" is in sale since Saturday, May 20, 2017. This item is in the category "Computers/Tablets & Networking\Computer Components & Parts\Memory (RAM)".
The seller is "efetchercom" and is located in Lake Forest, California. This item can be shipped to North, South, or Latin America, all countries in Europe, all countries in continental Asia, Australia.