This 64GB memory is 100% compatible with Dell PowerEdge FC640.
Our memory team will be happy to assist you in choosing the right memory and configuring your server.The following technical conditions should be taken into account in advance:- You can use RDIMM memory or LRDIMM memory. LRDIMM memory is particularly recommended when large memory capacities are to be achieved.- Registered DIMM and Load Reduced LRDIMM memory modules must not be mixed. When upgrading, you should therefore know which memories are already available or upgrade completely to RDIMM or LRDIMM memory.- Memory slots for which no processor is available must not be populated- Higher memory frequencies may adapt to other memory clocks in the system environment and support correspondingly slower clock rates.