128GB (4X32GB) Mem Ram For dell PowerEdge R630, R640, R6415, R730 by CMS D64 | eBay
Server Motherboard Dual Cpu Dell R640 Server Dell Poweredge R640 1u Rack Ddr4 Ram Server - Buy Server Motherboard Dual Cpu,Dell Poweredge R640,Dell R640 Server Ddr4 Ram Server Product on Alibaba.com
Dell EMC PowerEdge R640 Server Review - IT Creations - Blog
DELL PowerEdge R640 Server 2 X 6146 3.2GHz 12 Cores 128GB RAM 2 X 1.6TB SAS SSD | eBay
16GB (2X8GB) Mem Ram For dell PowerEdge R630, R640, R6415, R730 by CMS D57 | eBay
Dell PowerEdge R640 - 2x 12-Core 4116 2.1GHz/ 128GB RAM/ 8x 1.2TB SAS HDD // STI Kansas City