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A-Tech 64GB Memory Kit for HP Workstation Z420 - (8X 8GB) DDR3 Dual Rank x4 ECC Registered DIMM RAM Upgrade
64GB Kit DDR3 Memory RAM ECC Registered DIMM (ECC-RDIMM) 2Rx4 (Dual Rank x4) Designed for HP Z420 Workstation with a 600W PSU or larger only* (400W PSU has a max memory capacity of 16GB ECC RDIMM) Genuine A-Tech Brand - Lifetime Warranty - Toll Free Technical Support RAM 8 GB DDR3, Brand A-Tech, model number Weight 11 ounces, Dimensions 6.8 x 4 x 2.5 inches, Dimensions LxWxH 6.8 x 4 x 

Price is $281.00

Price: $280.71