Buy Kingston KSM32RD4/64HCR RAM 

• Capacity: 64GB
• Memory Type: DDR4 SDRAM
• Speed: DDR4-3200 (PC4-25600)
• Memory Configuration: Dual-rank
• CAS Latency (CL): 22
• Error Correction Code (ECC): Yes
• Memory Module Type: Registered DIMM
• Pins: 288-pin
• Warranty: Lifetime Warranty