OWC 512 GB Kit (8x64G) DDR4-2933 ECC Load Reduced DDR4...

Macintosh 512 GB Kit (8x64G) DDR4-2933 ECC Load Reduced DDR4 DIMM 288pin 8×64 Kit Tower and Rack Macs 6 channels Up to 1.5 TB RAM on 24 and 28 core. ECC Registered – Do not mix Registered and Load Reduced modules