DDR4 4GB 2400MHZ = PC4-19200 4GB. DDR4 8GB 2400MHz = PC4-192000 8GB. DDR4 8GB 2666MHz = PC4-21300 8GB. DDR4 8GB 3200MHz = PC4-25600 8GB. DDR4 16GB 2400MHz =PC4-19200 16GB. DDR4 16GB 2666MHz =PC4-21300 16GB.
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