Intel Core i9-12900K Review

Memory Performance

In our memory bandwidth the new Intel 12th Gen CPUs running with DDR5-5200 cleanly beat the CPUs running on DDR4-3600. One point of note is that Ryzen 5 and Ryzen 7 suffer from their single chiplet configuration but that is a side show. DDR5 is brand new and immediately leads the charts by a significant margin.

AIDA64 shows that DDR5 memory suffers badly with long latency. This behaviour is expected from the specification as our Corsair Vengeance DDR5-5200 is rated at 38-38-38-84 compared to the DDR4-3600 which is rated at 16-16-18-36. By our reckoning DDR5 will  need to run at 8,000MT to claim an undisputed lead over high quality DDR4.

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