AMD Ryzen 5000 CPUs may run best with faster DDR4-4000 memory

A leak slide purported to be from AMD hints at faster memory support with AMD Ryzen 5000 processors. It details a new standard for the so-called sweet spot of memory performance, DDR4-4000, which will see AMD Ryzen gaming PCs thirst for even faster memory with the coming generation.

AMD Ryzen CPUs tend to be very responsive to faster memory, much more so than Intel’s comparable processors, although there’s a limit to how much performance you’ll gain by creeping up memory speeds before system latency knocks it down a peg or two. Let me explain: Ryzen 3000 processors have a ‘sweet spot’, when the Infinity Fabric clock (fclk), memory controller clock (uclk), and memory clock (mclk) are at a 1:1:1 ratio. The best speed to ensure this on existing Ryzen chips is 3,600MHz DDR4, although you’ll occasionally see recommendations up to 3,733MHz.

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