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DDR4-4000 is said to be the new sweet spot for AMD Ryzen 5000 CPUs



Ryzen desktop processor

Ryzen desktop processor (Image credit: AMD)

Turkish news outlet Technopat has released an alleged AMD slide showing that DDR4-4000 is the sweet spot for AMD’s upcoming Ryzen 5000 series (codenamed Vemeer) chips. The origin of the foil is unknown. We therefore recommend taking the information with a pinch of salt.

The last sentence on the slide reads: “DDR4-4000 is for the Ryzen 5000 series like DDR4-3800 is for the AMD Ryzen 3000 series – good luck!”. For the record, the statement is imprecise, as AMD has suggested that DDR4-3733 is the performance sweetspot for the existing Ryzen 3000 series processors (code name Matisse). In summary, it can be said that the Ryzen 3000 parts enable synchronous operation between the Infinity Fabric clock (FCLK) and the memory clock (MCLK) up to 1,800 MHz or DDR4-3600. Some really good samples can handle 1,900 MHz (DDR4-3800) before exceeding the 1: 1 ratio.

If the information is real, Ryzen 5000 processors would allow an FCLK up to 2,000 MHz (DDR4-4000). However, it is important to emphasize that DDR4-3200 is still the official memory speed supported by the Ryzen 5000 processors. So this still depends on the quality of your chip’s integrated memory controller (IMC), which determines whether you can reach the higher frequencies.

AMD Ryzen 5000 with DDR4-4000 support (Photo credit: Technopat)

Storage vendors will try to take advantage of the Ryzen 5000 processors. Assuming the improved memory support is correct, the new Zen 3 processors will certainly increase sales of DDR4-4000. However, it remains to be seen whether they will take advantage of these memory kits, as ramping up the frequency ladder usually means sloppy timing.


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