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.
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.
If we look at the current market, the Patriot Viper 4 Blackout DDR4 16GB (2 x 8GB) retailing for $ 84.99 is the cheapest DDR4-4000 memory kit in the 16GB category. The timing isn’t as impressive as the frequency, however. The timing of the memory kit is configured to 19-21-21-41. However, there are some pretty decent DDR4-4000 offerings out there, but they come with a high premium. For example, the G.Skill Ripjaws V DDR4-4000 16 GB (2×8 GB) offers times from 15-16-16-36, but currently costs $ 159.99.
AMD will open the floodgates for Zen 3 on November 5th. It’s already known in town that the Ryzen 5000 series processors will land with significant Instructions Per Cycle (IPC) improvements. A better overclocking ability of the memory would certainly be the icing on the cake.