AMD Ryzen 9000 To Retain DDR5-6000 Sweet Spot, Offers Additional 1:1 Headroom

Each generation of Ryzen processors have its “sweet spots”, which denotes the best RAM speed to pair with a specific Ryzen architecture. For reference, the most recent Ryzen 7000 processors have their sweet spots set at 6000MT/s. According to Wccftech’s report, AMD may retain the same number for the Ryzen 9000 series, though it may support 6400MT/s for 1:1 ratio as well.

Ryzen 9000 Retains DDR5-6000 Sweet Spot

AMD’s Ryzen processors are known to have certain limitations on memory overclocking due to Infinity Fabric and memory controllers – while this doesn’t limit you on how fast you can overclock your memory, going past the so-called “Sweet Spot” will often come with increased latency as the memory controller clock (UCLK) and memory clock (MCLK) decouples from its default 1:1 ratio. Naturally, keeping the memory controller clock too high and you’ll cause system crashes, so there’s a limit on how far you can go with 1:1.

When pairing Ryzen 9000 with X670(E) or X870(E) motherboards, the upper limit has been raised to 6400MT/s, which should offer a small boost in gaming performance. Specifically, the upcoming X870/X870E motherboards should have better design to accommodate RAM overclocking. For those who have four sticks of memory, the “vast majority” of motherboards are reportedly capable of supporting 8000MT/s via 1:2 ratio; meanwhile, the 2-DIMM configuration can support “close to or above” 9000MT/s in the same ratio.

If you’re considering an upgrade to the Ryzen 9000 processors in the near future, at least you won’t have to swap for faster RAM or attempt to overclock them beyond what the module is originally rated for (which naturally comes with a small bit of stability cost), assuming you already own the DDR5-6000 modules. Note that Ryzen 9000 has also increased the default RAM speed to DDR5-5600, a step above from the Ryzen 7000 series of DDR5-5200.

Pokdepinion: I suppose most will stick to DDR5-6000, given that most Ryzen 7000 systems are running on B650 in particular.