Ryzen 7000: DDR5-6000 reportedly ‘sweet spot’, RAM tuning options revealed

The colleagues from Wccftech have asked again and want to have found out that the memory “sweet spot” of the Ryzen 7000 platform is DDR5-6000. The ratio of the memory clock and the frequency of the memory controller is 1:1 here, meaning that the memory and controller work at the same frequency of 3,000 MHz. The ratio to the Infinity Fabric Clock, which determines how quickly the individual cores communicate with each other, is still 1:1 with DDR5-6000. This ratio is ideal for enabling sharp latencies, for example.

Intel relies on a 2:1 divider for Alder Lake and DDR5, also known as Gear 2. At higher clock rates, it is even necessary to switch to Gear 4 or 4:1. According to Wccftech, the divider also changes to a ratio of 2:1 for Ryzen 7000 processors beyond DDR5-6000. The DDR5-6400 results are poor and not recommended if you are looking for even higher gaming performance.

Interestingly, mainboards with an X670E/X670 I/O hub, although designed for overclocking, are said not to deliver the best results when overclocking the main memory. This advantage supposedly goes to the B650E, for example with a mainboard from Gigabyte with only two memory slots. In addition, the colleagues suspect that the first AGESA versions still have teething problems on board, especially given that AMD is breaking new ground with DDR5 memory.

Ryzen 7000: More options for RAM tuning according to “1usmus”

Yuri “1usmus” Bubliy, known among other things for the “DRAM Calculator for Ryzen”, takes a similar stance. He confirms that up to 3,000 MHz as Infinity Fabric Clock (FCLK) is possible with Ryzen 7000. Thus, according to the overclocking experts, DDR5-6000 would also be feasible with a divider of 1:1:1. In this context, “1usmus” also reveals some other (DRAM) overclocking functions. Below are:

• Active Memory Timing Settings feature with Memory Target Speed ​​setting.
• Max IF frequency – 3000MHz
• LCLK Frequency Control
• VDDIO Voltage Control: DIMM VDD and DIMM VDDQ
• VPP Voltage Control
• UCLK MODE – no changes
• PBO and Curve Optimizer – no changes
• Timings per channel: A, B, C, and D.
• Extreme Memory Profile(XMP/EXPO) operates in two modes: Low Latency and High Bandwidth.
• Active OC Tuner with 2 settings: CPU Current Limit and CPU Temperature Limit.
• Async CPU/PCIe Clock
• CCX Clock Control, 4 CCX
• host clock

It remains to be seen to what extent this information applies, in particular to the ratio of Infinity Fabric Clock (FCLK), Memory Controller (UCLK) and Memory Clock (MCLK). According to the latest information, the press embargo for Ryzen 7000 falls on September 13th, and that for sales on September 15th. Before that, there should also be a product announcement on August 29th. As usual, the information on the presumed release comes from a leak via the partner MSI.

Source: Wccftech, Yuri “1usmus” Bubliy