Another block diagram of a more official nature leaked, this one holds the X570 chipset breakdown alongside the specs and Ryzen 3000. It's clear already that Ryzen 3000 CPUs (Matisse) and the X570 chipset will support PCIe 4.0. The new diagram once again confirms that the processor will provide a total of 24 PCIe 4.0 lanes.
The new slide breaks down everything related to the IO capabilities of the new AMD platform around Ryzen 3000, it's also a far more official looking block diagram. Now, it can not be completely ruled out that this is a fake, I simply do not expect it to be.
Ryzen 3000 (Codename Matisse) delivers 24 lanes PCIe 4.0
According to a confidential presentation titled " AMD 500-Series Chipset Engineering Interlock " dated May 2019 Ryzen 3000 as CPU (codenamed Matisse) will have a total of 24 PCIe Gen4 lanes. Four of them are used for the interconnect to the X570 chipset, leaving 20 laned Gen 4.0 for other utilization. As expected, 16 lanes (PCIe x16) are intended for graphics cards that are connected as x16 or twice x8 once. One x8 link would offer PCIe 3.0 x16 like bandwidth. Four more PCIe lanes from the CPU are designed for fast storage such as NVMe SSDs. In addition, Ryzen 3000 provides four USB 3.1 Gen 2. A dual-channel memory controller is also no surprise.
When we move to the X570 chipset, the PCIe Gen 4.0 lanes are lines, but not so abundantly clear to follow as everything can be re-routed and shared. For example, PCIe slots, M.2 SSDs, LAN, card readers or WiFi modules are to be connected via the new interface standard. The configuration depends on the respective motherboard.
Ryzen 3000 CPU and X570 chipset (Image: HKEPC)
Please do keep in mind that only Ryzen 3000 (Zen2) will open up X570 to the CPU at PCIe 4.0 x4. If a Ryzen 3000 of the Picasso family, as an APU based on older architecture, are used, the chipset connection will be made with PCIe 3.0. The X570 PCH (Platform Controller Hub) is also credited with an indefinite number of USB ports of USB 3.1 and USB 2.0 and SATA for HDD / SSD.
Numerous X570 motherboards from AMD's partners will be officially unveiled at Computex 2019 next week , no doubt about it. The board partners have been flooding their social networks for weeks with more or less concrete references to the new generation. One detail stands out: All previously unveiled X570 motherboards have a fan for chipset cooling . Whether AMD will officially introduce the Matisse CPUs at Computex remains to be seen. In any case, they will not come onto the market at the end of May, because officially the date is Q3 2019, unofficially July is expected for the market launch.
AMD Ryzen 3000: New Block diagram about PCIe 4.0 on Matisse and X570 chipset
