Monday, April 29th 2019
AMD X570 Chipset to Feature 40 PCIe 4.0 Lanes
As we gear up for launch of AMD-s Ryzen 3000 series, details are bound to come up with increasing frequency. One of the latest, regarding AMD's in-house developed X570 chipset, which brings a renewed feature set to the AM4 platform, pertains to its PCIe lanes. AMD has included a grand total of 40 PCIe 4.0 lanes on the chipset, which will be distributed between PCIe uplink, USB 3.1 Gen2, USB 2.0 and SATA, as the spec sheet below (which may not be real) indicates. That's a whole load of bandwidth for the PC platform, not counting those PCIe lanes that are to be provided by the Ryzen CPUs.
It seems AMD will be using PCIe support level as a differentiator factor for its chipsets. The X570 is reported to be the only chipset to feature PCIe 4.0 support, while all other chipsets below it (B550 and so on) will only support PCIe 3.0. These lower-end chipsets should be manufactured by ASMedia.
Source:
Bilibili
It seems AMD will be using PCIe support level as a differentiator factor for its chipsets. The X570 is reported to be the only chipset to feature PCIe 4.0 support, while all other chipsets below it (B550 and so on) will only support PCIe 3.0. These lower-end chipsets should be manufactured by ASMedia.
27 Comments on AMD X570 Chipset to Feature 40 PCIe 4.0 Lanes
While SATA is obviously not interchangeable with PCIEx lines, maybe they employ some physical limitation. I agree, that it makes no sense for me either, what with so many ports that would suggest (4+4) and declining SATA Express popularity. Those 4^4 may just mean that somewhere below is an explanation, that PCIEx lines and SATA ports combined can form SATA Express ports...
It does not change how the PCIEx configuration should be "counted" anyway.
Then again, there has never been a really clear explanation from AMD how they do things so...
However, two of the SATA ports have so far, been from the CPU, with the other 4-6 ports being from the chipset (yes, some boards have eight native SATA ports).
But I guess we'll see soon enough how it plays out.