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AMD X570 chipset block diagram reveals PCI Express 4.0 support

Posted on Tuesday, May 21 2019 @ 15:22:37 CEST by

A block diagram of the AMD X570 chipset popped up online. This is the first Socket AM4 chipset that was designed in-house by AMD, the previous chipsets were created by ASMedia. The new design has PCI Express 4.0 support and has a total of 24 lanes. Four are reserved for the chipset bus, another four for M.2 and the remaining 16 are for the graphics slots.
AMD X570 overcomes the greatest shortcoming of the previous-generation X470 "Promontory" chipset - downstream PCIe connectivity. The X570 chipset appears to put out 16 downstream PCI-Express gen 4.0 lanes. Two of these are allocated to two M.2 slots with x4 wiring, each, and the rest as x1 links. From these links, three are put out as x1 slots, one lane drives an ASMedia ASM1143 controller (takes in one gen 3.0 x1 and puts out two 10 Gbps USB 3.x gen 2 ports); one lane driving the board's onboard 1 GbE controller (choices include Killer E2500 or Intel i211-AT or even Realtek 2.5G); and one lane towards an 802.11ax WLAN card such as the Intel "Cyclone Peak." Other southbridge connectivity includes a 6-port SATA 6 Gbps RAID controller, four 5 Gbps USB 3.x gen 1 ports, and four USB 2.0/1.1 ports.
Other specifications of the southbridge include two SATA 6Gbps ports (one switchable to first M.2 slot), four 5Gbps USB 3.x ports, and Azalia HD audio bus. The TDP of the X570 is said to be 15W, which is three times more than the 5W TDP of the X470.

AMD X570 block diagram

More details at TechPowerUp.



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