AM5 platform gets three chipsets with differences in PCIe 5.0 support

By admin On May 23, 2022

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Three chipsets will be available for the AM5 motherboards that will be released in the fall of this year. In addition to the B650 and X670 chipsets, which follow the B550 and X570, there will also be an ‘extra high-end’ X670E chipset, with maximum PCI Express 5.0 support.

The chipsets for AM5 motherboards differ mainly in PCI Express 5.0 support, AMD’s desktop division manager David McAfee said. during the Computex keynote from the company. The total platform can provide a total of 24 PCIe 5.0 lanes, probably 16 lanes for the video card, four lanes for an M.2 slot and another four lanes for the connection to the chipset. The most luxurious X670E chipset, where the E stands for ‘Extreme’, can provide two slots for video cards and an M.2 slot for an SSD with PCIe 5.0 bandwidth. With B650, only the ssd works at PCIe 5.0 speed.

At the moment there are no video cards or SSDs for sale for consumers that support PCI Express 5.0. It’s not yet clear whether the next-generation video cards will take advantage of this, but AMD wants to end the lack of PCIe 5.0 SSDs by working with controller designer Phison and memory manufacturer Micron. Around the fall of the Ryzen 7000 CPUs, many brands would release an SSD based on hardware from those parties, with more than 60 percent faster sequential read speed than existing PCIe 4.0 SSDs.

Socket AM5 marks the switch for AMD from pins on the processor (pga) to pins in the socket (lga), as Intel has been using for years. The AM5 socket has 1718 pins, bringing power and signal integrity to a higher level than AM4 could. The socket can handle CPUs with a TDP of 170W. Thanks to the somewhat typical-looking heat spreaders of the Ryzen 7000 CPUs, compatibility with CPU coolers for AM4 is preserved.

All socket AM5 motherboards get DDR5 slots; the memory controller in the Ryzen 7000 processors is not backwards compatible with DDR4. The motherboards also get a maximum of four connections for monitors, because the new CPUs are all equipped with an RDNA 2-igpu. Both HDMI 2.1 and DisplayPort 2 are possible. Furthermore, manufacturers can equip their motherboards with Wi-Fi 6E via a controller for which AMD has collaborated with MediaTek.

Unlike the Ryzen 6000 laptop processors, the Ryzen 7000 desktop models will not support USB4. There will be a maximum of fourteen USB ports from the platform, of which a limited number can reach 20Gbit/s. The USB4 ports of AMD’s laptop processors reach 40Gbit/s.

Like the Ryzen 7000 processors, the AM5 motherboards based on the B650, X670 and X670E chipsets will also hit the market in the fall. AMD already showed the X670E top models from ASRock, ASUS, Biostar, Gigabyte and MSI. Prices have not yet been announced.