Gigabyte private event leaks X570 launch date? AMD Matisse According to the slide posted at Gamer.com.tw, AMD is planning to introduce Matisse-based chipset already at Computex. The slides have Gigabyte watermarks. This X570 chipset would be the first to support PCI Express Gen 4, a technology supported by Zen 2 and 7nm Vega. This is interesting because AMD was not very eager to confirm that consumer parts, such as Ryzen or Radeon RX, would also support PCIe 4.0.