In the past two years, the NVIDIA graphics cards were updated in full line, and then the AMD Ryzen series turned around every day to stimulate Intel to squeeze toothpaste. The PC market was very busy. On October 26, the PCI-SIG organization finally officially released the PCIe 4.0 specification, version v1.0.

Seven years have passed since the last generation of PCIe 3.0. This time, PCIe 4.0 has doubled the frequency and bandwidth directly, reaching 16.0GHz and 64GB/s respectively. It is expected that the bandwidth and speed of PCIe 5.0 will continue to double in two years. PCIe 4.0 still uses the previous generation 128b/130b standard coding. PCI-SIG emphasizes that high throughput computing such as multi card direct connection and AI will require the bandwidth and speed of new interfaces. However, PCIe 3.0 has not yet met the bottleneck in consumer products, and the new standard has little impact on ordinary consumers.

It is expected that Intel related motherboard chipsets will be available in the second half of next year at the earliest. AMD's PCIe 4.0 graphics card will have to wait until the fourth quarter of 2018, while Intel Optane SSD 900P has a PCIe 4.0 version that has been exposed.

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