What is the Difference Between PCIe Gen 3 & Gen 4?

PCIe, Peripheral Component Interconnect Express, is used to connect your PC to your motherboard and other high-speed interface such as graphic cards, SSDs, Wi-Fi cards, and other hardware. There are many sizes for PCIe on your motherboard ranging from PCIe x1, PCIe x4, PCIe x8, PCIe x16, and PCIe x32. The letter “x” stands for the physical dimensions of the slot and how many lanes are in the expansion slot. Lanes tell you have fast data can travel. You can place a PCIe x1 into a PCIe X16, but not vice versa. PCIe version/gen 1 was introduced in 2003 with a transfer rate of 2.5 gigatransfers per second (GT/s). PCIe version/gen 2 was introduced in 2007 with a transfer rate of 5GT/s. PCIe version/gen 3 was introduced in 2010 with a transfer rate of 8GT/s. PCIe version/gen 4 was introduced
PCIe, Peripheral Component Interconnect Express, is used to connect your PC to your motherboard and other high-speed interface such as graphic cards, SSDs, Wi-Fi cards

PCIe Gen 4 SSDs perfom Better on Intel PCIe Gen 3.0 vs AMD Gen4/3

What are the differences between PCIE 4.0 and PCIE 3.0? - Quora

PCIe vs. NVMe: Are They the Same?

PCIe Gen 4 vs. Gen 3 Slots, Speeds

PCIe 4.0 vs. PCIe 3.0 SSDs Benchmarked

AMD Radeon RX 6400 Tested on PCI-Express 3.0

Your Ultimate Guide to Understanding PCIe 4.0

PCIe 4.0 vs. PCIe 3.0 GPU Benchmark

What is PCIe Gen4, and how is it different than PCIe Gen1/2/3?

Ensuring High Signal Quality in PCIe Gen3 Channels

Should you buy a PCIe 3.0 or 4.0 SSD?

NVIDIA GeForce RTX 4090 PCI-Express Scaling

What are the top uses of PCIe x1 Slots? – Premio Inc