PCIe 3.0 has been around for so long that seeing it in a PC today almost makes the entire platform feel ancient. Think about this for a second. The very first PC I built in 2012 with the i7-3770K already had PCIe 3.0 support, and since then, we’ve gone through PCIe 4.0 and now have PCIe 5.0 on mainstream motherboards. In fact, current-gen GPUs from both Nvidia and AMD are all PCIe 5.0, so pairing one with a motherboard that’s still limited to PCIe 3.0 probably sounds like a terrible idea.