PCI Express 3.0 vs 4.0

[b1ad3ua]

Hi. Im noob in hardware, can some1 please answer my question. I have Ryzen 5 1600, 8 gb ram 2666 MHz and Radeon RX560 2GB, and PCI Express 3.0 motherboard. I want to buy Radeon 6500XT (cos its cheap, like ~240$ for me) but its says PCE ex 4.0. Is there a point of buying it if my motherboard cant support PCE ex 4.0? I'm not planning to play 1080p, i usually play on low settings and something like 1280x768 resolution in almost every game (Skyrim SE/AE, Deep rock galactic, Hunt Showdown, maybe some games like Assassins Creed). Also want to get new GPU cos my old one is sometimes like 70-75C, even on my all low settings, low resolution, and i just dont want to stress in too much. So will this 6500XT work OK without PCI ex 4.0, cos still i'd like to have some FPS/performance boost wilth new GPU? Thanks in advence.

[HeyYou]

The card should be backward compatible. That will be a nice performance bump from your current card.