You can buy a brand new RX 6600 for that price, it won’t get you 2x FPS and you’d have to play on medium/low for comfortable FPS in 1440p, but it seems like it’s a good match for 3600, o have this GPU and it was bottlenecked a bit by my old 2600 but it’s not after I upgraded to 5600x, also the PSU might be too weak
https://www.dailymotion.com/video/x1t4rsf I think the author watched this