The guys as LinusTechTips have tested a row of video cards and compared the factory overcloked ones with the base referenced. Although there were some improvements, it didn’t really matter incredibly much.
If you can spare the money, then try to buy the next tier video card, but don’t just jump on to the flag ship 4K capable video cards if all you will do is 1080p video gaming. Seriously, try to make sure that you obtain the most bang for the buck while looking at the resolution your monitor currently uses. Try to obtain the best quality video gaming for THAT resolution.
Most of the flagship video cards are overkill if you will not use them for 2K or 4K gaming.
Learn from Jay how to match the video card you need to the display/monitor you use at home.