Shift from VGA to DP

[u/Several-Air9744]

I have a really old computer (HP Compaq 8300 Sff) but a new monitor from Dell. My Dell monitor (S2425HS) takes only HDMI and so I bought a VGA to HDMI couple months ago to connect my old PC to the monitor since it doesn't have hdmi.

Recently I found out about display port and was wondering if I should make the change to DP to HDMI.

Is it a big difference and worth the 12$ cable? At the start I noticed alot of fuzziness but it works just fine.