7 minutes ago, ekkelekkekt said:
I am wondering if the performance and sound differences are big between different models of the same card (i.e AMD RX 5700).
Or are the differences mostly visual?
Depends on which exact cards you compare.
In short, there are open air and blower style coolers. You will generally recognize blower style coolers by them having only a single fan on them, with a large shroud, like this:
Sometimes called 'reference cooler' design, since the reference videocards for the RX 5700 use this.
I'm going to go ahead and recommend you avoid these. They run hot and loud.
Only if you are looking to purchase a waterblock should you ever consider these.
Other than that, I will just link this list, which covers the best cooler options:
See the spoiler just below 'RX 57XX'. Pick an option from the top most tiers. Optionally look at some reviews, comparing your chosen options.