May hinder? That's putting it politely. Lack of ram = one thing. A visit by pagefile.sys. For those who have never experienced that visit, lucky you.
In a nutshell, pagefile grabs a portion of your hdd as it own, making your hdd as a secondary ram source. When you consider how slow a hdd is compared to ram, and that data is trying to be read from a hdd that's already actively reading other data, things get abysmally slow. Say bye bye to fps, if dealing with large files you might as well go get a cup of coffee or even take a nap.
It's far, FAR better to have more ram than you'll possibly use than to skirt the edges of minimum necessity