RAM is fairly cheap these days and quick and easy to fix, we’re at the point where you might as well fit too much. (though, I think perversely you might have to pay over the odds for yours). Try ebay/overclockers for used stuff, lots of upgraditis means lots of slightly older good quality kit for peanuts (I have 8gb of what used to be considered fast performance enthusiast’s RAM which I paid £20 for, because it’s the old DDR2 format)
Is it an overclockable board? I know some folks consider it somehow risky, and sometimes it’s not worth the hassle but I’m still using a pretty old Q6600 processor tuned to the eyeballs and I’d have long ago replaced it without the overclock (occasionally the mobo starts up without the overclocks and it’s immediately noticable just in everyday use never mind power applications). Not everything overclocks that well, but there’s usually untapped performance.
Also, I’m going to just assume you’ve already dusted it, right?