That should be it. I put a temporary 40 GB HDD just to test different flavors of Linux and it was thinner than normally, what made it not fit properly. And yes, the term I was thinking about was "buzzing".
I have another of the PSUs and just checked. It's 365 W. Guess should be enough for what I have now. Btw, do you think it will be enough to add an RX 460 ?
Well, PCPP links are allowed, so here you go. That is basically the range of products that I can afford. I could also go for 128 GB, but not really into it. Well, the advice I need is regarding the different brands and longevity of each product. Performance is not much of an issue being that my PC is limited at SATA 2 speeds anyway.