So, I'm looking around at parts to build a budget (hopefully no more than $600 for everything but Windows 10 and the graphics card - which promises to be the most costly part! :-\ ) gaming PC that will replace my old and rather slow 2 core and only 2 thread setup that is mainly limited by its absurdly low RAM limit of 4GB.

I don't need the very best performance, money is tight, and I usually only play older games anyway. Thus I'd really like to spend as little as possible, while still getting good performance with the older bargain bin/discounted older games I pickup, and the older MMOs I prefer. But I do want to future proof a bit. I don't want to find I can't play last year's title at all, a couple years from now, ya know? And I'd like the option to upgrade and add a few more parts (e.g. a CPU upgrade, more storage, a sata card to build a RAID from cheap drives, whatever the next generation of connector is down the road), later on as money becomes available.

Plus I'm the kind of user who has four windows of dozens of tabs open in his web browser. That kind of behaviour has become super slow on my old computer.

I notice that the Kaby Lake Pentium G4560 has what seems to balance surprisingly good performance for the Pentium brand (with 2 cores for 4 threads in total) with a low price, e.g. https://www.mightyape.co.nz/product/pentium-g4560-3-5ghz-3mb-cpu/26608288 (assuming it comes back into stock in a timely manner). So assuming that's a good bet, I thought I'd try to build around that. Which I especially like, as I fear I might have to wait another month or two for enough cash to purchase a decent graphics card like the GTX 1060, so at least I'll have integrated graphics in the meantime to play around with and try everything else out.

Thus I come to you fine folk, as it has been a very long time since I last built a PC, and I wonder what are good choices for the rest of the parts - case, motherboard, storage, RAM, PSU, fans - preferably aiming for a reasonably quiet setup, etc.

Your advice would be much appreciated. I don't care about fancy designs and lighting. I prefer an inoffensive look that won't be out of place in a home office.

Cheers in advance! :-)