Yes, CPU+MB is usually a package deal (aside from AM4's relative stability, but even that did come with a lot of asterisks). RAM tends to last a bit longer, but

Yes, CPU+MB is usually a package deal (aside from AM4's relative stability, but even that did come with a lot of asterisks). RAM tends to last a bit longer, but yes, we are in the middle of an annoying transition period right now. Your old PSU might be insufficient for the new build, but it's not like 750W PSUs are a new thing (or particularly required if you're not doing a high-end build, even today). Power efficiency tends to yoyo around over the years. No, you absolutely do not "need" to upgrade your GPU, and certainly not immediately. Your old GPU will not be doing a worse job in the new computer than it was in the old one. And you can always replace it later on, should the need actually arise. I think a core part of the misunderstanding here is around expectations. The build plan for "a top-spec gaming computer" is going to look pretty different from "a top-spec dev computer that I can also game on". But, if anything, gaming has hit seriously diminishing returns in the last couple of years. It's quite hilarious and sad to see NVidia try to make real-time path tracing and 4K gaming into things, in a desperate bid to make GPU performance a relevant factor again.