Odd as it may sound, I actively enjoy trying to get the maximum performance from modest hardware. Not only does it save money, but it's also satisfying to do the tinkering and experimentation. I could afford to go out and buy a ready made top-spec PC every 12 months if I chose to, but I honestly enjoy tinkering too much, and i'd rather save the money for something else.
Seriously. Don't worry about the RX480's excess power draw. It's actually only slightly over spec and no hardware manufacturer on the planet is going to build kit that close - the warranty issues alone mean it doesn't make sense. You don't need to build durability obsolescence into computer components because they'll become outdated so fast, so most are built to last to avoid ELF and RMA issues, and are binned when they have years of service left in them. Including PSUs.
You have to understand. This spec is just an arbitrary spec (qualification, not specification) written down because there has to be one - it isn't some limit that if it's hit the motherboard bursts into flames or spontaneously reboots or something. It's simply a figure that is put in a spec as the minimum performance needed to be considered compliant with the standard. It's better if a card doesn't exceed it, but if it exceeds it by a modest amount nothing will happen unless some stupid git has built into the kit supplying the power (the PSU) a feature to detect the overdraw and limit it. Which I've never seen or heard of, as it wouldn't make sense to do it as you'd just get a reputation for building flakey kit.
Seriously. Unless you have a really, really crappy PSU that is really borderline (you know - the kind that comes with the case!), it'll be fine.
