yeah, obviously I am aware I am only seeing averaged out power consumption on the UPS, and short spikes would be higher, so having a higher rated PSU is to ensure safety in those situations.

was just surprised how low my average consumption was
zen is very nice, its only weakness in my view is the weak overclocking, there is an issue with the way they split the 8 cores into 2 sets of 4 cores as well, but I think thats fixable with scheduler optimisations. the lowest zen SKU doesnt have that second issue.
On IPC zen is roughly equal to broadwell, we both have haswell which I expect is slightly weaker on IPC vs zen, so in my case I have a 4.3ghz haswell, which might be equivalent to maybe a 4.2 or possibly even 4.1ghz zen chip. So if they ever release new models capable of hitting 4.1-4.2 clock speeds then it becomes a setup that shouldnt be weaker on games compared to existing setup and have additional cores for tasks that love having more cores like rendering.
Personally I got no real desire to play at 4k, I only use 1440p currently because I got the monitor to have more workspace on my desktop. A lot of people see 1440p as a good sweetspot, as it is nowhere near as demanding as 4k.