Second hand build?

[Moobert]

Hi all, I have the unenviable task of specing a second hand build that will cover 1080p gaming on a living room tv. Preferably at the highest possible graphical settings

For circa £500 would the best bang for buck be along the lines of i5/i7 with cheap mobo and cooler, 550/650w PSU, 8gb/16gb ram, 128ssd, 1/2tb hdd and GTX970/980. All obviously dependent on price etc. although I am gravitating towards a good price on the 980 and working around that

No need of windows, kb or mouse as I can provide these, however what sort of spec would you recommend, or have I hit the nail on the head?

 

[Vonhelmet]

I've just built an SFF pc for my living room with Haswell i5, 16gb ram, GTX 970, ssd for Windows and mechanical drive for steam. I had a Windows license already. It cost me about £450, with a good deal on the 970, which I got for £100 on the MM. It gets 80fps on the Shadow of Mordor benchmark with mostly top quality settings at 1080p.