Clarky110 :
Right now I am looking to build a PC for gaming and I'm quite paranoid over what my cpu temps will be like with this build https://uk.pcpartpicker.com/list/hVsKm8
You're right to be. The 7700K is notorious for outputting some high temps, especially with overclocks. A Ccryorig H7 is, however, a very good budget/mid-range cooling, and will cool the 7700K just fine. If you have money to spare, I would recommend a bigger air cooler like a Cryorig R1 universal, or a 240mm (or higher) AIO cooler like a Corsair H100i V2 or an NZXT Kraken X52 or X62 (which has very sexy RGB on the CPU block).