I'm wondering if it will fit my board. I have an ASRock B250m-HDV: http://www.asrock.com/mb/Intel/B250M-HDV/index.asp
And I'm looking at this CPU: https://www.amazon.co.uk/Intel-Core-i7-7740X-4-30-2066/dp/B072KTRQ9G/ref=sr_1_1?ie=UTF8&qid=1514535814&sr=8-1&keywords=i7+7740x
I'm not really sure...