Originally Posted by
Dashers
Intel Celeron G4930 3.2GHz. Built in GPU will decode HEVC up to 4K. £45
MSI H310M-PRO-VDH mATX mobo, supports the above CPU without BIOS update by the looks of things. £60
2x4GB DDR4-2400 RAM (see MSI web-site for tested modules) ~£40. To be fair, if you're really just wanting films, you could easy drop this to 4GB, but Windows 10 really benefits from more than 4GB.
Storage. SSD's are faster, but you don't get so much capacity. Depends on whether you're storing films or just streaming them. Note this motherboard doesn't havea M.2 slot. If you're just streaming then get yourself a 250GB branded SATA SSD for £30. If you're storing them, then you'll probably want to chuck in a 2TB (or more, whatever you haven't specified) hard disk for £70.