I've already purchased these two and im fairly certain they are good for gaming, also i play all genres of games.
Cable:
http://www.amazon.co.uk/gp/product/B015PRN040?psc=1&redirect=true&ref_=oh_aui_detailpage_o00_s00
Monitor:
http://www.scan.co.uk/products/27-acer-b276hk-4k-ips-led-monitor-3840x2160-6ms-300cd-m-100m1-speakers-grey-dp-hdmi-dvi
Cable:
http://www.amazon.co.uk/gp/product/B015PRN040?psc=1&redirect=true&ref_=oh_aui_detailpage_o00_s00
Monitor:
http://www.scan.co.uk/products/27-acer-b276hk-4k-ips-led-monitor-3840x2160-6ms-300cd-m-100m1-speakers-grey-dp-hdmi-dvi