Inspiron 5675 RAM model

i just want to know the exact model of this PC's RAM so i can buy another 

Link:

https://www.currys.co.uk/gbuk/computing/desktop-pcs/desktop-pcs/dell-inspiron-5675-gaming-pc-recon-blue-10164631-pdt.html?store=2267&&istCompanyId=bec25c7e-cbcd-460d-81d5-a25372d2e3d7&istItemId=xmtqimtwlx&istBid=t&srcid=198&cmpid=ppc~gg~1010%20(PLA)%20WINDOWS%20DESKTOPS%20-%20Adaptive~1010%20(PLA)%20WINDOWS%20DESKTOPS%20-%20Adaptive%20ad%20group~Exact&mctag=gg_goog_7904&kwid=GOOGLE&device=c&ds_kids=92700032853135281&PLA=1&tgtid=1010%20(PLA)%20WINDOWS%20DESKTOPS%20-