thinking of adding more memory to the stock 8gb in my 3.5ghz 2017 iMac, in general I think it might help with a few slowdowns, also I tend to play civ vi or football manager and leave them open all the time. apart from that my Mac is for watching tv on, normal internet and email, Plex server, music, the odd other game both in Mac and bootcamp windows. looking on memory.co.uk they have a few options. firstly they have normal 'DDR4 PC4-9200 2400mhz' then for slightly higher prices, and only 8gb or more, they have Kingston HyperX impact DDR4. is that worth paying more for? then question is how much is 'enough'. I'm thinking just going to 16gb. my old iMac 2011 I took to 12gb and it seemed fine. is 16 enough? if I did go to 16gb, is it best to buy two 4gb chips for €60, meaning all my memory is equal 4gb, is it still the case that has faster? but meaning that if I ever wanted to get more memory id have to bin one or more of the chips. I could get 1x 8gb for €56 meaning I have one space but my memory isn't exact pairs. the website links to a video about it being better to have equal pairs but it seems well out of date and if you have 4 spaces does it still benefit to have two different pairs or do all 4 need to be the same? or I could spend €112 on two x 8gb giving me 24gb but is that overkill? and still it would mean there would be a mismatch of 2x4 and 2x8 in the machine. any advice appreciated.