I'm getting the i5 Mac Mini and will probably stay at 8 gigs of RAM for a while. I buying this computer as a desktop replacement for media consumption and word processing for the next 6-8 years. I was dreaming of getting something like the LG 27UK850 4K monitor and scale it at 1440p so that everything is just the right size and the text is crispier that that of lower-res monitors (yup, you could drive the monitor at 4K and zoom the text but not every app is optimized for this). Then I started hearing about folks noticing UI lag with Mac Minis connected to LG UltraFine 5Ks. I then start reading and it seems that even Macs (or MacBooks) with better GPUs than the Mac Mini's lackluster Intel 630 have trouble working smoothly when you use a scaled-down res (unless you scale it down to 1080P which then makes things a bit too big). It just may be the case the Mac Mini isn't meant for 4K unless you run it in native res (a problem for me who works with apps like MS Word and who reads a lot of PDFs). As I'm in this for the long haul, I dare not risk getting issues with lag with a 4K monitor (a big investment, I might add) connected to the Mac Mini. I'm probably going to go for something like the brand new Dell U2719DC as it seems to have all the boxes ticked: USB-C connectivity, height adjustment and 27" at 1440P native res (I'm told the sweet spot for WQHD is the 27-incher). This should at least guarantee that GPU bottleneck that the Mac Mini doesn't come too apparent. Anyone else have similar thoughts?