I currently use an HP 800 mini G4 with 8GB RAM, 256GB m2 ssd and i5 8500 processor (6 cores, 3.00GHz base, 4.1GHz turbo, UHD graphics 630, 65w TDP). I have 6x4MP cameras and 1x5MP unit recording at 4/5MP when triggered. Onboard graphics hardware acceleration is used, as is direct to disk h.264/5...