Have been happily using Amibroker on two 27" monitors on a Apple Mac mini. CPU load runs at approx. 7%. The 2014 model natively supports two monitors (2560 x 1440 in my setup at the moment). I like these small computers - they do the job and they have no noise. And when travelling I can just put the computer in a small bag and use a hotel's TV with HDMI. Due to also having OS X I can easily restore within a short timeframe - in other words I've got backup build in. This after having had numerous laptops - I no longer am prepared to put up with small screens and having to squint.