I am often asked about what kind of computers to use for trading and how many monitor.
My advise is simple, unless you are day trading use the least number of monitors and use the cheapest computers.
In my experience most machines don't last more than 3 years. So I buy the cheapest hardware I can get.
Currently I use one desktop PC and one laptop with added monitor. If I was not running this site and members site, I would be trading with just one computer.
People made money in the market before computers were around. More powerful hardware and more monitor are not going to make you more profitable trader.
More powerful setup idea will.
Instead of spending lot of money on hardware spend money and effort on finding more powerful setup ideas.