http://amibroker.com/products.html Amiquote will download eod and intraday data from Barchart.com and free eod data from quandl as well as other free sources listed on the link.
https://www.screener.reuters.wallst.com/stock/us/index?quickscreen=gaarp
There are lots of them, Reuters is free, most are paid services, just google. I like sharepad as it is html5 and runs in any browser. https://www.sharescope.co.uk/sharepad.jsp
IB data is snapshot 10 or more times per second not every tick so your pc or their servers will not get overloaded during a fast market. It means you will be able to trade when others cannot at busy times.
Do you want realtime or end of day? Google technifilter plus or the explorer in metastock will do it for end of day. Www.trade-ideas.com realtime for us stocks. The scanner in interactivebrokers TWS mosaic will do it for every market in the world, realtime, for free, just need to fund an...
Technology seems to have moved, low cost, low or no noise PC in a small case that supports 4*4k display. No need for expansion slots. Intel can only offer three displays if you have the correct motherboard otherwise two displays at a greater cost.