Hello,
Having experience in building scraping applications, we can DEFINITELY help you develop an additional functionality into your existing application built in Angular js and PHP that help scrape articles from news pages based on the term entered by user.
However, i would like you to address few things related to work scope:
+ How frequent you need to crawl?
+ Do you want to store or export info into any specific file format except pdf, csv, txt and doc file?
+ How many articles for each term you need to scrape?
+ Few more.
Please share the source code of the existing application so i could review it and know current status to assist you in a better way.
== Answer to you question,
Well, i would suggest you nothing under 8 GB to work a bot well because RAM matters when you will be asking to do perform multi threading tasks BUT yes, there are ways through which bot can work very well with a AMD 7790 1GB GPU. (Lets DISCUSS IT IN MORE DETAIL)
Please come over the chat for the further detailed discussion.
Thank You.
Look Forward.
Regards,
Tapan A.