To of the biggest things when shopping a system are look for:
*A hard drive that spins at 7200 - 10,000 RPM / also look for SSD large enough to run the OS, this works great for quick boot and run.!
*The More memory the better, at least 6gigs "many systems allow expansion as they are mostly sold with a minimum amount. Expand to the MAXIMUM memory configuration.
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This is on board or incorporated on the motherboard, It uses system memory "the choice is usually limited". For browsing the web, working with docs, anything but Gaming this configuration is acceptable.
Some day I will look further into GAT - I looks like a great security option for business's using Google's cloud storage and docs. The package was developed from a need with no alternatives. (which is what has blessed me with the skills I posses today :)
In the cheat sheet below, you will find all the sizes you need to know when sharing images on social media, or adding images to your pages and profiles.