If you're planning to replace the 2012 i7 mini in the near future, you may want to consider the new models of the Mac Mini. They have been developed using newer processors, more RAM, and bigger storage options.
To increase general performance, decide if getting the highest amount of RAM you can afford is right for your needs. Having plenty of RAM will help you get the most out of your device or antigene. Your online activities, emailing, streaming Plex servers, and occasional video encoding will require racks of RAM.
To store your files and other media, you may want to buy a hard drive with a minimum of a 512GB SSD. Having so much space on your storage device will help improve performance and allow the device to function better.
If you need a more powerful chip, consider investing in an Intel quadcore Core i5 or i7 processor, as this will provide your tasks with the power it needs and help the device run smoothly.
It's also worth noting that the latest Mac Minis use an Apple Silicon M1 chip, which is also extremely energy-efficient and powerful. In general, it is important to look at your finances and your needs before buying a new Mac Mini, and choose the model that best suits your needs.