The latest mighty-mite PC to hit the Amazon sale shelf can hit 4.5GHz on the speedometer and run three 4K monitors, and it's at its lowest price now.

The DreamQuest mini PC (16GB RAM, 512GB storage), which typically retails for $190, is now available on Amazon for just $159.

Microsoft really doesn't want customers to upgrade older PCs, but there are workarounds for many models. Here's everything you need to know.