The ProDesk 400 G4 sports integrated Intel HD Graphics 630, 4GB of RAM, a 500GB hard drive, and a slim DVD burner. And if you need to expand down the road, making upgrades is a breeze.

• HP ProDesk 400 G4 Microtower PC Desktop for $449.99 (List price: $679) Measuring 6.69 inches by 13.3 inches by 10.79 inches, this miniature tower PC enjoys a 27 percent smaller chassis than HP ...