Our research includes 227 expert total reviews for 29 best desktop pcs under $4200. The highest average score is 89%, while the lowest is 62% (a gap of 27%). There are about 8 reviews per product. Reviews come from sites like PCMag, Wired, and more. Click on a product to see more information (including which reviews were included). This list gets updated every few days as we routinely add the latest products.