The Dell OptiPlex 9020 comes in four form factors, which gives you plenty of sizes to choose from to fit your office's needs. We reviewed the largest, because it gives you the most power and opportunity to grow with your business. The quad-core 3.6GHz processor offers a lot of power to multitask and run all your necessary programs. However, the power supply unit is below average, which means you may need to upgrade it if you add components later.

To determine the best business computers, performance was the priority. To evaluate performance, we looked at the processor's PassMark score, an industry benchmarking score submitted by actual users. Then we analyzed the RAM and storage, followed by connectivity and expansion potential. The best business computer must be able to handle all of your necessary apps without slowing down, and it needs to be able to store all of your files. As a result, the Dell OptiPlex is among the best business computers available.

The OptiPlex 9020 has 8GB of memory, which is standard for an office PC. This is enough RAM to ensure your business can multitask without experiencing dips in performance. Most business-related software isn't data-intensive, so 8GB of RAM gives you ample room to run many programs at once. The one downside is that you can't upgrade the memory before purchase, which is important if you use data-intensive programs like 3D rendering or video editing software. However, you can manually install up to 64 GB of RAM to the motherboard, which gives you a lot of flexibility for future growth.