3DMark is a benchmarking tool designed to evaluate the performance of computer hardware, particularly graphics cards and processors. It provides a series of tests that simulate real-world gaming scenarios, allowing users to compare their system's performance against others. The software includes various benchmarks tailored for different hardware capabilities, such as Time Spy for DirectX 12 performance and Fire Strike for high-end gaming PCs. Users can easily share their scores online, making it a popular choice among gamers and hardware enthusiasts for assessing and optimizing their systems.