The AnTuTu Benchmark tests are divided into three phases. In the first, the application will check the performance of the RAM on your device, through a series of continuous data streams that will test the endurance of your device.
In the second phase, AnTuTu Benchmark will simply verify how your Android terminal handles two-dimensional graphics. What it will do, is fill your screen with pixelated figures and see how the device endures.
In the third, and last phase, which is the most tough, AnTuTu Benchmark will check the endurance of your device with 3D graphics. For this, like a benchmark for a PC, you will see a 3D sequence.
AnTuTu Benchmark is a very useful tool to check the performance of your device, and will allow you to know if you can move a game or something else to your device.