Super Pi is a program capable of calculating all the decimals you want of the pi number. If you choose to obtain a high number of decimals, the computer will require a lot of time to process the operation, aspect that leads this tool to be used also to test the computer equipment.
Before clicking the Calculate button you have to choose the total decimals you want to get. If you define a small figure, your PC will have no problems when carrying out the operation, but if you opt for a large number of decimals, you will put the computer's capacities to the limit. In this way you will be able to check the performance that it is able to offer.
Super Pi can obtain an infinite number of decimals from the pi number, although you will only be able to do so if the PC processor has a very high power.