This page tests the popup performance of your PC, Browser and PC

Are your PC, Browser, CPU und OS (operating system) fast enough to handle heavy JavaScript and DHTML scripts? Test it with BenchJS. BenchJS consists of 7 scripts testing the speed and performance of your PC and your browser's JavaScript engine such as calculation, image, popup, text and table manipulations. Results (time and ranking) will be displayed at the end of the 7 tests.

Test 2: caculate Primenumbers

Test 2 calculates and displays all primenumbers between 1 and 800.