wPrime 2.0	Source: WPrime

wPrime uses a recursive call of Newton's method for estimating functions, with f(x)=x²-k, where k is the number we're sqrting, until Sgn(f(x)/f'(x)) does not equal that of the previous iteration, starting with an estimation of k/2. It then uses an iterative calling of the estimation method a set amount of times to increase the accuracy of the results. It then confirms that n(k)²=k to ensure the calculation was correct. It repeats this for all numbers from 1 to the requested maximum.

Lower calculation times are better. wPrime is multi-threaded.

wPrime 2.0 - Windows Vista 32 Million Digits (1 thread): (sec) Ranking Intel Core i7 920 51.156 Intel Core i5 750 48.408 Intel Core 2 Duo E8500 50.466 Intel Core 2 Duo E8400 53.64 AMD Phenom II X4 965 Black Edition 42.808 AMD Phenom II X4 955 Black Edition 45.115 AMD Phenom II X3 720 Black Edition (DDR2) 52.354 AMD Phenom II X3 720 Black Edition (DDR3) 51.901 AMD Phenom II X2 550 Black Edition 48.173 AMD Athlon II X4 620 55.083 AMD Athlon II X2 250 49.827 32 Million Digits (2 thread): (sec) Ranking Intel Core i7 920 25.828 Intel Core i5 750 24.273 Intel Core 2 Duo E8500 25.49 Intel Core 2 Duo E8400 27.078 AMD Phenom II X4 965 Black Edition 21.656 AMD Phenom II X4 955 Black Edition 22.682 AMD Phenom II X3 720 Black Edition (DDR2) 26.537 AMD Phenom II X3 720 Black Edition (DDR3) 26.256 AMD Phenom II X2 550 Black Edition 24.242 AMD Athlon II X4 620 27.722 AMD Athlon II X2 250 25.007 32 Million Digits (3 thread): (sec) Ranking Intel Core i7 920 23.297 Intel Core i5 750 16.255 AMD Phenom II X4 965 Black Edition 15.211 AMD Phenom II X4 955 Black Edition 15.46 AMD Phenom II X3 720 Black Edition (DDR2) 18.219 AMD Phenom II X3 720 Black Edition (DDR3) 17.936 AMD Athlon II X4 620 18.846 32 Million Digits (4 thread): (sec) Ranking Intel Core i7 920 13.954 Intel Core i5 750 12.262 AMD Phenom II X4 965 Black Edition 11.639 AMD Phenom II X4 955 Black Edition 11.84 AMD Athlon II X4 620 14.5854 32 Million Digits (all thread): (sec) Ranking Intel Core i7 920 9.547 Intel Core i5 750 12.262 Intel Core 2 Duo E8500 25.49 Intel Core 2 Duo E8400 27.078 AMD Phenom II X4 965 Black Edition 11.639 AMD Phenom II X4 955 Black Edition 11.84 AMD Phenom II X3 720 Black Edition (DDR2) 18.219 AMD Phenom II X3 720 Black Edition (DDR3) 17.936 AMD Phenom II X2 550 Black Edition 24.242 AMD Athlon II X4 620 14.585 AMD Athlon II X2 250 25.007

wPrime can test all of the Core i5 750's cores at once. As the entry-level Core i5 model, the Core i5 750 doesn't have HyperThreading, which just keeps it from being able to compete with the likes of the AMD Phenom II X4 965 Black Edition.

wPrime 2.0 - Windows 7 32 Million Digits (1 thread): (sec) (sec) Ranking Intel Core i7 920 50.672 Intel Core i5 750 48.844 Intel Core 2 Duo E8400 53.93 AMD Phenom II X4 965 Black Edition 44.025 32 Million Digits (2 thread): (sec) Ranking Intel Core i7 920 25.531 Intel Core i5 750 24.571 Intel Core 2 Duo E8400 27.05 AMD Phenom II X4 965 Black Edition 21.964 32 Million Digits (3 thread): (sec) Ranking Intel Core i7 920 16.984 Intel Core i5 750 16.629 Intel Core 2 Duo E8400 0 AMD Phenom II X4 965 Black Edition 14.801 32 Million Digits (4 thread): (sec) Ranking Intel Core i7 920 13.047 Intel Core i5 750 12.698 Intel Core 2 Duo E8400 0 AMD Phenom II X4 965 Black Edition 11.375 32 Million Digits (all thread): (sec) Ranking Intel Core i7 920 9.766 Intel Core i5 750 12.698 Intel Core 2 Duo E8400 27.05 AMD Phenom II X4 965 Black Edition 11.375

Windows 7 show s the same excellent scaling as the Core i5 750's cores are loaded up. The total time is cut neatly into quarters as additional cores take on the processing load.