Super Pi Mod 1.5	Source: SuperPI

SuperPI calculates the number PI to 1 Million digits in this raw number crunching benchmark. The benchmark is fairly diverse and allows the user to change the number of digits of PI that can be calculated from 16 Thousand to 32 Million. The benchmark, which uses 19 iterations in the test, is set 1 Million digits.

Lower calculation times are better. SuperPi is not multi-threaded.

Super Pi Mod 1.5 XS 1 Million Digits: (sec) Ranking Intel Core i7 920 13.516 Intel Core 2 Duo E8500 14.800 Intel Core 2 Duo E8400 15.500 AMD Phenom II X4 965 Black Edition 20.343 AMD Phenom II X4 955 Black Edition 21.699 AMD Phenom II X3 720 Black Edition (DDR2) 24.500 AMD Phenom II X3 720 Black Edition (DDR3) 24.398 AMD Phenom II X2 550 Black Edition 22.240 AMD Athlon II X2 250 25.865 8 Million Digits: (sec) Ranking Intel Core i7 920 173.920 Intel Core 2 Duo E8500 190.538 Intel Core 2 Duo E8400 198.000 AMD Phenom II X4 965 Black Edition 256.011 AMD Phenom II X4 955 Black Edition 269.615 AMD Phenom II X3 720 Black Edition (DDR2) 0 AMD Phenom II X3 720 Black Edition (DDR3) 301.923 AMD Phenom II X2 550 Black Edition 275.190 AMD Athlon II X2 250 288.464 16 Million Digits: (sec) Ranking Intel Core i7 920 384.780 Intel Core 2 Duo E8500 422.510 Intel Core 2 Duo E8400 426.000 AMD Phenom II X4 965 Black Edition 574.844 AMD Phenom II X4 955 Black Edition 606.372 AMD Phenom II X3 720 Black Edition (DDR2) 0 AMD Phenom II X3 720 Black Edition (DDR3) 671.513 AMD Phenom II X2 550 Black Edition 622.790 AMD Athlon II X2 250 637.423

The Phenom II X4 965 Black Edition is the best of the AMD processors tested in SuperPi at this point, but none of these processors can keep up with Intel's Core i7 or Core 2 Duo microprocessors. Remember, SuperPi is not multi-threaded and lower times are best.

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 32 Million Digits (1 thread): (sec) Ranking Intel Core i7 920 51.156 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 X2 250 49.827 32 Million Digits (2 thread): (sec) Ranking Intel Core i7 920 25.828 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 X2 250 25.007 32 Million Digits (3 thread): (sec) Ranking Intel Core i7 920 23.297 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 32 Million Digits (4 thread): (sec) Ranking Intel Core i7 920 13.954 AMD Phenom II X4 965 Black Edition 11.639 AMD Phenom II X4 955 Black Edition 11.84 32 Million Digits (all thread): (sec) Ranking Intel Core i7 920 9.547 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 X2 250 25.007

wPrime 2.0 is a great multi-threaded benchmark for testing the number crunching capabilities of a processor. It fills in where SuperPi leaves off, and allows us to stress one core, or any number of cores up to the total amount in the processor. The CPUs benchmarked here range from two to four cores, so the most important result set to pay attention to is the final block (all threads).

While the 3.4GHz AMD Phenom II X4 965 Black Edition processor is easily able to bear the Intel Core i7 920 when both processors are using four threads at a time, the Intel processor also runs in HyperThreading mode, which lets it crunch eight threads simultaneously and achieve the best results overall. Comparatively speaking, the 3.4GHz Phenom II X4 965 Black Edition edges out a slight advantage over the 3.2GHz Phenom II X4 955 Black Edition CPU across the board.