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 - Windows Vista 1 Million Digits: sec Ranking Intel Core i7 920 13.516 Intel Core i5 750 15 Intel Core 2 Duo E8500 14.8 Intel Core 2 Duo E8400 15.5 AMD Phenom II X4 965 Black Edition (125W) 20.4 AMD Phenom II X4 955 Black Edition 21.699 AMD Phenom II X4 910e 26.239 AMD Phenom II X3 720 Black Edition 24.398 AMD Phenom II X2 555 Black Edition 21.653 AMD Phenom II X2 550 Black Edition 22.24 AMD Athlon II X4 635 22.6969 AMD Athlon II X4 620 29.749 AMD Athlon II X3 435 27.5 AMD Athlon II X2 250 25.865 AMD Athlon II X2 240e 27 8 Million Digits: sec Ranking Intel Core i7 920 173.92 Intel Core i5 750 175.99 Intel Core 2 Duo E8500 190.538 Intel Core 2 Duo E8400 198 AMD Phenom II X4 965 Black Edition (125W) 255.16 AMD Phenom II X4 955 Black Edition 269.615 AMD Phenom II X4 910e 318.411 AMD Phenom II X3 720 Black Edition 301.923 AMD Phenom II X2 555 Black Edition 267.852 AMD Phenom II X2 550 Black Edition 275.19 AMD Athlon II X4 635 296.681 AMD Athlon II X4 620 324.164 AMD Athlon II X3 435 296.111 AMD Athlon II X2 250 288.464 AMD Athlon II X2 240e 302.125 16 Million Digits: sec Ranking Intel Core i7 920 384.78 Intel Core i5 750 413.643 Intel Core 2 Duo E8500 422.51 Intel Core 2 Duo E8400 426 AMD Phenom II X4 965 Black Edition (125W) 573.32 AMD Phenom II X4 955 Black Edition 606.372 AMD Phenom II X4 910e 714.823 AMD Phenom II X3 720 Black Edition 671.513 AMD Phenom II X2 555 Black Edition 601.988 AMD Phenom II X2 550 Black Edition 622.79 AMD Athlon II X4 635 661.736 AMD Athlon II X4 620 720.455 AMD Athlon II X3 435 656.112 AMD Athlon II X2 250 637.423 AMD Athlon II X2 240e 670.441

Single threaded performance is not a strong suit of the Phenom II X4 910e , which has had its core clock speed neutered in order to fit into its 65W thermal envelope. With just one 2.6GHz core trying to compete with faster and more compute-efficent processors, the Phenom II X4 910e is only able to place second-last here.

Super Pi Mod 1.5 XS - Windows 7 1 Million Digits: (sec) Points Ranking Intel Core i7 920 15.313 Intel Core i5 750 15.678 Intel Core 2 Duo E8400 15.553 AMD Phenom II X4 965 Black Edition (125W) 20.374 AMD Phenom II X4 910e 26.177 AMD Phenom II X2 555 Black Edition 21.206 AMD Athlon II X4 635 27.144 AMD Athlon II X4 620 29.828 AMD Athlon II X3 435 27.222 AMD Athlon II X2 240e 27.285 8 Million Digits: (sec) Points Ranking Intel Core i7 920 171.781 Intel Core i5 750 174.876 Intel Core 2 Duo E8400 196.529 AMD Phenom II X4 965 Black Edition (125W) 255.482 AMD Phenom II X4 910e 319.991 AMD Phenom II X2 555 Black Edition 268.32 AMD Athlon II X4 635 296.868 AMD Athlon II X4 620 324.667 AMD Athlon II X3 435 296.713 AMD Athlon II X2 240e 303.639 16 Million Digits: (sec) Points Ranking Intel Core i7 920 375.969 Intel Core i5 750 414.725 Intel Core 2 Duo E8400 441.066 AMD Phenom II X4 965 Black Edition (125W) 573.395 AMD Phenom II X4 910e 712.541 AMD Phenom II X2 555 Black Edition 601.771 AMD Athlon II X4 635 656.839 AMD Athlon II X4 620 719.676 AMD Athlon II X3 435 657.058 AMD Athlon II X2 240e 660.954

SuperPi also enjoys a very minor increase in speed in Windows 7, despite being a single-threaded benchmark.

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 (125W) 43.009 AMD Phenom II X4 955 Black Edition 45.115 AMD Phenom II X4 910e 55.101 AMD Phenom II X3 720 Black Edition 51.901 AMD Phenom II X2 555 Black Edition 45.708 AMD Phenom II X2 550 Black Edition 48.173 AMD Athlon II X4 635 49.873 AMD Athlon II X4 620 55.083 AMD Athlon II X3 435 49.669 AMD Athlon II X2 250 49.827 AMD Athlon II X2 240e 53.367 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 (125W) 21.481 AMD Phenom II X4 955 Black Edition 22.682 AMD Phenom II X4 910e 28.158 AMD Phenom II X3 720 Black Edition 26.256 AMD Phenom II X2 555 Black Edition 23.415 AMD Phenom II X2 550 Black Edition 24.242 AMD Athlon II X4 635 25.132 AMD Athlon II X4 620 27.722 AMD Athlon II X3 435 25.287 AMD Athlon II X2 250 25.007 AMD Athlon II X2 240e 27.019 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 (125W) 14.493 AMD Phenom II X4 955 Black Edition 15.46 AMD Phenom II X4 910e 18.997 AMD Phenom II X3 720 Black Edition 17.936 AMD Athlon II X4 635 17.207 AMD Athlon II X4 620 18.846 AMD Athlon II X3 435 17.58 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 (125W) 11.123 AMD Phenom II X4 955 Black Edition 11.84 AMD Phenom II X4 910e 14.462 AMD Athlon II X4 635 13.011 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 (125W) 11.123 AMD Phenom II X4 955 Black Edition 11.84 AMD Phenom II X4 910e 14.462 AMD Phenom II X3 720 Black Edition 17.936 AMD Phenom II X2 555 Black Edition 23.415 AMD Phenom II X2 550 Black Edition 24.242 AMD Athlon II X4 635 13.011 AMD Athlon II X4 620 14.585 AMD Athlon II X3 435 17.58 AMD Athlon II X2 250 25.007 AMD Athlon II X2 240e 27.019

wPrime 2.0 is a great multi-threaded benchmark for testing the number crunching capabilites of a processor. It 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 results to pay attention to are the final block of results - the all threads results.

With all of its threads enabled, the Phenom II X4 910e is able to partially make up for its embarassing SuperPi results. Putting all four of its cores to use results in competitive scores, but its still can't quite beat its less expensive but higher-frequency little cousin, the Athlon II X4 635.

wPrime 2.0 - Windows 7 32 Million Digits (1 thread): (sec) Points 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 (125W) 42.073 AMD Phenom II X4 910e 54.616 AMD Phenom II X2 555 Black Edition 46.91 AMD Athlon II X4 635 50.84 AMD Athlon II X4 620 54.509 AMD Athlon II X3 435 50.607 AMD Athlon II X2 240e 51.636 32 Million Digits (2 thread): (sec) Points 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 (125W) 21.684 AMD Phenom II X4 910e 28.267 AMD Phenom II X2 555 Black Edition 22.244 AMD Athlon II X4 635 25.022 AMD Athlon II X4 620 28.546 AMD Athlon II X3 435 25.163 AMD Athlon II X2 240e 26.707 32 Million Digits (3 thread): (sec) Points Ranking Intel Core i7 920 16.984 Intel Core i5 750 16.629 AMD Phenom II X4 965 Black Edition (125W) 14.633 AMD Phenom II X4 910e 19.11 AMD Athlon II X4 635 17.067 AMD Athlon II X4 620 18.813 AMD Athlon II X3 435 17.487 32 Million Digits (4 thread): (sec) Points Ranking Intel Core i7 920 13.047 Intel Core i5 750 12.698 AMD Phenom II X4 965 Black Edition (125W) 11.404 AMD Phenom II X4 910e 14.711 AMD Athlon II X4 635 13.26 AMD Athlon II X4 620 14.743 32 Million Digits (all thread): (sec) Points 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 (125W) 11.404 AMD Phenom II X4 910e 14.711 AMD Phenom II X2 555 Black Edition 22.244 AMD Athlon II X4 635 13.26 AMD Athlon II X4 620 14.743 AMD Athlon II X3 435 17.487 AMD Athlon II X2 240e 26.707

Windows 7 doesn't have much an effect on wPrime scores, this theoretical test won't be affected much by the choice of operating system.