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AMD Athlon II X4 645 3.1GHz Socket AM3 Quad-Core Processor Review

AMD Athlon II X4 645 3.1GHz Socket AM3 Quad-Core Processor Review - PCSTATS
Abstract: In this review PCSTATS is testing AMD's latest mainstream quad-core chip, the 3.1GHz Athlon II X4 645 processor. Architecturally speaking the Athlon II X4 645 is identical to the preceding Athlon II X4 635 model, except for a modest clock speed increase.
 80% Rating:   
Filed under: CPU / Processors Published:  Author: 
External Mfg. Website: AMD Sep 22 2010   A. Edmond  
Home > Reviews > CPU / Processors > AMD Athlon II X4 645

CPU Calculation Benchmarks: wPrime2.0

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.

PCSTATS Benchmark ReportwPrime 2.0 (multi-threaded) lower better
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 X6 1090T 40.14
AMD Phenom II X6 1075T 41.62
AMD Phenom II X4 970 Black Edition 40.778
AMD Phenom II X4 965 Black Edition 42.073
AMD Phenom II X4 910e 54.616
AMD Phenom II X2 555 Black Edition 46.91
AMD Athlon II X4 645 46.256
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 X6 1090T 20.282
AMD Phenom II X6 1075T 20.826
AMD Phenom II X4 970 Black Edition 20.718
AMD Phenom II X4 965 Black Edition 21.684
AMD Phenom II X4 910e 28.267
AMD Phenom II X2 555 Black Edition 22.244
AMD Athlon II X4 645 23.243
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 X6 1090T 13.79
AMD Phenom II X6 1075T 14.133
AMD Phenom II X4 970 Black Edition 14.229
AMD Phenom II X4 965 Black Edition 14.633
AMD Phenom II X4 910e 19.11
AMD Athlon II X4 645 15.849
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 X6 1090T 11.75
AMD Phenom II X6 1075T 12.607
AMD Phenom II X4 970 Black Edition 11.217
AMD Phenom II X4 965 Black Edition 11.404
AMD Phenom II X4 910e 14.711
AMD Athlon II X4 645 12.573
AMD Athlon II X4 635 13.26
AMD Athlon II X4 620 14.743
32 Million Digits (5 thread): (sec) Points Ranking
Intel Core i7 920 12.313
AMD Phenom II X6 1090T 9.717
AMD Phenom II X6 1075T 10.375
32 Million Digits (6 thread): (sec) Points Ranking
Intel Core i7 920 11.219
AMD Phenom II X6 1090T 8.547
AMD Phenom II X6 1075T 8.985
32 Million Digits (7 thread): (sec) Points Ranking
Intel Core i7 920 10.64
32 Million Digits (8 thread): (sec) Points Ranking
Intel Core i7 920 9.766
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 X6 1090T 8.547
AMD Phenom II X6 1075T 8.985
AMD Phenom II X4 970 Black Edition 11.217
AMD Phenom II X4 965 Black Edition 11.404
AMD Phenom II X4 910e 14.711
AMD Phenom II X2 555 Black Edition 22.244
AMD Athlon II X4 645 12.573
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

Wprime fills in where SuperPi leaves off, allowing PCSTATS 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 eight threads, so the most important result set to pay attention to is the final block (all threads).

With all four of its threads unleashed, the 3.1GHz Athlon II X4 645 is competitively paced against Intel's Core i5 750 (about dead even) and just three seconds off the low calculation time of the eight-threaded Core i7 920, Phenom II X6 1075T and 1090T CPUs.

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Contents of Article: AMD Athlon II X4 645
 Pg 1.  AMD Athlon II X4 645 3.1GHz Socket AM3 Quad-Core Processor Review
 Pg 2.  AMD Athlon II X4 645 CPU Overclocking Report
 Pg 3.  CPU System Benchmarks: Sysmark 2007
 Pg 4.  CPU System Benchmarks: PCMark Vantage
 Pg 5.  CPU Synthetic Benchmarks: SiSoft Sandra Processor
 Pg 6.  CPU Synthetic Benchmarks: SiSoft Sandra Memory
 Pg 7.  CPU Calculation Benchmarks: Super Pi
 Pg 8.  — CPU Calculation Benchmarks: wPrime2.0
 Pg 9.  CPU Calculation Benchmarks: ScienceMark2.3, WinRAR
 Pg 10.  CPU Rendering Benchmarks: Cinebench R10, Bibble 5
 Pg 11.  CPU Rendering Benchmarks: POV-Ray 3.7
 Pg 12.  CPU Rendering Benchmarks: SPECviewPerf 10
 Pg 13.  CPU Synthetic Gaming Benchmarks: 3DMark Vantage, 3DMark 06
 Pg 14.  CPU Gaming Benchmarks: Crysis, FEAR
 Pg 15.  Incremental Clock Boost, Minor Gain?

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