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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

Incremental Clock Boost, Minor Gain?

Like it's predecessors, AMD's 3.1GHz Athlon II X4 645 is an ideal computer processor for those who need good multi-threaded application performance, but have to live within the reality of a tight budget.

This chip costs $122USD, making it one of the most affordable quad-core processors out there and when it's installed into an AMD 890GX motherboard, the resulting PC platform as a whole offers a great mix of value and features. It's this total-system-value quotient where AMD continues to succeed.

While the Athlon II X4 645 is clocked at a fast 3.1GHz and does have four discreet CPU cores, it's worth remembering that this processor has no L3 cache whatsoever. When it's faced off against quad-core CPUs with L3 cache in number-crunching benchmarks the Athlon II X4 645 is unable to match the paste, not crunch raw numbers quite as quickly. It is most certainly of mainstream pedigree.

If we consider PCSTATS' processor benchmark set on the whole, the AMD Athlon II X4 645 processor does well within the mainstream processor segment, and generally speaking average overall as expected.

In certain multi-threaded benchmarks that allow the Athlon II X4 645's four cores to flex, the chip can offer competitive benchmark results against a Phenom II X4 and even Intel's more expensive Core i5 processor. Compared against flagship chips like the Intel Core i7 920 and AMD Phenom II X6 1090T, the Athlon II X4 645 is about 2/3rds the performance, in raw synthetic tests as little as one-half.

Sysmark 2007 puts it best - Intel's Core i7 920 and AMD's Phenom II X6 processors are very evenly matched in this system wide benchmark. The Athlon II X4 645 is a noticable notch down - a good 30-40 points on the Sysmark scale - but not so slow as to make the computer unwieldy slow in use.

To get the most value from a mainstream processor like tthe AMD Athlon II X4 645 that PCSTATS tested today, you're best off pairing it with motherboard that has integrated graphics. That means a motherboard built with the AMD 890GX, 880G or 785G chipset. In the context of overall system cost and feature set, it's hard to ignore what AMD brings to the table: DDR3 memory, HDMI/onboard video and potentially SATA6 and USB 3.0. Furthermore, like it's Intel competitors the AMD Athlon II X4 645 will happily run 32-bit or 64-bit Windows 7 operating systems too.

To sum it all up, AMDs quad-core 3.1GHz Athlon II X4 645 is a good mainstream CPU at $122 CDN ($122 USD, £61 GBP), especially for those looking at heavily multi-threaded workloads on a budget. It is by no mean the fastest quad-core offering in the AMD stable and its lack of L3 cache does put the CPU at a disadvantage in certain benchmarks, as you've seen. On the whole, this mainstream processor does offer a compelling blend of overall system performance particularly when paired with AMD's 890GX motherboard that's hard to beat for everyday general computing requirements.

Find out about this and many other reviews by joining the Weekly PCstats.com Newsletter today! Catch all of PCSTATS latest reviews right here.

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< Previous Page © 2017 PCSTATS.com CPU / Processors News»

 

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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