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AMD Athlon-II X2-255 CPU ADX255OCGQBOX E-mail
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Written by Hank Tolman   
Monday, 29 March 2010
Table of Contents: Page Index
Features and Specifications
Closer Look: Athlon-II X2-255
Testing and Results
EVEREST Benchmark Tests
Passmark PerformanceTest
PCMark Vantage Benchmark Tests
SiSoftware Sandra
Video Game Benchmarks
Final Thoughts and Conclusion

Testing and Results

Before I begin any benchmarking or overclocking, I thoroughly stress the CPU and memory by running Prime95 on all available cores for 12 hours. If no errors are found, I move on to a gaming stress test. To do this, I use Prime95 again to stress the processor, while running an instance of FurMark's stability test on top of this. If the computer survives this test for 2 hours without lockup or corruption, I consider it to be stable and ready for overclocking. After achieving what I feel is stable overclock, I run to these tests again for certainty. The goal of this stress testing is to ensure the clock speeds and settings are stable before performing any benchmarks. I adopted this method from another writer here at Benchmark Reviews and it seems to do a great job of flushing out what only seem to be stable overclocks.


Once the hardware is prepared, we begin our testing. Each benchmark test program begins after a system restart, and the very first result for every test will be ignored since it often only caches the test. This process proves extremely important in the many gaming benchmarks, as the first run serves to cache maps allowing subsequent tests to perform much better than the first. Each test is completed five times, with the average results displayed in our article.

For our Athlon-II X2-255 review, the following test systems and comparison processors will be used. As was mentioned before, the Athlon-II X2-255 will be compared to older systems to judge its value as an upgrade option. We fully anticipate the the Athlon-II X2-255 to be the fastest processor in our test-bed for this review. If it is not, we would be disappointed in the performance it provides for its price. At $67, the Pentium Dual Core E5300 2.6GHz is very close in price to the Athlon-II X2-255, at $75 and 3.1GHz. We expect to see a better than $8 increase in performance between the two processors. The Core 2 Duo E6300 is an old Conroe processor running at 1.8GHz. We hope to see that the Athlon-II X2-255 provides a large performance increase, and thus an inexpensive upgrade opportunity, over the Core 2 Duo E6300.

Intel LGA775 Test System 1

  • Processors: Intel Core 2 Duo E6300 1.8GHz
  • Motherboard: MSI P965 NEO LGA775
  • System Memory: 2x2GB Corsair DDR2 ([email protected])
  • Video: MSI NVIDIA GeFORCE 9800GTX+
  • Disk Drive: SEAGATE Barracuda 1.5TB SATA
  • Optical Drive: ASUS DRW-24B1ST DVD Burner
  • PSU: 650W
  • Enclosure: NZXT GAMMA
  • Operating System: Windows 7 Home Premium x64

Intel LGA775 Test System 2

  • Processors: Intel Pentium Dual Core E5300 2.6GHz
  • Motherboard: Intel BOXDG41MJ LGA775
  • System Memory: 2x2GB Corsair DDR2 ([email protected])
  • Video: Intel GMA4500 On-Board
  • Disk Drive: Western Digital Caviar 320GB SATA
  • Optical Drive: Panasonic 8X DVD-RW
  • PSU: 650W
  • Enclosure: NZXT GAMMA
  • Operating System: Windows 7 Home Premium x64

AMD Socket AM3 Test System

  • Processors: AMD Athlon-II X2-255
  • Motherboard: ASUS M4A785TD-M EVO
  • System Memory: 2x2GB Patriot Gamer Series DDR3 ([email protected])
  • Video: ATI Radeon HD4200 On-Board with 128Mb Side-Port Memory (DDR3 [email protected])
  • Disk Drive: Western Digital 400Gb SATA
  • PSU: 650W
  • Enclosure: NZXT GAMMA
  • Operating System: Windows 7 Professional x64

Benchmark Applications

  • EVEREST Ultimate Edition v5.00.1650 by Lavalys
  • Passmark PerformanceTest v6.1
  • PCMark Vantage v1.0.2.0 by Futurmark Corporation
  • Resident Evil 5 Benchmark
  • Street Fighter 5 Benchmark



# Great read with one flawBrian 2010-03-30 06:41
I like the read. It had great set of info for my next build, but I see a small flaw in the test. You said in the description that the FSB was eliminated because then the data transfer will be a whole lot faster than with a FSB, but I would like to know since the E6300 FSB is 1066Mhz, and the E5300 FSB is 800Mhz, what would happen with the Intel processor with a FSB of 1333MHz? The tests are sound don't get me wrong, but I would like to see what will the outcome will be with this processor. I use both AMD and Intel at home, and I see a great difference between them. but I would like to know more when it comes with a higher FSB? Still a great read, a job well done.
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# Contributing EditorHank 2010-03-30 07:40
I'm sorry, but I am extremely confused by your comment. I don't know how it would be possible to eliminate the FSB. Also, if I were to use an Intel processor with an FSB of 1333MHz it would certainly be faster than the Athlon-II X2-255, considering the least expensive of these would be a Core 2 Quad at about $160 or so. We don't need benchmarks to tell us that the Core 2 Quad will come out ahead. If I'm way off and you are talking about something else altogether, could you rephrase you question for me?
Hope this helps,

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# RE: Contributing EditorBrian 2010-03-30 08:09
Thanks for the reply, to rephrase the question, there are dual core processors that have a FSB of 1333Mhz, i.e Intel E8500. Since this is just a dual core processor, how will something like the E8500 or the E6750 go against the Athlon II X2 which has no FSB?
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# RE: RE: Contributing EditorHank 2010-03-30 09:41
Ok, I see what you mean. The processors with a 1333MHz FSB would likely all outperform the Athlon-II X2-255. The increase FSB speed would make a difference, but so would the 4MB of L2 cache. The processors used in this review were picked to test the upgradeability of the Athlon-II X2-255, and also to show its performance relative to its price. Even the E6750 will run you nearly twice what the Athlon-II X2-255, so you can expect that it will do better. But will it do twice as well as the X2-255? It's all about what you are willing to spend, as well. Paired with a 785G motherboard, like in the review, the processor/mb combo is only $150. You would be spending that on just the processor for a 1333MHz Core 2 Duo, and you wouldn't get the Radeon HD 4200. :)
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# RE: RE: Contributing EditorHank 2010-03-30 09:50
I don't there is an Intel competitor that can match the performance of the X2-255 for the same price. I think to get a processor that will beat the X2-255, you need to look at the Pentium E6500, and even that might be close. The Core 2 Duos, even the E7500 at just over $100 will outperform the X2-255, and certainly the i3-530 at $120. You'd have to compare those, however, to the Phenom-II X2-555 or maybe the Athlon-II X4-630 to get a better idea of AMD/Intel matchup.
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# RE: RE: Contributing EditorBrian 2010-03-30 14:55
Well if you put it that way than that's actually more understandable, I was just wondering why the 1333Mhz dual core processor was not on the list for some reason. But thanks for the replies, it was still a very informative reading. :)
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# RE: AMD Athlon-II X2-255 CPU ADX255OCGQBOXJohn D mathis 2011-02-04 19:24
Intersting read, informative, factual, and utilitarian. I am contemplating an upgrade on my Velocity Micro lemon, w/Intel mobo, E6600 CpU, andhaving replaced the Mobo, video card, snd card, re-installed XP Home, several times over the three years, I look longingly at the AMD line in an Asus Mobo. It appears that AMD-Asus kit would be the way to go, based on the near 20 years my Compaq (AMD cpu) has lasted w/o a hitch.Caveat other than the Creative Snd Card, always a problem configuring. Couple that with not having to replace snd, video and Net card and the value goes way up. Doing the owrk myself, a no brainer with today's modular designs, makes the AMD a GREATER value. Bit more inot the Mobo, and still save about 50% over Intel's inflated prices and w/o the arrogance of their deaf "help desk". You guys are great, saved me a tone of money, aguish and KEEP up the good work.
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