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Some Background

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2:00 AM - 09/04/2008 by Patrick Schmid and Achim Roos

We’ve had a lot of coverage in the processor segment, mostly dealing with the latest products, but we also did a lot of analysis to compare power consumption and analyze the advances of AMD’s and Intel’s products when they introduce new steppings. (A stepping is an internal revision of a processor to fix known issues and slightly polish performance.) We checked how well processors scale with additional cores, looked at performance differences among various processor architectures running at the same clock speed, differences in various L2 cache sizes, and efficiency improvements over the years.

Highly Recommended Analysis Articles

The Truth about PC Power Consumption Idle and peak power only tell half of the story: in this article, we look at the total power consumption of AMD and Intel systems by examining the total power used for a given workload, which is the only way to properly measure power efficiency.

The Tale of Wolfdale: Power Requirements and Overclocking Analyzed Intel’s 45 nm Core 2 Duo E8000 is not only faster than the 65 nm E6000 series, it is also more efficient. We tracked the power consumed for a given workload and analyzed efficiency in depth, using different Intel processors running at 3.0 GHz.

AMD’s Athlon Stepping Improvements Improved processor steppings introduce improvements during a processor life cycle. We looked at three different Athlon 64 X2 5000+ processors using the F2, F3, G1 and G2 steppings, to determine the advances achieved in the move from 90 nm to 65 nm manufacturing.

GPU vs. CPU Upgrade: Extensive Tests What brings better results: purchasing a faster graphics card, or investing your cash in a more powerful processor?

Does Cache Size Really Boost Performance? We compared 2.4 GHz Core 2 Duo processors using 1 MB, 2 MB and 4 MB L2 cache to find out what difference cache size makes.

AMD CPU Efficiency Compared We took various AMD processors (Phenom, Athlon X2, Athlon 64 X2 and Sempron) running at the same clock speeds and analyzed their efficiency. Which one provides the best performance per watt ratio?

Intel Power Consumption Then and Now This article is similar to the AMD CPU efficiency story, but we looked at the Core 2 Quad, Core 2 Duo, Pentium D and Pentium 4 to see how efficiency improved when using a given workload and tracking power consumption in Watt-hours.

Phenom vs. Athlon Core Scaling Compared Since we wanted to know just about how good the Phenom really is, we looked at the Athlon 64 X2 and Phenom X4, running each chip with only a single core, and going all the way up to all available cores to see how well the Phenom’s Stars architecture scales.

Overclocking: Dual vs. Quad Core CPUs

What if Your CPU Cooler Fails? In earlier times, CPUs uses to die when they overheated, but that’s not always the case with modern AMD and Intel CPUs.

The Gigahertz Battle: How Do Today’s CPUs Stack Up? We compared various AMD and Intel processors, running them all at 2.4 GHz to check the performance levels of the various architectures.

Processor Performance Comparison

Please have a look at our CPU Performance Charts to get detailed performance data on as many as 102 different processors, from today’s Core 2 Duo/Quad and Phenom X3/X4, to the Athlon 64 X2 and Pentium D, and all the way down to first-generation Athlons, Semprons and Pentium 4 processors.

Desktop CPU Charts 2007

Mobile CPU Charts 2007

Talkback
nachowarrior 09/04/2008 8:29 AM
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ahmshaegar 09/04/2008 8:34 AM
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-4+

Just wondering if there's a little error on the game benchmarks page... the graph for Supreme Commander and the text don't seem to agree.

Anonymous 09/04/2008 8:38 AM
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little nit @ second last paragraph:

"are all examples showing that a 2.0 GHz quad core can certainly beat a sophisticated 3.16 GHz quad core"

should be 3.16 GHz dual core.

Legless Ethiopian 09/04/2008 8:57 AM
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-2+

The mainconcept analysis is wrong as well. Says the e8500 wins when it doesn't.

apache_lives 09/04/2008 9:26 AM
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Pukas71 09/04/2008 9:32 AM
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-2+

Good idea, but the article is such a mess. Never seen anything like that on Toms. It needs editing, and needs it now. Shame.

xx12amanxx 09/04/2008 9:36 AM
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-1+

I still can not concieve why they are comparing a 3.0+ dual core to a 2.0ghz quad?

What is the real point of this article?

Anonymous 09/04/2008 9:46 AM
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one thing that the authors forget that a typical use for a computer isn't just decompressing, surfing or gaming. The typical use is decompressing AND surfing AND using a resource hog like Skype AT THE SAME TIME! Oh, did I hear BitTorrent or multiple YouTube flash videos? How about them fancy Flash Ads, about 3 of them in every one of those 20-30 open tabs in the browser? Why don't you compare a quad core and a dual core in such an environment for general performance and responsiveness?

Anonymous 09/04/2008 9:47 AM
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-7+

Maybe in Windows the time of the Quad core or even the Duo core hasn't arrived yet, but in Linux the multicore processors have been supported for a lot longer and I wouldn't be surprised if you find many more apps in Linux that are natively multithreaded. How about rerunning your comparison in Linux and see who's the winner there where neither processor has the advantage. Both are well supported in Linux where as many of the tests in Windows lopsidedly tainted toward Intel products. In other words, try a scenario where the processors are treated equally by the testing software.

cangelini 09/04/2008 10:08 AM
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-3+

Thanks for the analysis catches, guys. They should have been, but weren't, caught during layout. I've adjusted the text to correctly reflect the benchmark results. Take care!

Mante 09/04/2008 10:12 AM
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-2+

I don't know why, but i would like to see an amd x2 @ 3.0 ghz running around those task.... It's cheaper and im really happy with it. Nice Article.

ravenware 09/04/2008 10:34 AM
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-1+

Quote :Intel’s fastest dual core processor.


It appears that the author is referring to the e8500 in the above statement, this would be incorrect considering the e8600 has newer stepping and a higher clock rate.

Quote :Supreme Commander shows the same results: it runs much faster on the Intel dual core than it does on AMD’s quad core. Since the performance difference is 80%, the clock speed difference alone isn’t enough to account for the tremendous difference.


The chart shows otherwise, something maybe awry with the report.

Quote :AMD Phenom X4 e9350


Should be AMD Phenom X4 9350e , "e" is misplaced.

Anyway, I would have liked to see what a Phenom 9950 and q6600 would have shown given the fact that their with in the same price point and would have shown the difference in efficiency and power.


amdfangirl 09/04/2008 1:38 PM
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nachowarrior :
good work on getting the benchmarks out. but a better comparison would be amd quad vs amd dual. due to the fact that amd has the only real quad core. I think most if not all of us know that most apps aren't ready to scale well up to a full quad proc. keep in mind that amd has four ACTUAL cores on their procs, not two logiced out to four as intel does. Get programs that are fully optimized to run on four acutal cores, the benchmarks will change quite a bit. I honestly don't recommend a quad core to anyone for the price at this point in time unless they plan on keeping their computer upwards of at least 4 years due to the fact that software takes too long to catch up to hardware. Multi core scaling on the software side just isn't there yet. Look to amd's dual core offerings for a good price/performance ratio at this point in time. but none the less... it's good to have some charts at this current point in time. thanks for the time put on the benchies... i'll click a sponsor or something. :-p



Sure it would, but the point of this article is to compare relatively similar costing processors with similar TDPs as a quad vs dual. Plus given how AMD is losing in the performance race clock for clock it emphasis on quad-core beating dual in some applications.

If it was AMD beating AMD everyone would be "so what?". Since it was (in some cases) AMD beating Intel, most go wow. The they compared the clockspeeds and wow. That really puts pressure on quad-core's performance. Great Work guys!=)

mitch074 09/04/2008 1:44 PM
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-3+

I have done some tests on my K8 X2. Moreover, I've taken some interest in Xvid development.
- current Xvid code isn't multithreaded: it is purely single core! In fact, when I encode two videos in parallel, I get almost no speed impact from the second encoding upon the first. If you want to try a multithreaded Xvid encoder, you must compile the 1.2 CVS version.
- I bet this benchmark uses Koepi's build of Xvid 1.1.3; as far as I know, he builds it against the Pentium Pro instruction set.
- I compared Koepi's build compressing some video under Windows (32-bit) and one built directly on my K8, in Linux 64-bit + SSE2 compressing the same video: encoding speed went up by a factor of 2.5.
- ever since most Xvid developers were hired by Miro to work on Miro's MPEG4 codec, Xvid development slowed down. Many developers got interested in x264 instead.

In short, using Xvid to compare AMD and Intel processors isn't as good as it used to be. Either that, or since Xvid is one of the few very CPU-intensive benchmarks out there, you should try and build it yourselves for each platform - just to be sure. It would also be interesting to benchmark current CVS build, to see how it scales with more cores.

Anonymous 09/04/2008 1:59 PM
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agree with REappear. for hardcore multitaskers, like myself, the quad is clearly a winner. a couple of msn/skype windows AND 10+tabs AND running torrent AND playing Supreme Commander -its my favorite:)- on a 20x20+ map with 4-6 players does the performance hit. in this case, 2g of memory (supcom eats up between 1.3 and 1.8) and 2g of ram isn't enough anymore.

and there is a low TDP quadcore from intel, my q6600, doing 9x266@1.008 :D. its a wicked thing to see a q6600 reaching only 43C on a prime test.

AMD should put much more cache on their chips, in most of the benchs this is the reason why their CPU is so slow. oh, and efficient doesn't mean it should be this slow too.

Anonymous 09/04/2008 2:00 PM
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--2+

2g of memory and 2 cores... sry

SgtBaker420 09/04/2008 2:15 PM
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"One fact remains clear above all: our comparison has shown that the time for quad core processors just hasn’t arrived yet."

Uhh...duh.

arkadi 09/04/2008 2:26 PM
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I think it is appropriate to run mixed benchmark with multiple tests at the same time. The outcome can be surprising. Working on quad systems fells different than on dual core,quads much more responsive if you run multiple tasks at the same time.

badboy4dee 09/04/2008 3:23 PM
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-2+

Good article and outcome as expected but I must agree when conducting tests we need to run multiple apps in conjunction for a true everyday experience. I would be interested in seeing how 2xquad cores fair on some NLE video editing apps like Premier & Vegas. Can we have some test ran on Linux? .... Please? Linux is becoming more and more popular to people so this would be refreshing to see. Don't worry bout the typo's we all make mistakes, it's no big deal. No worries, Keep on ROCKn THG!!

The Silent Majority

Anonymous 09/04/2008 3:38 PM
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I agree with REapper, a multi-tasking benchmark will shed much more light on real-world user concerns. I also wonder what the interest of power efficiency in desktop cores is? I know everyone wants to be green, but for most desktop users that I know, heat and power aren't that big of an issue.
When it comes to multi-cpu workstations and clusters, heat IS a issue.


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