Multitasking Scenario 2: File Compression

For our next test, we simulated what would happen if we performed two disk intensive tasks at the same time: zipping the source code to Firefox while importing a 260MB PST file into Outlook 2003. You'll note that this is a slightly modified version of the test that we originally created; we modified the test by archiving the Firefox source instead of a single smaller file. The reason for this is that we wanted a more realistic test (from a file size/count perspective) as well as the ability to better discern between contenders.

We ran the same Firefox and iTunes tasks from the last test again, and then did the following:

1) Open Outlook.
2) Start importing 260MB PST.
3) Start WinRAR.
4) Archive Firefox source.

WinRAR remained the application in focus during this test.

Here, we looked at two metrics: how long it took WinRAR to compress our test file, and how many emails were imported into Outlook during the time that WinRAR was archiving. Let's have a look at the results:

Multitasking Performance - Scenario 2

Remember that Windows' scheduler will give, by default, priority to the foreground task, which is why we see such a strong showing from the FX-55 here. But let's take a look at the other main task that ran in the background, the Outlook PST import:

Multitasking Performance - Scenario 2

Here, we see that while the FX-55 completed the archive task quicker than the dual core AMD CPUs, it basically got nothing done on the import emails task. Here, the advantage of dual core is clear, and once again, we see that AMD and Intel are very close in performance, but with Intel taking the crown. Interestingly enough, Hyper Threading is a major hindrance to Intel here as the Extreme Edition is significantly slower than the HT-disabled Pentium D 840.

The Real Test - AnandTech’s Multitasking Scenarios Multitasking Scenario 3: Web Browsing


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  • Viditor - Monday, May 9, 2005 - link


    Consider that an open invitation for dinner and drinks at The Rocks in Sydney Harbour.
    Ya know, Computex Taipei is coming up at the end of this month...and those circle pacific fares aren't THAT expensive... ;-)
  • nserra - Monday, May 9, 2005 - link

    I was looking at the transistor count of both AMD and Intel implementations of dual core and the look almost the same, despite intel uses 300mm vs amd 200mm. But my point is amd have ondie memory controler and intel Hyperthreading, all in all the processors “look” the same? Could i say this? (5% die for HT vs 5% die for Memory controller)

    Of course Amd have a better design since it drains less power and offers better performance.
  • Jeff7181 - Monday, May 9, 2005 - link

    We're definately interested in some preliminary overclocking results... well... I am anyway. Reply
  • Anand Lal Shimpi - Monday, May 9, 2005 - link


    Sorry about that, it's not intentional. I haven't published any overclocking tests for one major reason: the CPUs are still far away from being widely available; I don't want to give anyone the wrong idea based on the overclocking results of these early samples.

    If you guys are interested, I can publish some preliminary findings here however.

    Take care,
  • Anand Lal Shimpi - Monday, May 9, 2005 - link


    If I ever manage to get some time off, both Vinney and I would love to head down to Australia :)


    If the differences are negligible (around 3% or less) then I'd say that's due to normal variances in the benchmarks - at a quick glance, that's what the majority of single threaded benchmarks are showing. There are other situations where the scheduler may confuse the picture a bit, but for the most part I'm not seeing any evidence of that in these tests.


    I used 32-bit Windows XP Pro. At this stage the 64-bit version of Windows is pretty much useless for the desktop unless you've got some very specific 64-bit desktop apps that you're using.

    Take care,
  • Samus - Monday, May 9, 2005 - link


    Why are you continuing to neglect our questions regarding overclocking? Is there an NDA or something disallowing you to discuss the topic?

  • Murst - Monday, May 9, 2005 - link

    So, is there any explanation why, in many tests, the single core 2.4 w/ 1mb cache is significantly faster than then dual core 2.4 w/ 1mb per core?

    That just doesn't seem to make any sense. Seems like the design of the dual core is not as great as everyone was saying if it slows down applications by that much.

    It just seems like there shouldn't be a performance hit by adding another core with AMD's implementation, but there obviously is.
  • Viditor - Monday, May 9, 2005 - link

    tagger123 - as most (if not all) of the apps are 32bit only, I would guess it was standard XP... Reply
  • tagger123 - Monday, May 9, 2005 - link

    hi Anand

    Would like to know if you used windows xp or xp64 and if so - would it have any performance hit or increase on amd 64 x2
  • Viditor - Monday, May 9, 2005 - link

    "you going to hire anand as a consultant?"

    Nope...but I'll buy the first round if he and his lady ever hit Sydney...! :-)

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