AMD's Athlon 64 X2 4800+ & 4200+ Dual Core Performance Previewby Anand Lal Shimpi on May 9, 2005 12:02 AM EST
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Multitasking Scenario 2: File CompressionFor 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:
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:
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.