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Western Digital Black vs. Blue Harddrive Test

I have 4 Western Digital 640GB HDDs. Two are Black Editions and two are Blue editions. I placed the same 720p movie on all 4 HDDs and played it. When I skipped around I noticed no lag in jumping in the Blue edition HDDs, but I saw a slight lag in the Black editions. I expected the Blacks to be either the same or better than the Blues. So I tested all four with HD tune, and thought I would ask the community if this is to be expected for these HDDs or if my blacks are somehow below average.

WD6401AALS-00L3B2
WD6401AALS-00L3B2
WD6400AAKS-00A7B0
WD6400AAKS-00A7B0

I used HD tune to test each hard drive.

Results:

#1) WD Black


#2) WD Black


#3) WD Blue


#4) WD Blue
2 answers Last reply Best Answer
More about western digital black blue harddrive test
  1. Best answer
    There's nothing in those results to indicate any kind of noticeable performance difference between the drives.
  2. Is there any other testing program I can use to distinguish if there is any real difference between these two types of drives?
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