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Why is my WD 1TB Black Slower than 2GB GREEN??

post #1 of 19
Thread Starter 
Hi guys

I noticed something strange today..

I have a 1TB WD Black performance HDD, in there i have a folder that's filled w/ lots of folders, and files, mostly videos..

Everytime i go into that folder, Windows has to spend roughly 600 miliseconds before it can list and sort the files..

now that never bothered me.. until today..

I have another internal DRIVE, a 2TB WD GREEN Low power type drive, w/c contains a complete backup of the WD 1TB Black .. and when i opened the same folder w/ the same files but on the low performance 2TB backup drive, the darn thing was INSTANT.. as if im opening a folder w/ barely anything in it..

so i decided to run some benchmarks on it and indeed my 2TB GREEN drive is faster than my 1TB BLACK ... *** moment..

here are some comparisons:
LEFT (1TB WD BLack Performance Drive) / RIGHT (2TB WD GREEN )
Screen_shot_2011-01-28_at_3.57.48_PM.png
Screen_shot_2011-01-28_at_1.25.27_PM.png


Ran tests on the 1TB WD Black drive and fragmentation is not significant, health is all OK..

is this normal?
post #2 of 19
The green drive will appear faster because the black drive has the overhead of Windows running off of it, so it appears normal. The green drive also will have inherently higher performance because 2TB disks have a much higher data density on the platters compared to the 1TB. More data will be read through the head in one turn of the disk compared to the 1TB. Anyway, it looks completely normal to me.

If I made a mistake in assuming Windows is installed on the black drive, the data density still is a factor. I don't know the exact effect of it but they in both circumstances they look fine to me.
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post #3 of 19
Thread Starter 
Hi Lemon,

Newp my windows OS is installed on my Phoenix Pro SSD DRive.. the 1TB WD BLACK is basically for my main DATA DRIVE where i work on always, w/ videos, images, music etc.. and 2TB is backup drive..

While the OS factor is out of the way, i guess it's that density thing then..

But now i'm asking myself, should I then use the faster 2TB drive as my main drive? lol
post #4 of 19
I don't see any serious reason of why does the Green outperform the Black.

Data density is a factor, might you want to make a random read/write test and check if the Black outperforms the Green? It should, and by pretty much a lot.

Access time is way better on the Black though, and that does matter quite a lot.
   
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post #5 of 19
Your current configuration may be better than switching around the duties. The black drive will have faster random read/write and seek times so it will be good for work that you are doing at the moment. The green drive has better sequential read/write so during a sequential backup run it will do better.
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post #6 of 19
You're Both Wrong.

It's the Cache Difference!

2TB = 64mb
1Tb = 32mb

This will make the Difference in Benchmarks.

Now if you had the Black Drive with Dual OB Processors it may be a different story... biggrin.gif
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post #7 of 19
Your drive looks slow to me. Mine has an OS on it also.

HDTune_Benchmark_WDC_WD1001FALS-41Y6A0.png?t=1296361576
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post #8 of 19
RMA time?
post #9 of 19
Thread Starter 
Quote:
Originally Posted by Gabe63;12193203 
Your drive looks slow to me. Mine has an OS on it also.

HDTune_Benchmark_WDC_WD1001FALS-41Y6A0.png?t=1296361576

Hi

Thanks for the reference.. but that may be because you're on better hardware than me right now..


i'm on Q9550 @ 3.8Ghz OC, and 1600Mhz 8GB GSKILL RAM, on Windows 7 x64 Pro.

While that looks spankin, You're on the new i7 architecture w/c improves on lots of aspects.. so i guess tha's just right given the differences...
post #10 of 19
faulty drive? or something is reading in the BG? I have 2 caviar blacks 1tb and my storage drive is faster than my OS drive too.
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