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Discussion Starter #1
specs: Intel i7 920 @ 3.6ghz
6gb ddr3 @1450mhz
Asus p6t deluxe v2
ATI 5850
OS: Windows 7 ultimate

My main OS hard drive is a Samsung F3 HD103SJ 1tb 7200rpm, connected via Sata 2. I have two other hard drives connected via sata 2, and three connected via USB, however I doubt these are causing the problem.

Performance has always been fast, and I usually have about 600gb free of my OS hard drive. Recently, I have been moving some big files to some folders that I created on my desktop, this reduced the free space to about 300gb free. At first I didn't notice a problem, however recently I have noticed that whilst transferring files over to the desktop folders, the whole computer's performance is very sluggish (e.g when trying to web browse.)

As an example, I copied about 6gb of files from C:/documents to a folder on my desktop, and the transfer rate was.... 15mb/s. This is awful considering I am copying files to the same drive, and the drive is internally connected via sata2. I can barely web browse as it keeps stuttering...what could be causing this slowdown? I have ran defraggler, it first said 32% fragmented but after running it (took hours and hours) it was 1% fragmented. Yet it's still slow, any ideas? Could it be because I am now storing large files in the folders on my desktop? or maybe something else?

edit: I have just tried to run "benchmark" on "HD Tune Pro" - for the read test I get "read error! test aborted" and for the write test it says "writing is disabled. To enable writing please remove all partitions
" I rebooted but get the same message

"file benchmark" results http://oi52.tinypic.com/29zyh3d.jpg

thanks
 

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Your drive could be dying. Try removing the files and putting them on a external drive. Then see if that speeds the computer up again.
 

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You left out one critical factor.

What web browser are you using?

I use Firefox. Every time I do anything at all, it's read/writing off the drive. This could be interrupting your large file copies with constant seeks to other places on your drive.

Also, as you fill your drive, the head has to move farther and farther away from the edge, making it feel more sluggish. Copying those larger files off to a second drive will keep your OS drive's head closer to the data it constantly has to seek to.

Edit: Yes, it could also be dying. Make sure you have copies of everything important to you, then continue diagnosing/experimenting.
 
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