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Windows 7: HDD transfer data very slow

25 Oct 2012   #1

Windows 7 Ultimate 32bit
HDD transfer data very slow

I have a WD Black 500GB
Worked fine for about 6 months . Thsn recently , i experienced a very slow transfer rate . Everytime i copy DATA from this drive to another drive . Its lower than 20MB/s despite the file size .
I tested with many software HD Tune Pro , CrystalDiskMark v.v.... SMART is very good . Althought the speed test Read / Write not so good but still above 80 MB/s most of the time .
Next problem is , i read that i should check if DMA is enabled or not . But i can't do it . In my Device manager , under the IDE ATA/ATAPI Controller , only 1 line : Intel(R) 7 Series/C216 Chipset Family SATA AHCI Controller . Nothing else .
Please help me

My System SpecsSystem Spec


 HDD transfer data very slow

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