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WD Caviar Black 1TB SATA 3 HDD

  • Hard Drives
  • SATA
  • Caviar
  • Western Digital
  • Storage
Last response: in Storage
October 20, 2011 10:30:07 PM

I bought a WD caviar balack 1tb SATA 3 HDD, afetr install it and install a fresh copy of win 7 there is no performance change in windows experience index, also hd tune info says that it's a sata 2 hdd. why is that for and what should i do, my mobo is ASUS M5A97 that has two SATA 3 ports on it and i enabled AHCI mode in BIOS.

Thanks in advance

More about : caviar black 1tb sata hdd

a b G Storage
October 20, 2011 11:35:58 PM

You won't see a difference in window experience index because Window set all mechanical HDD to have a max score of 5.9.

Are you sure your HDD is a WD1002FAEX not a WD1001FALS?

But sata 2 or 3, there will be little to no difference for mechanical HDD as the HDD cannot saturate sata 2 bandwidth.
a c 590 G Storage
October 21, 2011 12:04:52 AM

HDDs can be SATA 3 "compatible", but not SATA 3 "capable".

The buffer of your HDD (64MB) can transfer data at 6Gb/s but that's it.
The actual maximum Read/Write speed of your drive is 126MB/s.

No HDD can spin fast enough to saturate a SATA 2 port, let alone a SATA 3 port.

Here's a link to the spec sheet for your drive:
Related resources
October 21, 2011 6:59:55 PM

Yes my HDD is a WD1002FAEX, i just download the latest HDtune and it shows my HDD is a SATA 3 :)  so the only diffrence between my two seagate baracuda 7200.12 500 GB SATA 2 HDDs and my WD caviar black 1TB SATA 3 is the buffer size! thats it? what about SATA 3 performance improvements?

anyway thanks guys for your quick responses
a b G Storage
October 21, 2011 7:19:43 PM

SATA 3 has not shown to yield any improvement when using HDD. The increased buffer on the WD drive also does not seem to yield a clear performance boost. Other drives (Samsung F3 as an example) perform better or certainly equal to the WD drive without these features. WD is a good drive, it is just no enhanced much by these features.