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Why is my ssd slow ?

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  • SSD
  • Benchmark
  • Storage
Last response: in Storage
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October 31, 2011 10:48:28 PM

I Have a hyper x 120gb sata 3 drive for my os (win 7 64bit) but it seems slow for such a drive that has been promised to deliver such high read/write speeds.

here is a benchmark I did.



They claim (and through benchmark tests around the internet) that read speeds are up to 525mb/s and read speeds up to 480mb/s. through this benchmark it doesn't seem that way.

here are my pc's specs
mobo: GA-Z68XP-UD4
CPU: core i52500k
GPU: HD 5870
psu: 850w quattro

I don't know what's wrong, all the latest drivers are installed, could it be the firmware on the SSD needs to be updated ? is it the mobo bios ? my dads sata 2 ocz SSD boots and operates way faster then mine.

thanks

More about : ssd slow

a c 545 G Storage
October 31, 2011 11:03:04 PM

Falcon20 said:
They claim (and through benchmark tests around the internet) that read speeds are up to 525mb/s and read speeds up to 480mb/s. through this benchmark it doesn't seem that way.


Advertised speeds are with ATTO benchmark software, not CrystalDiskMark.
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October 31, 2011 11:11:29 PM

still ssd's usually skip the welcome screen on windows boot up ? mine sits there for at least 5 sec ?
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a c 545 G Storage
October 31, 2011 11:18:12 PM

Only other thing I can suggest is to verify that the drive is connected in AHCI mode to port SATA3_0 or SATA3_1, not GSATA3_6 or GSATA3_7.
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October 31, 2011 11:23:29 PM

i did go into the bios and the Gsata3 crtl mode is in IDE and eSATA3 ctrl mode is in IDE ? so do i need to change them to ACHI ?
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a c 545 G Storage
October 31, 2011 11:30:14 PM

Whatever port your drive is connected to should be in AHCI mode.
If your drive is connected to a GSATA or eSATA port it will perform at slower speeds.
It needs to be connected to the Intel port in AHCI mode for maximum performance.
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October 31, 2011 11:31:15 PM

okay its connected to the z68 intel sata 3 port on the mobo
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November 1, 2011 12:57:07 AM

i did what you said but in the bios the only other option to change the sata crtl settings other than Esata and Gsata is the PCH sata control mode which i changed to ACHI, but then i reboot and system can't boot back into windows, so I had to change it back.

Do i need to change something in the registry in windows ?
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November 1, 2011 1:12:46 AM

I got it to boot proply just needed to change the reg value, much quicker now thankyou. :) 
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a c 545 G Storage
November 1, 2011 1:14:34 AM

Yes, you cannot change SATA modes after a Windows installation without a Windows Registry fix.

1. Boot into Windows in IDE mode and perform the Registry fix. Here's a link for instructions: http://www.ocztechnologyforum.com/forum/showthread.php?...

2. Shut down your pc after the fix.
3. Boot into BIOS and change the SATA mode to AHCI.
4. Save your BIOS settings and boot into Windows.
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