Why is my ssd slow ?

[Falcon20]

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

 

[Dereck47]

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.

 

[Falcon20]

still ssd's usually skip the welcome screen on windows boot up ? mine sits there for at least 5 sec ?

 

[Dereck47]

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.

 

[Falcon20]

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 ?

 

[Dereck47]

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.

 

[Falcon20]

okay its connected to the z68 intel sata 3 port on the mobo

 

[Falcon20]

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 ?

 

[Falcon20]

I got it to boot proply just needed to change the reg value, much quicker now thankyou.

 

[Dereck47]

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?91808-Change-from-IDE-to-AHCI-after-Installation

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.