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Community Manager

SSD 520 120GB small speed on SATA2


I have just bought new ssd 520 SSDSC2CW120A3 drive to my Samsung R580 laptop. Intel rapid technology software shows that my controller is: Intel(R) 5 Series 4 Port SATA AHCI Controller and that drive works in mode 3Gb/s. Strange thing is that HD tune benchmark shows average read speed of 170 MB/s. I believe that on SATA 2 this should be around 270 MB/s. I am right?


I tried to update bios, drivers and etc. but with no luck. Any help or suggestion would be very appreciated.

Below system info:

System Report

System Information


OS name: Microsoft Windows 7 Professional


OS version: 6.1.7601 Service Pack 1 7601


System name: SPOCK-PC


System manufacturer: SAMSUNG ELECTRONICS CO., LTD.


System model: R580/R590


Processor: GenuineIntel x64 Family 6 Model 37 Stepping 2 2.267 GHz


BIOS: Phoenix SecureCore(tm) NB Version 11JB.M044.20100622.hkk, SECCSD - 6040000

Intel® Rapid Storage Technology


Kit installed:


User interface version:


Language: English (United States)


Intel AHCI controller: Intel(R) 5 Series 4 Port SATA AHCI Controller


Number of SATA ports: 3


Driver version:


ISDI version:

Device Information


Disk on port 0


Port location: Internal


Status: Normal


Size: 112 GB


Serial number: CVCV2025084S120BGN




Firmware: 400i


System disk: Yes


Password protected: No


Disk data cache: Enabled


Native command queuing: Yes


SATA transfer rate: 3 Gb/s


Physical sector size: 512 Bytes


Logical sector size: 512 Bytes

Disk on port 1


Port location: Internal


Status: Normal


Size: 0 GB


Serial number: i1J3456789KLMNOP


Model: TSSTcorp CDDVDW TS-L633C


Firmware: SC00


System disk: No


Password protected: No


Disk data cache: Disabled


Native command queuing: No


SATA transfer rate: 1.5 Gb/s


Physical sector size: 0 Bytes


Logical sector size: 0 Bytes

Empty port


Port: 4


Port location: External

Kind Regards

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1 Reply
Community Manager

Ok, i did run ATO benchmark and results look good. I suspect that HD Tune uses unfortunate buffer size.