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corsair Force GT 120 with Gigabyte P55A-UD6 speed problem


mohsenabs

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I buy new corsair Force GT 120 SSD & plug that to sata3 socket in my gigabyte P55A-UD6 Motherboard. BIOS change to AHCI .Fresh Win 7 Install. Trim Ready OK.All Drive is Unplug (Only SSD). All the things in Windows 7 Change for SSD Dirve. My SSD Read Speed is 375 MB/s And Write Speed is 144 MB/s. Why ?

my MOBO Performance

http://www.newegg.com/Product/Product.aspx?Item=N82E16813128410

SSD Benchmark in SATA 3

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The problem is your SATA3 controller.

Your motherboard only supports SATA2 3Gbps natively but has a Marvel 9128 SATA3 6Gbps controller. But older chipsets that are the P55 and MOST X58 chipsets that have SATA3 6Gbps ports are using controllers that are on connected via a single PCI-E 2.0 lane and will usually peek out at around 300-400Mbps Read and about half that for Writes. Most Marvel 9XXX 6Gbps controllers don't provide the full speeds that most think they should.

 

To be perfectly honest you won't get any of the full speeds of the SATA3 SSDs like the Force3 or the ForceGTs or any SSDs that are rated for over 400Mb reads and writes. But at least you'll maxxed out the speeds you can with your motherboard with the drive.

 

All the Sandy Bridge chipsets should fully support 6Gbps natively.

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