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Slow write speed with Force GS 240 GB: Plz help

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My Mobo: GIGABYTE GA-870A-UD3 Rev1.0 , latest BIOS

Sorry, its GA-770TA-UD3 (rev. 1.0)!

Force GS 240 GB (5.05A)

AHCI Enabled, plugged in SATA 3 Port.

Trim Enabled

Win 7 64


Its not a fresh installed windows, still 170 MB/s write speed seems kinda crappy.

Or are those speed ok!?


I also attached a screenshot of the device manager.


I tried the AMD AHCI Drivers and the Microsoft driver, doesn't change much.


I would be very thankful for hints on improving the speeds, especially write speed.



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Unless may be a typo which should say GSATA2_6 & 7 instead of GSATA3_6 and 7


According to the Gigabyte website,

There are 6x SATA 6Gb/s ports from the chipset. (Blue)

2x SATA 3Gb/s from the Gigabyte chip. (White)


What Revision is the motherboard?

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Did that, but made it worse - see screenshots plz.

Any other advise but buying a new mobo?


No, it is generally better. More consistent and better write performance. The Marvell controller has poor latency, which SSDs tend to care about.


You could get a new motherboard to extract the full performance of the drive, but you are unlikely to notice any improvement in real world performance so I would view it as a waste of money.


If you really wanted an overall upgrade, I'd probably suggest an i5-3470 on a H77 motherboard. Or a i5-3570K on a Z77 motherboard for overclocking.

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