Sandisk Extreme 120gb ssd very slow speeds

Hi, I got my sandisk extreme 120gb ssd yesterday and I formatted it and installed a fresh install of windows 7 onto it. Trim is enabled as is achi. I did a benchmark test and I’m getting very slow speeds. I have a asus m5a78l-m/usb3 motherboard. Any help would be very much appreciated.

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the board you have is only a SATA 3Gb board. this speed is normal for SATA 3Gb.

Thanks for the reply. Can you tell me what type of motherboard you need to get better speed?

any MB that has a SATA 6Gb chipset. best performance is onlatest Intel SATA chipsets.