When you say"not fast" what are you comparing it to??
My first generation OCZ Vertex is slower in every way compared to any of the drives mentioned in this thread and yet I have boot in a few seconds and all my applications load very quickly. It uses an ancient Indilinx controller. This was in comparison to a single platter Samsung F3 500GB. I am using it in an H67 motherboard.
Try cycling the SSD through the SATA3.0 ports and even the SATA2.0 ports. You have anabled TRIM,disabled the page file,disabled defragmentation and disabled hibernation?? Checked that ACHI is actually activated?

