How to use the computer more slowly how to do? computer running slow solution

I've always felt like my computer is getting slower lately. So want to optimize, but the General software optimization has reached the limit, the streamlining system is not my style. So I began to look for problems like hardware. So I found a good thing--ahci.
AHCI (Serial ATA Advanced host Controller Interface) serial ATA Advanced Master interface/Advanced Host Controller Interface) is an interface standard developed by several companies under Intel's guidance, It allows storage drivers to enable advanced serial ATA features, such as native command queues and hot-swappable, and its research and development team includes Intel, AMD, Dell, Marvell, Mai, Microsoft, Red Hat, Seagate and Storagegear, and other famous enterprises.
It's simple to say. AHCI is a new interface specification that directs the system to improve efficiency (around 30%) and supports many features such as NCQ (Native Command Queuing). Increase the read speed. Reduce useless hard drive find time, times.

So how do you open him up?

1. Your motherboard is to support AHCI. You can see it in the BIOS.

2. Install the system at the same time as AHCI, so that you can automatically install AHCI driver (Win 7 auto install).

What do you think it's open?

We enter the system's Device Manager. Here we look at our storage device controller

Here we see that my machine has opened AHCI