Everything has sped up, and up until now, I wasn't having any problems, so I assumed I had done it properly. Then, I went to fire up GTA IV, which I run through Steam, and it froze before I could even get into the game. I had to CTRL + ALT +DLT to get out of the game.
Remember, I enabled AHCI after the Windows installation. I had heard that it could be problematic, but up until now, everything had been going smoothly.