"I made my decision Monday night, and I committed to Louisville this morning," Williams told InsideTheVille.com Tuesday afternoon.
Williams made an official visit to Louisville last weekend and that trip sealed the deal for the Cardinals.
"Louisville was the best fit for me," he said. "I felt really comfortable on my visit. They have a lot of players from the south and I really like the speed of their offense and defense."
"I watched them practice during my visit, and I was really impressed with how up-tempo it was," Williams added. "I think Louisville will help get me ready for my ultimate dream to play professional football."
Williams played at Hutchinson C.C. in Kansas in 2004. This fall, he moved back to his home state of Georgia - Williams hails from Augusta - to play for Geogia Military College.
"He had a strong year for us," Georgia Military defensive backs coach Rob Merchant said.
But it was a friendship formed at Hutchinson that played a role in Williams' decision to attend Louisville next semester.
Williams said he'll sign the paperwork to make his decision official Wednesday. He'll enroll at U of L Jan. 8, and be able to participate in the Cardinals' spring practice.
"I want to come in and get my academics on track," said Williams, who made 35 tackles and 3 sacks in '05. "And I also want to get bigger and stronger for the season."
Williams said he thinks he'll fit in well in Louisville's defensive system.
"I see myself fitting in well because the defense they run at Louisville really free's up the defensive linemen to make plays," he said.
Williams also said the void created by Montavious Stanley's departure also factored into his decision. "I certainly took that into consideration because I only have two years left."
Williams chose Louisville over Kansas State, Oklahoma State, and Michigan State.