Sigh. Learn to read, people. That's why Kayden replied, and I quote:

Quote Originally Posted by Kayden View Post
Oops, right, thanks. I was thinking HD 2500, not the i5 2500 (sigh, product names).

Yeah, the i5 2500K is Sandybridge which can do GL 3.3. Ivybridge can do GL 4.
It's confusing, even to Intel developers.