No, not at all. Unless you use OpenGL for final rendering, which is not advisable for quality reasons and many times not even possible since many plug-ins don't support it, you will not see any speed gains.
It is as Mylenium says. The graphics card doesn't do much for After Effects rendering times, compared with RAM, CPUs, and hard disks.
See this page for several resources for improving performance in After Effects.
What's your point in posting that link?
Yes, OpenGL accelerates a few things. Not many. And it has drawbacks.
See this video for complete details:
If you have money to spend to improve performance with After Effects, spend it on RAM, fast hard disks, and CPUs before you spend it on a fancier graphics card.