It's dynamically allocated. Note the word "available"?
It's not a source of speed loss. But if you have Vista Aero turned on, you'll find it to use your GPU and GPU memory and the games slow.
Find recipes for July 4 with these foodie apps
The Fourth of July means fireworks, fun and food. If you're planning on a barbecue this weekend, we've got the apps to help you find holiday-inspired recipes.