If you're unsure about your computer handling TF2 just play the game in DirectX 8.1 mode. The specular effects will be gone and you'll get circle shadows, but due to the art style the game will still look good and it'll run fast even on integrated cards.
At that settings it runs at ~40 fps on a freaking Radeon 9200. Just make sure you have 1GB or more of RAM, Source games love their RAM and can behave strangely if there isn't enough of it.
At that settings it runs at ~40 fps on a freaking Radeon 9200. Just make sure you have 1GB or more of RAM, Source games love their RAM and can behave strangely if there isn't enough of it.