Is there a time demo for HL2?

[chum]

Do I have to download something?

 

[Grumpy]

Various Websites use timedemos to bench video cards etc. What they do is record a game they play, the run that demo. There is no official timedemo sadly. For HL2 Benchmarking, the Official test is the CS : S Stress test which you access on the CS Source Menu