This is how I was introduced to Half-Life - I got it with my GPU and played Day One. Unfortunately I also don't recall which it was. I do recall I had a Voodoo

This is how I was introduced to Half-Life - I got it with my GPU and played Day One. Unfortunately I also don't recall which it was. I do recall I had a Voodoo, then moved to a TNT2 and then later a GeForce 2. The TNT2 came out well after Half-Life, so it must have been 3dfx at least.