LOL guilty confession. If it makes you feel any better I'm playing Half Life 1 on a once $350 GPU (GTX 970) right now. That game could be run flawlessly on my GeForce 8400 GS (which was a spectacularly weak GPU when it came out in 2009
). If you haven't played the Half Life series, it's a must btw. The Source version of Half Life 1 is the one to get though, the 1999 original is a real to run on a modern Windows. But it's an amazing series:
Half Life 1 --> Half Life 2 --> Half Life 2 Episode 1 --> Half Life 2 Episode 2 --> Portal 1 --> Portal 2 --> Hopefully someday Half Life 3