I'm currently using an ATI Radeon HD 4200 which works fine for Half Life 2. But upon mentioning my interest in Oblivion to my friend, he suggested upgrading to a GIGABYTE GV-N450D3-1GI GeForce GTS 450 for $100. I just want to get a second opinion on whether the card is worth the money because I already meet the minimum specs, but I'd like a smoother experience. Comments appreciated.