I'm just upgrading my PC from an AMD 6000+ system to Intel i7-3770, 8 GB Ram 1600 Corsair Vengeance, MB Asus P8Z77-V LX, SSD OCZ Vertex 4. But I want to keep my old ATI HD 4850 video card (despite the heat and noise). Mostly due to the budget, but I also feel I should wait some more for a new video card. I know that I won't take the maximum from games, but I only play GTA IV (which I could play normally with the previous system) and a few other games of that age, but could that slow down the entire system in general, not only for games?