What would be the cheapest graphics card i can get that i would be able to run Dota 2 on highest settings at 30 fps, 1680 x 1050p. AMD or NVIDIA, it doesn't matter. Im not interested in a new PC build, i just plan on sticking it in to my current PC. MY PC has an Intel i3 530, 4 GB DDR3 RAM, and a 220W PSU, but i am able to upgrade the RAM and/or PSU if needed. If an upgrade of the PSU is needed, please also state the recommended wattage.