Hot Hardware: Today we're looking at a trio of video cards designed to give enthusiasts like you the best bang for your buck. These factory overclocked GeForce GTX 400-series graphics cards are from Gigabyte, MSI, and Zotac. Each one has taken the original reference design from NVIDIA, and gone a step further so consumers have additional options to choose from. In addition to higher GPU speeds set by the manufacturer, they provide unique features such as improved cooling solutions, customized PCB layouts, and higher memory capacity. Read on to find out how well they perform, and if one of them has what it takes to be your next upgrade.