Today at HotHardware we're looking at a trio of videocards that have their sights set on the enthusiast market. Factory overclocked Radeon HD 5870 graphics cards from HIS, MSI, and Gigabyte have landed in our lab and its time for another round up. Some might glance over these products and wonder what the big deal is. Any time a new series of graphics cards are launched by ATI or NVIDIA, it is common for add in board (AIB) partners to tweak various features so that consumers have even more attractive options to choose from, beyond the original reference design. The graphics cards we have setup for testing here come with increased GPU and memory speeds, promising improved performance right out of the box. In addition, the heatsinks have been redesigned to provide improved cooling in order to handle the increased frequencies that are set for their graphics engines. Read on to find out how these speed demons perform when compared to one another, and if one of them has what it takes to be your next upgrade...