The HD 5770 graphics cards is one of those rare products that offers the end user an almost perfect price to performance ratio. For somewhere around $160, you can get a card that will produce good frames per second in most games on the market and also includes new features such as DX11 support, Eyefinity and ATI Stream technology. So, how to do you take a product that offers as much as the HD 5770 does and make it even better? You crank up the performance. This is exactly what Diamond did with its latest offering based on the HD 5770 chip. This card, which is appropriately named the XOC (eXtreme OverClocked) version, comes with the core clocked in at 930MHz and the memory at 1300MHz, which is an 80MHz increase on the core and 100MHz increase on the memory, over the reference design. With these faster clocks, this card will achieve higher frames per second than the lower clocked versions and do so right out of the box, without additional tweaking. Just how much performance the additional clock speeds will yield though, is what I intend to find out as we delve into our in depth look at the Diamond HD5770 XOC.