Today we're looking at a handful of graphics cards made specifically for enthusiasts that accept no compromise. These factory overclocked GeForce GTX 580 cards from Gigabyte, MSI, and ZOTAC represent the most powerful single GPU boards you can buy. Without a doubt, you'll be able to crank up the eye candy with one of these monsters in your rig. Read on to find out how well they perform and which of them have what it takes to be your next upgrade.

Each manufacturer has taken the original recipe for the GTX 580 from NVIDIA and spiced it up in order to provide additional performance and features. And when compared to reference design models which clock in at 772MHz core and 1002MHz memory, the trio of cards you see above sport overclocks that will undoubtedly translate into additional frame rates. How much of a boost can you expect to see?  That's what we're here to find out. But before we get to the benchmark numbers, let's take a closer look at each individual card to see what makes them stand out.