In an attempt to beat the green team and its leader the Green Goblin, ATI has got Batman & Robin onboard. They are now working on a proprietary machine that, if the rumors are true, will be called the Bat5870.
If the HD5870 is any indication of that machine's performance, it will undoubtedly give them an edge in that epic battle!
Seriously though, the image is a joke; I hope you guessed it. The idea behind this masterpiece probably came to mind in an attempt to find a use for the decorative vents present on the HD5870. Thanks to the user Heinz68 on NVnews forums for the excellent Photoshop job!