Thermalright designed the HR-03 specifically for NVIDIA 8800 video cards. An overclocked 8800 GTX can consume in excess of 300 watts of electrical power when fully loaded and the majority of that heat is released by the GPU. To handle the added heat load, the new HR-03 Plus uses a total of six heat pipes to cool the massive 8800 GPU (the original HR-03 used four heat pipes). When first released, the HR-03 Plus only supported the 8800 GTX cards but Thermalright now has a re-designed HSI heatsink, which allows the HR-03 Plus to work with GTS cards as well.



Link: PC Per