owered by radeon® hd 4850 gpu innovative iceq 4 cooling technology 956 million transistors on 55nm fabrication process 800 stream processing units directx® 10.1 24x custom filter anti-aliasing (cfaa) and high performance anisotropic filtering ati crossfirex™ multi-gpu support for highly scalable performance use up to four discrete cards with an amd 790fx based motherboard pci express® 2.0 support