* 666 million transistors on 55nm fabrication process * PCI Express x16 GPU bus interface * 256-bit GDDR3/GDDR4 memory interface * Microsoft® DirectX® 10 1 support * Shader Model 4.1 * 32-bit floating point texture filtering * OpenGL 2.0 support * ATI Avivo™ HD Video and Display Platform * HDMI output support * ATI PowerPlay™ * ATI CrossFireX™ Multi-GPU Technology