The SAPPHIRE HD 7970 is the first graphics card in the world to incorporate the latest generation of GPUs from AMD built in a 28 nm process & featuring the GCN optimized graphics processing architecture. The HD 7970 is the most powerful single chip GPU ever built. It has an internal structure with 32 compute units & a total of 2048 stream processors. It ships with a core clock speed of 925 MHz, & AMD Powertune technology allows enthusiasts to increase performance by overclocking. A 384-bit high speed memory interface with over 264 GB/second memory bandwidth connects to a large 3 GB array of the latest DDR5 memory.