The AMD Eyefinity-branded on- die display controllers were introduced in September 2009 in the Radeon HD 5000 Series and have been present in all products since. These are implemented by emulation on some TeraScale (microarchitecture) GPUs. OpenGL 4.x compliance requires supporting FP64 shaders.A GPU implementing TeraScale 3 version "Northern Island (VLIW4)" is found on "HD 6900" branded products.The "HD 6350" is based on TeraScale 2 "Evergreen".A GPU implementing TeraScale 2 version "Northern Island (VLIW5)" is found on all models except the "HD 6900" branded products.This article is about all products under the Radeon HD 6000 Series brand. Its direct competitor was Nvidia's GeForce 500 Series they were launched approximately a month apart. This also marks the end of the "Mobility Radeon" name in their laptop GPUs, keeping only the "M" suffix in the GPU model number to signify a Mobile variant. The logo for graphics products and technologies also received a minor makeover (using design elements of the 2010 "AMD Vision" logo). Therefore, the AMD brand was used as the replacement. Starting with this family, the former ATI brand was officially discontinued in favor of making a correlation between the graphics products and the AMD branding for computing platforms (the CPUs and chipsets). Some models are based on TeraScale 2 (VLIW5), some on the new TeraScale 3 (VLIW4) introduced with them. The Northern Islands series is a family of GPUs developed by Advanced Micro Devices (AMD) forming part of its Radeon-brand, based on the 40 nm process.
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