AMD’s dual-GPU Radeon HD 6990 launched 15 years ago — power, heat, and noise monster was crowned the fastest graphics card in the world
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AMD released the Radeon HD 6990 in March 2011.
The card used two Cayman XT GPUs on a single 12-inch, dual-slot PCB with two 8-pin power connectors.
It shipped with 4GB GDDR5 memory (2GB per GPU), 3072 stream processors and a combined 5.28 billion transistors, built on a 40nm process.
Stock GPU clock was 830 MHz with overclocking up to 880 MHz; TDP was 375 W and OC modes could push power to 450 W.
It launched as a flagship product priced at $699.