Radeon HD 3870 X2

The Radeon HD 3870 X2 (AMD) is a dual-GPU graphics card released on January 28, 2008, with a launch MSRP of $449. It is based on the TeraScale architecture and uses two R680 GPU chips manufactured on a 55 nm process. Each GPU has 640 shading units, totaling 1280 across both chips, and operates at a base clock of 825 MHz. The card is equipped with 1 GB of GDDR3 memory on a 256-bit bus, providing a memory bandwidth of 57.6 GB/s. It supports DirectX 10.1 and OpenGL 3.3, and connects via a PCIe 2.0 ×16 interface. The board power (TDP) is rated at 165 W. This card was designed for high-end gaming and multi-monitor setups, leveraging dual GPUs for increased performance.