Radeon X1900 XT

The Radeon X1900 XT is a high-end graphics card from ATI's X1900 series, launched in January 2006 with a suggested retail price of $549. It is built on the R580 GPU using a 90 nm fabrication process and features 48 shading units. The core operates at a base clock of 625 MHz. Memory is provided by 256-bit GDDR3, delivering a bandwidth of 46.4 GB/s. The card uses a PCIe ×16 bus interface and has a board power (TDP) of 100 W. It supports DirectX 9.0c and OpenGL 2.1, making it suitable for gaming and graphics applications of the mid-2000s. The Radeon X1900 XT was designed for use in desktop PCs with a PCIe ×16 slot and required a power supply capable of delivering sufficient wattage for its 100 W TDP.