GDDR3 is a type of graphics memory used in computer graphics cards and gaming consoles. It stands for Graphics Double Data Rate 3 and is designed to provide high-speed data transfer, which is essential for rendering images and video smoothly. GDDR3 memory is faster than its predecessor, GDDR2, and is commonly used in mid-range to high-end graphics applications. This memory type operates at higher clock speeds and has a wider data bus, allowing for improved performance in gaming and graphic-intensive tasks. While newer memory types like GDDR5 and GDDR6 have since been developed, GDDR3 played a significant role in the evolution of graphics technology.