The Radeon HD 4670 256MB GDDR3 GPU video card is designed specifically for the Apple iMac 21.5" A1311 model. With a chipset manufactured by ATI, this video card offers 256MB of memory size and utilizes GDDR3 memory type for enhanced performance. This product does not come with a cooling component, power cable, or any custom bundle, making it a straightforward and reliable choice for upgrading your iMac's graphics capabilities. Made in China, this ATI Radeon HD 4670 chipset GPU card provides a solid foundation for improved graphics rendering and gaming on your Apple desktop. Fast & Secure Shipping. (Item #2188)