AMD has introduced the ATI Radeon HD 4890 GPU while Nvidia has announced the GeForce GTX 275 GPU.

The ATI Radeon HD 4890 GPU boasts 1.36 teraflops of compute power, GDDR5 memory, and engine clock speeds capable of nearly 1GHz, according to AMD.

By harnessing ATI Stream technology in combination with a number of ATI Stream-enabled applications, the ATI Radeon HD 4890 graphics card can help accelerate the conversion of standard and HD video into multiple formats for use on differing consumer electronics devices as well as harness AMD's second generation Unified Video Decoder (UVD 2.0) to play back smooth HD video, the company highlighted.

The ATI Radeon HD 4890 graphics card is supported by partners including Asustek Computer, Club 3D, Diamond Multimedia, Force3D, GeCube, Gigabyte Technology, Hightech Information Systems (HIS), Jetway, Micro-Star International (MSI), Palit Multimedia, PowerColor, Sapphire Technology, VisionTek and XFX. It is available immediately for US$249.

Nvidia's GeForce GTX 275 GPU is based on its GT200 architecture and features 240 processor cores operating at 1404MHz, 80 texture processing units, a 448bit memory interface, and an 896MB framebuffer. GeForce GTX 275-based graphics cards will have a price range of US$229-249, noted Nvidia.

The GeForce GTX 275 supports Nvidia PhysX technology for interactive gaming experiences, Nvidia Cuda for accelerated desktop applications, and Nvidia 3D Vision for stereoscopic gaming.

The GeForce GTX 275 will be available globally on or before April 14, 2009. Some regions are available now; other regions are available for pre-order. Current availability varies by region and the related graphics cards will be supported by the company's partners including Asustek, BFG, Colorful, EVGA, Gainward, Galaxy, Gigabyte, Innovision, Leadtek, MSI, Palit, Sparkle, Zotac, PNY, Point of View, and XFX.

AMD ATI Radeon HD 4890 graphics card
Photo: Company

Nvidia GeForce GTX 275 graphics card
Photo: Company

Related stories:

AMD readies more ATI Radeon 5000 series GPUs for 4Q09 (Sep 14)

Taiwan market: Nvidia launches 3D Vision glasses (Sep 11)

MSI launches AMD 785G-based motherboards (Aug 6)

Gigabyte quits board of GeCube, says paper (Jul 20)

Nvidia's 5-year plan coming to fruition as GPU compute goes mainstream, Q&A with Ujesh Desai, vice president of product marketing (Jun 2)

AMD launches a new 40nm GPU and a dual-core Athlon Black Edition CPU (Apr 29)

Taiwan market: Sapphire-brand graphics cards available in May (Apr 24)

Taiwan market: Graphics market to enter price war in 2Q09 (Apr 17)

Sapphire to enter Taiwan graphics card market (Apr 16)

AMD to use Samsung memory to fill Qimonda supply gap, says HKEPC (Apr 8)

Taiwan graphics card shipments from 2006-2009 (Mar 16)

Leadtek unveils Nvidia Quadro graphics family additions (Apr 1)

AMD to launch entry-level desktop platform before September (Mar 31)

Albatron launches a PCIe x1-based graphics card for IPC market (Mar 17)

AMD ships 50 millionth GPU to Nintendo for Wii (Mar 12)

Integrated graphics chip market to disappear by 2012, says Jon Peddie Research (Mar 6)

GPU shipments dive in 4Q08, says JPR (Feb 2)