AMD announced that it has started shipping the new 790GX graphics chipset targeted at gaming enthusiasts. The chipset features enhanced SB750 southbridge, ATI Radeon HD 3300 chip integration, scalable ATI CrossFireX graphics technology, and Phenom chips with higher overclocking thanks to the new 'Advanced Clock Calibration' technology.
The 790GX is slotted below AMD's existing 790FX chip, which is targeted at the high-end gaming segment. AMD claims the 790GX chip is the world's fastest motherboard GPU (mGPU), with Mark 3D Vantage entry mode scores in excess of 2900.
The new Advanced Clock Calibration technology allows 790GX chipset to overclock Phenom CPU systems at clock speeds higher than 3.0 GHz by "significant tuning enhancements" on the new SB750 southbridge for better performance. The SB750 southbridge has been introduced to the 790GX chipset for optimum performance with Phenom processor based systems.
The 790GX chip has built-in ATI Radeon HD 3300 GPU chip which offers scalable high-definition gaming performance on the latest DirectX10 games. The chip's performance can boosted further when paired with one or two ATI Radeon HD 4800 series graphics cards to scale up to a higher performance configuration. In 790GX the ATI Avivo HD offers full 1080p HD on performance config systems with support for the latest codecs like H.264 and MPEG-2 for better HD visuals. This chip uses the AMD Unified Video Decoder, which redirects HD playback to the GPU, rather than the CPU, and delivers a better visual experience without frames drops or lags.
The chipset also features AMD's Sideport 'performance cache' memory technology to boost the performance by 10 to 15 per cent and enable the single memory chip to run at speeds of 400Mhz and 533Mhz with a top speed of 667Mhz.
Support for AMD 790GX has been confirmed by major industry players like Asus, Foxconn, ASRock, Biostar Group, Gigabyte and MSI computers.