AMD today announced the availability of the industry’s preeminent performance desktop platform, the AMD 790GX. Packing a host of innovations, the AMD 790GX integrates advanced performance tuning for AMD Phenom processors, plus ATI Radeon HD 3300 graphics - the world’s fastest motherboard graphics processor (mGPU).The 790GX isn't the revolutionary shift that the 780G chipset was but instead is a new spin on the 780G. The number of stream processors remains the same and the core architecture but you do get a nice 200MHz bump from 500MHz to 700MHz in addition to a number of other tweaks and refinements. Sideport memory that was optional with the 780G is now a requirement also for the 790GX which should free up any memory bandwidth and capacity problems that you might run into with this board. The other major refinement is that Crossfire is now support in dual 8x modes which lets the 790GX reside in between the 780G and the 790FX Northbridge chipsets quite nicely.
The new SB750 Southbridge sees some fundamental shifts from the SB700 which cured USB woes of previous ATI Southbridge chipsets. AMD's new Advanced Clock Calibration is supported by the new SB750 which allows for much better overclocking when it is paired with a Phenom processor.
For more, click here: http://www.amdzone.com/index.php/reviews/56/10149-amd-790gx
Reviews:
Tech Report
Anandtech
Hot Hardware
OCW has reviewed the 790GX based Gigabyte GA-MA790GP-DS4H.
Legit Reviews has tested the Asus M3A78-T motherboard.
Other source about Advanced Clock Calibration:
AnandTech
RegHardware
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