AMD 790GX review at The Tech Report

Saturday 09th August 2008, 11:32:00 AM, written by Rys

The Tech Report have taken a look at AMD 790GX, an integrated graphics offering for performance-oriented and multimedia folks.  The main difference compared to 780G is support by the IGP's memory controller for on-mainboard graphics memory:  the board they tested uses a 1Gb DDR3-1333 chip.

IGP clock is high at 700MHz, and AMD designate the product as Radeon HD 3300.  Here's a snippet:

"Like its Radeon HD 3200 predecessor, the 3300 supports Hybrid CrossFire configurations with Radeon HD 3400 series discrete graphics cards. According to AMD, the 790GX's graphics clock boost and performance cache memory allow Hybrid CrossFire setups that incorporate a Radeon HD 3470 to offer performance close to that of a Radeon HD 3650."

One of the more interesting features is the use of SB750 with a feature called Advanced Clock Calibration, which the chipset uses to drive Phenom processors at overclocked speeds.  Presumably the technology is the application of the SB750 as a more stable external clock source for the processor to drive itself from, helping it achieve higher frequencies.

AMD don't disclose the exact details however.  The support for ACC means that 790GX instantly becomes the chipset of choice for Phenom users looking to get the most performance out of their processor, and the best news is that using ACC doesn't affect your warranty or reduce the lifespan of the Phenom you overclock with it.

Check out the full article.

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Tagging

ati ± 790gx, acc, overclocking, phenom, sb750

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