Phopojijo writes: The recently released AMD Radeon R9 290X has an advertised shader clock rate of "up to 1GHz". The card brought formerly $1000-level performance down to a $550 price point. Its benchmarks tend to fluctuate wildly, however, based on the card's ability to maintain an intended maximum temperature of 95C. By analyzing across a variety of fan speeds, AMD's default settings are characteristic of a 727 MHz base clock with an average boost to 850-880 MHz. At these defaults, the card will not maintain 1GHz for more than a couple of minutes (or less).
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