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ATI Radeon HD 4890: 1GHz GPU Conquered! ATI Radeon HD 4890: 1GHz GPU Conquered!
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ATI Radeon HD 4890: 1GHz GPU Conquered!
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Old 2nd April 2009, 10:03   #1
Madshrimp
 
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Default ATI Radeon HD 4890: 1GHz GPU Conquered!

Without using any additional overclocking tools or methods we conquered the 1GHz peak! For example, we had had to volt-mod the much simpler Radeon HD 3870 and increase its GPU voltage from 1.3V to 1.71V in order to achieve the same clock rate. The memory chips were stable at 1200MHz, which is equivalent to 4800MHz for GDDR5 memory. ATIís initiative of launching the Radeon HD 4890 OC as an individual product makes sense indeed. The new card boasts excellent overclockability and full stability. It worked without problems at the increased frequencies and passed all of our tests. Therefore we will publish the test results it achieved at both default and overclocked frequencies.

http://www.xbitlabs.com/articles/vid...on-hd4890.html
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