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Unlock GPU clock limit your AMD Radeon HD3870

@ 2007/11/22

This latest ATI baby has a clock-lock at 862MHz for the GPU, 85MHz faster than default frequency. The RV670 GPU has multiple power phases internally, and PowerPlay is activated all the time. When you overclock the GPU, the PLL VCO divider goes bananas, which will overvolt the card just enough to cause a lockdown.

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Comment from Rutar @ 2007/11/22

results, 900 Mhz isn't the monster overclock from the 3870 starting position (the same as 700 on the 8800GT % wise)

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