The new chip has better thermals and it will have better idle power mode. Radeon HD 4890 should consume less energy in idle mode but due to its higher clocks, it will probably have higher power consumption in full 3D mode.
Shader units should be a bit more efficient but we'd advise you not to expect big improvements. This is a chip to get ATI by until it launches is RV8x0 40nm performance chip and it should be enough to hold the fort until the new 40nm performance part is here.
ATI Radeon HD 4890 uses less in idle mode
Posted on Thursday, March 26 2009 @ 12:17 CET by Thomas De Maesschalck