Expreview published some pictures of a non-reference Radeon HD 4890 graphics card from PowerColor. This model comes with cheaper power supply, it has abandoned the more expensive digital power supply design of the reference cards.
Powercolor non-reference HD 4890 will ship with core/memory clock of 980/1100MHz, up from 850/975MHz on reference model. Powercolor has opted Zerotherm cooler with 3 heatpipes and high-density cooling fins. The nickel plating technology can effectively prevent oxidation. Besides, the MOSFET and DRAM are both covered with copper cooling ribs to realize maximum coolness.