ASUS has launched two Radeon HD 4890 video cards with Voltage Tweak technology. According to ASUS this technology can increase the video cards performance up to 15% compared to AMD/ATI reference model. See below the models launched and their main specs.

Model: EAH4890 TOP/HTDI/1GD5

• Internal clock: 900 MHz
• Memory: 1 GB GDDR5
• Memory clock: 4 GHz DDR (1 GHz real)

Model: EAH4890 TOP/HTDI/1GD5

• Internal clock: 850 MHz
• Memory: 1 GB GDDR5
• Memory clock: 3.9 GHz DDR (975 MHz real)