Asus has officially announced its overclocked HD 3850 card which is branded asthe EAH3850 TOP/HTDI/512M. According to the press release, Asus claims a performance boost of up to 12 percent. The new OCed HD 3850 card uses 0.8ns memory modules and has an overclocked core.
The 12 percent boost has been measured in 3DMark06, where the reference board scores 9,883 while Asus' overclocked HD 3850 gets 11,137. The new card works at 730 MHz for the core, which is 62 MHz over the reference clock of 668 MHz. The memory is clocked at 950MHz (1,9GHz effective) which is 122MHz over the 828MHz reference clock. The card uses 512MB of 0.8ns GDDR3 memory. The card is cooled by Asus' Glaciator fansink.
As the entire HD 3800 series this card also supports DirectX 10.1 and Shader Model 4.1. You can check out some additional info here.