The Radeon HD 3850 will be clocked at 700MHz with 1800MHz memory while the Radeon HD 3870 will feature a 825MHz GPU and 2400MHz memory. Both cards are made on a 55nm process and support PCI Express 2.0, DirectX 10.1 and UVD.
Superscalar unified shader architecture 320 stream processing units 256-bit memory interface DirectX 10.1 Shader Model 4.1 PCI Express 2.0 ATI CrossFireX multi-GPU support. Up to four cards with AMD 790FX based motherboards. 128-bit HDR rendering Up to 24x custom filter anti-aliasing 55nm process technology ATI Avivo Built-in HDMI and 5.1 surround audio Support for ATI Radeon DVI to HDMI adapter UVD support ATI PowerPlay Dynamic geometry acceleration Game physics processor capability