HD 3870 Features and Specifications

Keeping true to the Diamond tradition of years past, Diamond has augmented their video card releases with a brand of their own optimized drivers. The most notable of these custom drivers is their SLI "hack" dubbed xDNA. xDNA is a sofware based feature that allows CrossFire set-ups on non CrossFire supporting hardware - namely NVIDIA based motherboards.

Microsoft DirectX 10.1 support

• Shader Model 4.1
• 32-bit floating point texture filtering
• Indexed cube map arrays
• Independent blend modes per render target
• Pixel coverage sample masking
• Read/write multi-sample surfaces with shaders
• Gather4 texture fetching

RADEON HD 3800 Series

• Code name: RV670
• Fabrication process: 55 nm
• 666 million transistors
• Unified architecture with an array of common processors for streaming processing of vertices and pixels, as well as other data
• Hardware support for DirectX 10.1, including Shader Model 4.1, geometry generation, and stream output
• 256-bit memory bus: four 64-bit controllers connected with a ring bus
• Core clock: 670-775 MHz
• 320 scalar floating-point ALUs (integer and floating-point formats, support for FP32 precision in compliance with IEEE 754)
• 4 enlarged texture units supporting FP16 and FP32 components in textures
• 32 texture address units (read the details in the baseline article)
• 80 texture fetch units (read the details in the baseline article)
• 16 bilinear filtering units that can filter FP16 textures at full speed and support trilinear and anisotropic filtering for all texture formats
• Dynamic branching in pixel and vertex shaders
• 16 ROPs supporting antialiasing modes with programmable sample patterns (over 16 samples per pixel, including FP16 or FP32 frame buffer formats). Peak performance: up to 16 samples per cycle, 32 samples per cycle in Z only mode
• Up to 8 MRT (multiple render targets)
• Integrated support for two RAMDACs, two Dual Link DVIs, HDMI, HDTV

RADEON HD 3870 Specifications

• Model SKU: 3870PE4512
• Core clock: 775 MHz
• Unified processors: 320
• 16 texture units, 16 blending units
• Effective memory frequency: 2250 MHz (2*1125 MHz)
• GDDR4 memory
• Memory size: 512 MB
• Memory bandwidth: 72 GB/sec.
• Maximum theoretical fill rate: 12.4 gigapixel per second.
• Theoretical texture sampling rate: 12.4 gigatexel per second.
• Two CrossFireX connectors
• PCI Express 2.0 x16
• 2 x DVI-I Dual Link, 2560x1600 video output
• TV-Out, HDTV-Out, HDCP support, HDMI adapter
• Power consumption: up to 105 W

Features:

• Superscalar unified shader architecture
• PCI Express 2.0 support
• 320 Unified Stream Processors
• 256-bit memory interface
• Direct X 10.1 / Shader Model 4.1 / OpenGL 2.0
• ATI Crossfire X Multi-GPU Support for highly scalable performance
• Up to four GPU support with an AMD 790FX based motherboard
• High-speed 128-bit-HDR (High Dynamic Range) rendering
• Up to 24x Custom Filter Anti-Aliasing
• 55nm process technology
• ATI Avivo HD Video and Display Technology
• Game Physics processing capability
• Up to 24X Custom Filter Anti-Aliasing
• Built-in HDMI with Multi-channel 5.1 surround audio
• Support for the ATI Radeon DVI to HDMI adapter
• Unified Video Decoder (UVD) for Blu-ray and HD DVD
• ATI PowerPlay energy conserving technology
• RoHS compliant
• Build in HDCP Support
• Windows Vista^TM 3D environment Support
• ATI Avivo^TM HD Video and Display Technology
• Built-in HDMI with Multi-channel 5.1 surround audio
• Two Dual Link DVI with full resolution HDCP support
• HD video playback
• Full 30-bit display processing
• CATALYST Software Drivers
• Windows Vista^TM 3D environment Support
• Support ATI Radeon^TM DVI-I to HDMI adapter

The other software features are more or less optimized version of already present ATI/AMD standards. That being the case Diamond Multimedia is as far as we know the only add-in boad parter to off such amenities, thus settign them apart and ahead of their peers in our opinion.

Diamond Specific Features:

Radeon HD 3870 Features at a Glance

Video Card Comparison Chart

<< Previous Page - Next Page >>