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Asus EAH3870X2 1GB Top Review



Graphics Engine
ATI Radeon HD 3870X2
Bus Standard
PCI Express
Video Memory
Engine Clock
825 MHz
Memory Clock
1.8 GHz ( 900 MHz DDR3 )
Memory Interface
DVI Max Resolution
2560 x 1600
D-Sub Output
Yes x 1 (via DVI to D-Sub adaptor x 1 )
DVI Output
Yes x 4 (DVI-I)
HDMI Output
Yes x 1 (via DVI to HDMI adaptor x 1 )
HDTV Output (YPbPr)
HDCP Support
TV Output
Yes (S-Video to Composite)

Adapter/Cable Bundled

1 x DVI to D-Sub adaptor
1 x DVI to HDMI adaptor
1 x HDTV-out cable

Software Bundled

ASUS Utilities & Driver
Hottest 3D Game: Company of Heroes – Opposing Fronts

Other Accessories: Leather CD Wallet


Compatible Motherboard Chipset
AMD 790X
AMD 580X
AMD 480X
ATI CrossFire XpressTM 3200
Intel® X48
Intel® X38
Intel® 975X Express
Intel® P965 Express
Intel® P35 Express



  • 666 million transistors on 55nm fabrication process
  • PCI Express 2.0 x16 GPU bus interface1
  • 256-bit GDDR3/GDDR4 memory interface
  • Ring Bus Memory Controller
  • Fully distributed design with 512-bit internal ring bus for memory reads and writes
  • Microsoft Direct X 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
  • Garter texture fetching
  • Unified Superscalar Shader architecture
  • 320 stream processor units
  • Dynamic load balancing and resource allocation for vertex, geometry, and pixel shaders
  • Common instruction set and texture unit access supported for all types of shaders
  • Dedicated branch execution units and texture address processors
  • 128-bit floating point precision for all operations
  • Command processor for reduced cpu overhead
  • Shader instruction and constant caches
  • Up to 80 texture fetches per clock cycle.
  • Up to 128 textures per pixel
  • Fully associative multi-level texture cache design
  • DXTC and 3Dc+ texture compression
  • High resolution texture support (up to 8192x8192)
  • Fully associative texture Z/stencil cache designs
  • Double-sided Hierarchical Z/stencil buffer
  • Early Z test, RE-z, Z Range optimization, and Fast Z
  • Lossless Z and stencil compression (up to 128:1)
  • Lossless color compression (up to 8:1)
  • 8 Render targets (MRTs) with anti-aliasing support
  • Physics Processing support
  • Dynamic Geometry Acceleration 
  • High performance vertex cache
  • Programmable tessellation unit
  • Accelerated geometry shader path for geometry amplification
  • Memory read/write cache for improved stream output performance
  • Anti-aliasing features
  • Multi-sample anti-aliasing (2,4,or 8 samples per pixel)
  • Up to 24x custom filter anti-aliasing (CFAA) for improved quality
  • Adaptive super-sampling and multi-sampling o Temporal anti-aliasing
  • Gamma correct
  • Super AA (ATI Crossfire configurations only)
  • All anti-aliasing features compatible with HDR Rendering
  • Texture filtering features
  • 2x/4x/8x/16x high quality adaptive anisotropic filtering modes (up to 128 taps per pixel)
  • 128-bit floating point HDR texture filtering o Bicubic filtering
  • sRGB filtering (gamma/digamma) o Percentage Closer Filtering (PCF)
  • Depth and stencil texture (DST) format support
  • Shared exponent HDR (RGBE (9:9:9:5) texture format support
  • OpenGL 2.0 support
  • ATI Avivo™ HD Video and Display Platform
  • Dedicated unified video decoder (UVD) for H.264/AVC and VC-1 video formats
  • High definition (HD) playback of both Blu-ray and HD DVD formats
  • Hardware MPEG-1, MPEG-2, and DivX video decode acceleration
  • Motion compensation and IDCT
  • ATI Avivo Video Post Processor
  • Color space conversion
  • Chroma subsampling format conversion
  • Horizontal and vertical scaling • Gamma correction
  • Advanced vector adaptive per-pixel de-interlacing
  • De-blocking and noise reduction filtering
  • Detail enhancement
  • Inverse telecine (2:2 and 3:2 pull-down correction)
  • Bad edit correction
  • Two independent display controllers
  • Drive two displays simultaneously with independent resolutions, refresh rates, color controls and video overlays for each display
  • Full 30-bit display processing
  • Programmable piecewise linear gamma correction, color correction, and color space conversion
  • Spatial/temporal dithering provides 30-bit color quality on 24-bit and 18-bit displays
  • High quality pre- and post-scaling engines, with under-scan support for all display outputs
  • Content-adaptive de-flicker filtering for interlaced displays o Fast, glitch-free mode switching
  • Hardware cursor
  • Two integrated dual-link DVI display outputs
  • Each supports 18-, 24-, and 30-bit digital displays at all resolutions up to 1920x1200 (single-link DVI) or 2560x1600 (dual-link DVI)2
  • Each includes a dual-link HDCP encoder with on-chip key storage for high resolution playback of protected content3
  • Two integrated 400 MHz 30-bit RAMDACs
  • Each supports analog displays connected by VGA at all resolutions up to 2048x15362
  • DisplayPort output support4 o Supports 24- and 30-bit displays at all resolutions up to 2560x16002
  • HDMI output support 
  • Supports all display resolutions up to 1920x10802
  • Integrated HD audio controller with multi-channel (5.1) AC3 support, enabling a plug-and-play cable-less audio solution
  • Integrated AMD Xilleon™ HDTV encoder
  • Provides high quality analog TV output (component/S-video/composite)
  • Supports SDTV and HDTV resolutions • Underscan and overscan compensation
  • MPEG-2, MPEG-4, DivX, WMV9, VC-1, and H.264/AVC encoding and transcoding
  • Seamless integration of pixel shaders with video in real time
  • VGA mode support on all display outputs
  • ATI PowerPlay™
  • Advanced power management technology for optimal performance and power savings
  • Performance-on-Demand • Constantly monitors GPU activity, dynamically adjusting clocks and voltage based on user scenario
  • Clock and memory speed throttling
  • Voltage switching
  • Dynamic clock gating
  • Central thermal management – on-chip sensor monitors GPU temperature and triggers thermal actions as required
  • ATI CrossFireX™ Multi-GPU Technology
  • Scale up rendering performance and image quality with two, three, or four GPUs
  • Integrated compositing engine
  • High performance dual channel bridge interconnect
  • 2 Some custom resolutions require user configuration 
  • 3 HDCP support for playback of protected content requires connection to a HDCP capable display
  • 4 Requires external DisplayPort transmitter

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