ATI HD3870 X2 Review

Features:

• 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