VisionTek - High-Performance PC and Mac Upgrades and Enhancements

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Radeon HD 4670 QUAD

ATI Avivo™ Technology Enhanced Unified Video Decoder 2 (UVD 2)
Watch the hottest Blu-ray movies or other HD content at full 1080p display resolution and beyond and enjoy a more feature rich experience with enhanced Unified Video Decoder 2 (UVD 2)


  • Enhanced UVD 2
    now support hardware acceleration decode of dual 1080p HD video streams
  • Brighter Whites
    processing increases the blue value of white colors for brighter and more vivid video playback
  • Independent Video Gamma Control
    allows you to set video gamma independently from Windows desktop for a better viewing experience
  • Dynamic Video Range Control
    enables user to control levels of black and white during playback

Two independent display controllers

  • Drive four displays simultaneously with independent resolutions, refresh rates, color controls and video overlays for each display
  • Full 30-bit display processing
  • High quality pre- and post-scaling engines, with underscan support for all display outputs
  • Content-adaptive de-flicker filtering for interlaced displays
  • Fast, glitch-free mode switching
  • Hardware cursor

Four integrated DVI display outputs

  • Supports 18-, 24-, and 30-bit digital displays at all resolutions up to 1920x1200 (single-link DVI) or 2560x1600 (dual-link DVI)
  • Each includes a dual-link HDCP encoder with on-chip key storage for high resolution playback of protected content

Integrated AMD Xilleon™ HDTV encoder

  • Provides high quality analog TV output (component/S-video/composite)
  • Supports SDTV and HDTV resolutions
  • Underscan and overscan compensation



Quick Specs

Graphics Engine RADEON HD4670 x 2
Video Memory 2GB DDR3
Engine Clock 725MHz
Memory Clock 800MHz
Memory Interface 128bit
DirectX Support 10.1
Bus Standard PCIE 2.0
Display output 4 x DL DVIs on-board
HDTV Output Yes
External Power input (6 pin) Yes
FAN sink Dual Slot FAN Cooler
Dual-link DVI Yes (4 Ports)
HDMI/HDCP Support Yes (adapter is required)
Form Factor ATX size

Supported configurations

  • Single DVI-D
  • Dual DVI-D
  • Quad DVI-D
  • HDMI video and audio (via adapter)
  • Single VGA (adapter required)
  • Dual VGA (adapter required)
  • Quad VGA (adapter required)
  • S-Video (adapter required)
  • Composite RCA video (adapter required)
  • Component HDTV (adapter required)

Supported Operating Systems

  • Windows Vista
  • Windows XP Media Center Edition
  • Windows XP
  • Windows 2000

Whats in the box

  • (1) VisionTek Radeon 2GB 4670 x2 Quad Card 900307
  • (2) DVI-I to VGA adapters
  • (1) ATI Audio/video DVI to HDMI adapter
  • (1) 6-pin molex power connection

System Requirements

  • PCI Express® based PC is required with one X16 lane graphics slot available on the motherboard
  • 450 Watt or greater power supply with one 75W 6-pin PCI Express® power connectors recommended (550 Watt and two 6-pin connectors for ATI CrossFireX™ technology in dual card mode)
  • Certified power supplies are recommended. Refer to for a list
  • Minimum 1GB of system memory
  • Installation software requires CD-ROM drive
  • DVD playback requires DVD drive
  • Blu-ray™ playback requires Blu-ray drive