XFX Radeon HD 5870 XXX Edition Video Card Review :: Features

01-14-2010 · Category: Hardware -

By Benjamin Sun
  • Dual GPUs with a total of 4.3 billion 40nm transistors
  • TeraScale 2 Unified Processing Architecture
    • 3200 Stream Processing Units
    • 1600 Stream Processing Units
    • 80 Texture Units
    • 128 Z/Stencil ROP Units
    • 32 Color ROP Units
  • GDDR5 interface
  • PCI Express 2.1 x16 bus interface
  • DirectX® 11 support
    • Shader Model 5.0
    • DirectCompute 11
    • Programmable hardware tessellation unit
    • HDR texture compression
    • Order-independent transparency
  • OpenGL 3.2 support
  • Image quality enhancement technology
    • Up to 24x multi-sample and super-sample anti-aliasing modes
    • Adaptive anti-aliasing
    • Super AA
    • 16x angle independent anisotropic texture filtering
    • 128-bit floating point HDR rendering
  • ATI Eyefinity multi-display technology
    • Three independent display controllers
    • Drive three displays simultaneously with independent resolutions, refresh rates, color controls, and video overlays
    • Display grouping
    • Combine multiple displays to behave like a single large display
  • ATI Stream acceleration technology
    • OpenCL 1.0 compliant
  • DirectCompute 11
  • Double precision floating point processing support
  • Accelerated video encoding, transcoding, and upscaling
  • ATI CrossFireX™ multi-GPU technology6
    • Dual, triple, and quad GPU scaling
  • ATI Avivo HD Video & Display technology
  • UVD 2 dedicated video playback accelerator
  • Advanced post-processing and scaling
  • Dynamic contrast enhancement and color correction
  • Brighter whites processing (blue stretch)
  • Independent video gamma control
  • Dynamic video range control
  • Support for H.264, VC-1, and MPEG-2
  • Dual-stream 1080p playback support
  • DXVA 1.0 & 2.0 support
  • Integrated dual-link DVI output with HDCP
  • Max resolution: 2560x1600
  • Integrated DisplayPort output
    • Max resolution: 2560x1600
  • integrated HDMI 1.3 output with Deep Color, xvYCC wide gamut support, and high bit-rate audio
    • Max resolution: 1920x1200
  • integrated VGA output
    • Max resolution: 2048x1536
  • 3D stereoscopic display/glasses support
  • Integrated HD audio controller
    • Output protected high bit rate 7.1 channel surround sound over HDMI with no additional cables required
    • Supports AC-3, AAC, Dolby TrueHD and DTS Master Audio formats
  • ATI PowerPlay™ power management technology7
    • Dynamic power management with low power idle state
    • Ultra-low power state support for multi-GPU configurations
    • Certified drivers for Windows 7, Windows Vista, and Windows XP
    • Engine clock speed: 875 MHz
    • Processing power (single precision): 2.72 TeraFLOPS
    • Processing power (double precision): 544 GigaFLOPS
    • Polygon throughput: 875M polygons/sec
    • Data fetch rate (32-bit): 272 billion fetches/sec
    • Texel fill rate (bilinear filtered): 68 Gigatexels/sec
    • Pixel fill rate: 27.2 Gigapixels/sec
    • Anti-aliased pixel fill rate: 108.8 Gigasamples/sec
    • Memory clock speed: 1.3 GHz
    • Memory data rate: 5.2 Gbps
    • Memory bandwidth: 166.46 GB/sec
    • Maximum board power: 188 Watts
    • Idle board power: 27 Watts
    Brand Name XFX
    Graphics Chip Cypress XT
    Clock speed 875MHz
    Shader Clock 875MHz
    SPs 1600
    Fabrication Process 40nm
    Transistors 2.15 billion
    Memory clock 1.3GHz
    Memory bus 256-bit
    Memory bandwidth 166.4GB/second
    Memory Size 1024MB
    ROPs 40
    Texture Filtering Units 80
    Texture Filtering Rate 68 Gigatexels/second
    HDCP Support Yes
    HDMI Support Yes
    Connectors DVIx2, DP, HDMI
    RAMDACs 400MHz
    Bus PCI Express 2.0
    Form Factor Dual Slot
    Power Connectors Dual 6-pin

    The XFX card is based upon ATI’s Cypress XT chip which is part of the Evergreen family of chips that comprise their DirectX 11 cards. The Cypress chip is used on the 5870, 5850 and 5970 cards with modifications to the chip in the form of the number of Stream Processors on the chip. The HD 5870 has 1600 SPs, while the 5850 has 1440 and the HD 5970 has 1600 on each of two graphics chips totaling 3200.

    ATI’s Evergreen family is built on TSMC’s 40nm fabrication process with over 2.15 Billion transistors present on the card. ATI has packed the transistors into a compact package which is the same size as their HD 4890 chip but with over twice the transistors and on a lower process node meaning that heat and power draw should be lower than on the 55nm process for a chip that is equally as large. The HD 5870 has a 256-bit GDDR5 memory controller.

    The XFX version of the HD 5870 card has a clock speed of 875MHz, which is 25MHz faster than the HD 5870 reference design. Their XT version has a clock speed of 865MHz which is a small decrease from this card. XFX has overclocked the memory by 100MHz over the reference clock as well. The memory on the card is GDDR5 memory which doubles the bandwidth of that found on GDDR3 memory. This translates into a memory data rate of 5.2Gbps and a memory bandwidth of 166.4GB/second.

    One of the key features of the HD 5xxx series is the support for DirectX 11. Microsoft released Windows 7 late last year with a slew of new features including the latest addition to the DirectX. 11 introduce Hardware Tessellation, Compute Shaders and more to graphics cards and ATI is currently the only vendor with cards that support it. Several games that tentatively support DirectX 11 have been patched or released including BattleForge and Dirt 2, two of the games in our test suite.