The ATI Radeon™ HD 4770 graphics processing unit (GPU) offers an unbeatable combination of HD gaming performance1 and price. Featuring the industry’s cutting-edge 40nm process technology and the most advanced GDDR5 memory technology, this GPU delivers seamless frame rates with incredible speed and processing power. Proof that high performance gaming and price can co-exist without compromise.
Leveraging the latest 40nm manufacturing process technology, the ATI Radeon™ HD 4770 GPU represents an industry milestone in the advancement of gaming performance.
Equipped with the fastest, most advanced GDDR5 memory technology, the ATI Radeon™ HD 4770 supports higher data rates which translates directly into superior performance.
Get right in the action and experience cinematic gaming at HD resolutions1 with outstanding performance in the latest DirextX10.1 games.
Unparalleled anti-aliasing (AA) and anisotropic filtering deliver eye-popping graphics with striking realism.
Take your game even further with ATI CrossFireX™ technology and enjoy superior scalability with dual GPU support2.
Tap into the massive parallel processing power of your ATI Radeon™ HD 4770 GPU with ATI Stream technology and tackle demanding tasks like video transcoding with amazing speed.
Watch the latest Blu-ray movies1,3 play with incredible fidelity and have the freedom to edit videos with lightning-fast speed.
ATI Radeon™ HD 4770 – Key Features
Advanced Memory - GDDR5 provides twice the data per pin of GDDR3 memory at the same clock speeds.
Enhanced Anti-Aliasing & Anisotropic Filtering - High performance anisotropic filtering and 24x custom filter anti-aliasing (CFAA) smooth jagged edges and create true-to-life graphics, for everything from grass to facial features.
DirectX® 10.1 - Play today while preparing for tomorrow with state-of-the-art DirectX 10.1 graphics capabilities.
ATI CrossFireX™ Technology - ATI CrossFireX™ technology with dual GPU support offers superior scalability so your system is ready to level up when you are2.
PCI Express 2.0 - Support for PCI Express 2.0 will prepare you for bandwidth-hungry games and 3D applications.
Power to Spare - This GPU has the brute processing power needed for physics, artificial intelligence, stream computing and ray tracing calculations.
Unified Video Decoder 2 (UVD 2) - UVD 2 frees up your CPU for other tasks so you get The Ultimate Visual Experience™ for even the most processing-intensive content, including VC-1, H.264 and now MPEG-2. Also, take full advantage of Blu-ray functionality with dual-stream, picture in picture (PIP) capabilities1,3.
Accelerated Video Transcoding (AVT) - With ATI Stream technology, owners of ATI Radeon™ HD 4770 GPUs can help accelerate the conversion of standard and HD video into multiple formats for use on differing consumer electronics devices. The ATI Video Converter, designed to enable GPU transcoding of HD video streams, is currently available.
Upscale Beyond 1080p - Watch the hottest Blu-ray movies or other HD content at full 1080p display resolution and beyond4.
Enhanced DVD Upscaling - Watch standard DVD movies in near high-definition quality with DVD upscaling. The GPU uses post processing algorithms to enhance standard and low resolution videos and movies on your HD display.
Dynamic Contrast - Dynamic Contrast automatically adjusts the contrast and brightness during scenes to consistently deliver a crisp, vibrant picture.
HDMI - Enjoy the latest audio technologies using HDMI with 7.1 digital surround sound support. Also, xvYCC support allows the user to enjoy a wider range of color when connected to a capable HDTV.
Dynamic Power Management - ATI Radeon HD 4770 GPU delivers high performance when needed and conserves power when the demand on the graphics processor is low.
1 HD capable monitor required 2 ATI CrossFireX™ technology requires an ATI CrossFireX Ready motherboard, an ATI CrossFireX™ Bridge Interconnect and may require a specialized power supply. 3 Blu-ray drive required 4 The ATI Radeon™ HD 4770 GPU can upscale video display to 2560x1600 on dual-link monitors which is almost twice the display resolution of 1080p displays.
The product descriptions, features and performance results are for graphics cards based on AMD´s standard reference design for the ATI Radeon™ HD 4770 with GDDR5 memory. Third party manufacturers may modify these reference designs, which can result in product specifications, features and/or performance results different from those described in this document. Buyers should confirm exact specifications, features and performance of third party graphics cards before purchase.
ATI Radeon™ HD graphics chips have numerous features integrated into the processor itself (e.g., HDCP, HDMI, etc.). Third parties manufacturing products based on, or incorporating ATI Radeon HD graphics chips, may choose to enable some or all of these features. If a particular feature is important to you, please inquire of the manufacturer if a particular product supports this feature. In addition, some features or technologies may require you to purchase additional components in order to make full use of them (e.g. a Blu-Ray or HD-DVD drive, HDCP-ready monitor, etc.).
Specifications
- by David_W @May 07, 2009
826 million transistors on 40nm fabrication process
PCI Express® 2.0 x16 bus interface
128-bit GDDR5 memory interface
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
Unified Superscalar Shader Architecture
640 stream processing 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
High resolution texture support (up to 8192 x 8192)
Fully associative texture Z/stencil cache designs
Double-sided hierarchical Z/stencil buffer
Early Z test and Fast Z Clear
Lossless Z & stencil compression (up to 128:1)
Lossless color compression (up to 8:1)
Up to 8 render targets (MRTs) with anti-aliasing
Accelerated physics processing
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
Gamma correct
Super AA (ATI CrossFireX™ configurations only7)
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
sRGB filtering (gamma/degamma)
Percentage Closer Filtering (PCF)
Depth & stencil texture (DST) format support
Shared exponent HDR (RGBE 9:9:9:5) texture format support
OpenGL 3.0 support
ATI Avivo™ HD Video and Display Platform1
Unified Video Decoder 2 (UVD 2) for H.264/AVC, VC-1, and MPEG-2 video formats
High definition (HD) playback of Blu-ray and HD DVD video2
Dual stream (HD+SD) playback support
DirectX Video Acceleration 1.0 & 2.0 support
Support for BD-Live certified applications
Hardware DivX and MPEG-1 video decode acceleration
Accelerated video transcoding & encoding for H.264 and MPEG-2 formats
ATI Avivo Video Post Processor1
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
Color vibrance and flesh tone correction
Inverse telecine (2:2 and 3:2 pull-down correction)
Bad edit correction
Enhanced DVD upscaling (SD to HD)9
Automatic dynamic contrast adjustment
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 underscan support for all display outputs
Content-adaptive de-flicker filtering for interlaced displays
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)3
Each includes a dual-link HDCP encoder with on-chip key storage for high resolution playback of protected content4
Two integrated 400 MHz 30-bit RAMDACs
Each supports analog displays connected by VGA at all resolutions up to 2048x15363
DisplayPort output support
24- and 30-bit displays at all resolutions up to 2560x16003
HDMI output support
All display resolutions up to 1920x10803
Integrated HD audio controller with support for stereo and multi-channel (up to 7.1) audio formats, including AC-3, AAC, DTS5, enabling a plug-and-play audio solution over HDMI
Integrated AMD Xilleon™ HDTV encoder
Provides high quality analog TV output (component/S-video/composite)
Supports SDTV and HDTV resolutions
Underscan and overscan compensation
Seamless integration of pixel shaders with video in real time
VGA mode support on all display outputs
ATI PowerPlay™ Technology6
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 Technology7
Scale up rendering performance and image quality with two, three, or four GPUs
Integrated compositing engine
High performance dual channel bridge interconnect8
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