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ATI Radeon™ HD 4770 Graphics

A new paradigm of performance and price.

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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 DirextX® 10.1 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 movies^1,3 play with incredible fidelity and have the freedom to edit videos with lightning-fast speed.

Key Features

Power to Spare – This GPU has the brute processing power needed for physics, artificial intelligence, stream computing and ray tracing calculations.
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.
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.
Advanced Memory – GDDR5 provides twice the data per pin of GDDR3 memory at the same clock speeds.
PCI Express 2.0 – Support for PCI Express 2.0 will prepare you for bandwidth-hungry games and 3D applications.
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.
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.

HD capable monitor required
ATI CrossFireX™ technology requires an ATI CrossFireX Ready motherboard, an ATI CrossFireX™ Bridge Interconnect and may require a specialized power supply.
Blu-ray drive required

NOTE: 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.).

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
- Command processor for reduced CPU overhead
- Shader instruction and constant caches
- Up to 128 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 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)
- 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 (UVD) 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
- ATI Avivo HD 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 up to two GPUs
- Integrated compositing engine
- High performance dual channel bridge interconnect⁸

1 ATI Avivo™ HD is a technology platform that includes a broad set of capabilities offered by certain ATI Radeon™ HD GPUs. Not all products have all features and full enablement of some ATI Avivo™ HD capabilities may require complementary products.

2 Blu-ray or HD DVD drive and HD monitor required

3 Some custom resolutions require user configuration

4 Playing HDCP content requires additional HDCP ready components, including but not limited to an HDCP ready monitor, Blu-ray or HD DVD disc drive, multimedia application and computer operating system.

5 Subject to digital rights management limitations; maximum supported audio stream bandwidth is 6.144 Mbps

6 ATI PowerPlay™ technology consists of numerous power saving features. Not all features may be available in all ATI Radeon HD 4770 Graphics cards.

7 ATI CrossFireX™ technology requires an ATI CrossFireX™ ready motherboard and may require a specialized power supply.

8 Dual channel interconnect is not required for ATI CrossFireX™ technology enabled products and may not be included in all product configurations

9 Upscaling is subject to available monitor resolution

benchmarkreviews.com

In conclusion, the ATI Radeon HD 4770 is perfect for HTPC builders and casual gamers looking for performance at a value with excellent cooling and overclocking capabilities.

Because on one hand the Radeon HD 4770 is meant to directly compete with the GeForce GTS 250 (which is a relabeled 9800 GTX+, and the 9800 GTX+ is a refresh of the 9800 GTX, but I digress), which it does seem capable of doing quite well.
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hothardware.com

There is a lot to like about the new Radeon HD 4770. With its expected street price of about $109, this will be brought down further to $99 through mail in rebates, the Radeon HD 4770 offers excellent bang for the buck.

In the end, the Radeon HD 4770 is one of the best buys at its expected price point currently. Performance is strong in light of competing offerings, the price is right, and the card is cheaper to operate over time than anything else in its class. Anyone in the market for a new graphics card priced around a hundred bucks should definitely consider the new AMD ATI Radeon HD 4770.
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amdzone.com

It's frankly amazing what type of performance you can get these days for $100. While ATI expects the cards to be around $109 there should be rebates dropping it to $99.

So for $99 you can max out most of the PC games out today up to 1920x1200 and some to 2560x1600 resolutions. Clearly not Crysis and a few others but what you can is nothing short of fantastic.
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neoseeker.com

The HD 4770 offers good value at somewhere close to $100 USD. If you were judging by price, you'd classify the HD 4770 as a mid-range video card; but judging by game performance, the HD 4770 seems more at home with other enthusiast class cards than it does mid-range performers.

In relation to the rest of ATI's closest lineup, the HD 4770 is a welcome addition, and fits in nicely. If you are any more than a casual gamer, we would say the entry level ticket to satisfying gaming performance begins with the HD 4770.

By taking the initial move to 40nm, AMD has won an important new milestone today. While the HD 4770 isn't a game-changer in the video card landscape today, it is a great first step in a promising direction. Featuring improved power usage, lower operating temperatures, and high-end performance for a lower-end price, the HD 4770 bodes well for both ATI's -- and PC gamers' -- remaining months of 2009.
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hardocp.com

The Radeon HD 4770 has a lot of potential for hardware enthusiasts, even at $100. We feel that AMD is finally making video cards for us hardware enthusiasts.

The Radeon HD 4770 presents a very strong real-world value. At $99-$109 it provides a great gameplay experience compared to the competition. In most games the gameplay experience was the same.

The Radeon HD 4770 provides value because it performs as it does using less power and producing less heat with potentially cheaper prices. It is fact that AMD has introduced new technology in at this price segment, while the competition has simply re-branded old technology. AMD's goals of making the Radeon HD 4000 series GPU scalable have definitely worked out well for them
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Graphics

ATI Radeon™ HD 4770 Graphics

A new paradigm of performance and price.

Key Features

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benchmarkreviews.com

hothardware.com

amdzone.com

neoseeker.com

hardocp.com