# 956 million transistors on 55nm fabrication process
# PCI Express 2.0 x16 bus interface
# 256-bit GDDR3/4/5 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

* 800 stream processing units
o Dynamic load balancing and resource allocation for vertex, geometry, and pixel shaders
o Common instruction set and texture unit access supported for all types of shaders
o 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 160 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, Re-Z, Z Range optimization, 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 only)
* 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 2.0 support
# ATI Avivo™ HD Video and Display Platform6

* Unified Video Decoder 2 (UVD 2) for H.264/AVC, VC-1, and MPEG-2 video formats
o High definition (HD) playback of Blu-ray and HD DVD video
o Dual stream (HD+SD) playback support
o DirectX Video Acceleration 1.0 & 2.0 support
o 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 Processor6
o Color space conversion
o Chroma subsampling format conversion
o Horizontal and vertical scaling
o Gamma correction
o Advanced vector adaptive per-pixel de-interlacing
o De-blocking and noise reduction filtering
o Detail enhancement
o Color vibrance and flesh tone correction
o Inverse telecine (2:2 and 3:2 pull-down correction)
o Bad edit correction
o Enhanced DVD upscaling (SD to HD)
o Automatic dynamic contrast adjustment
* Two independent display controllers
o Drive two displays simultaneously with independent resolutions, refresh rates, color controls and video overlays for each display
o Full 30-bit display processing
o Programmable piecewise linear gamma correction, color correction, and color space conversion
o Spatial/temporal dithering provides 30-bit color quality on 24-bit and 18-bit displays
o High quality pre- and post-scaling engines, with underscan support for all display outputs
o Content-adaptive de-flicker filtering for interlaced displays
o Fast, glitch-free mode switching
o Hardware cursor
* Two integrated dual-link DVI display outputs
o Each supports 18-, 24-, and 30-bit digital displays at all resolutions up to 1920x1200 (single-link DVI) or 2560x1600 (dual-link DVI)2
o 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
o Each supports analog displays connected by VGA at all resolutions up to 2048x15362
* DisplayPort output support
o 24- and 30-bit displays at all resolutions up to 2560x16002
* HDMI output support
o All display resolutions up to 1920x10802
o Integrated HD audio controller with support for stereo and multi-channel (up to 7.1) audio formats, including AC-3, AAC, DTS, DTS-HD & Dolby True-HD4, enabling a plug-and-play audio solution over HDMI
* Integrated AMD Xilleon™ HDTV encoder
o Provides high quality analog TV output (component/S-video/composite)
o Supports SDTV and HDTV resolutions
o Underscan and overscan compensation
* Seamless integration of pixel shaders with video in real time
* VGA mode support on all display outputs

# ATI PowerPlay™ Technology5

* Advanced power management technology for optimal performance and power savings
* Performance-on-Demand
o Constantly monitors GPU activity, dynamically adjusting clocks and voltage based on user scenario
o Clock and memory speed throttling
o Voltage switching
o Dynamic clock gating
o 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

ATI Radeon HD 4850 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 75 Watt 6-pin PCI Express® power connector recommended (550 Watt and two 6-pin connectors for ATI CrossFireX™ technology in dual mode)
* Certified power supplies are recommended. Refer to http://ati.amd.com/certifiedPSU for a list of Certified products
* Minimum 1GB of system memory
* Installation software requires CD-ROM drive
* DVD playback requires DVD drive
* Blu-ray™ playback requires Blu-ray drive
* For a complete ATI CrossFireX™ system, a second ATI Radeon™ HD 4850 graphics card, an ATI CrossFireX Ready motherboard and one ATI CrossFireX Bridge Interconnect cable per graphics card (included) are required

ATI Radeon HD 4870 System Requirements

* PCI Express® based PC is required with one X16 lane graphics slot available on the motherboard
* 500 Watt or greater power supply with two 75W 6-pin PCI Express® power connectors recommended (600 Watt and four 6-pin connectors for ATI CrossFireX™ technology in dual mode)
* Certified power supplies are recommended. Refer to http://ati.amd.com/certifiedPSU for a list of Certified products
* Minimum 1GB of system memory
* Installation software requires CD-ROM drive
* DVD playback requires DVD drive
* Blu-ray™ playback requires Blu-ray drive
* For a complete ATI CrossFireX™ system, a second ATI Radeon™ HD 4870 graphics card, an ATI CrossFireX Ready motherboard and one ATI CrossFireX Bridge Interconnect cable per graphics card (included) are required

# 514 million transistors on 55nm fabrication process
# PCI Express 2.0 x16 bus interface
# GDDR3/DDR3/DDR2 memory interface (depending on model)
# 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

* 320 stream processing units
o Dynamic load balancing and resource allocation for vertex, geometry, and pixel shaders
o Common instruction set and texture unit access supported for all types of shaders
o 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)
* 8 render targets (MRTs) with anti-aliasing support
* Physics processing support

# 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 superior quality
* Adaptive super-sampling and multi-sampling
* Gamma correct
* Super AA (ATI CrossFireX™ configurations only)
* 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 2.0 support
# ATI Avivo™ HD Video and Display Platform1

* 2nd generation Unified Video Decoder (UVD 2)
o Enabling hardware decode acceleration of H.264, VC-1 and MPEG-2
o Dual stream playback (or Picture-in-picture)
* Hardware MPEG-1 and DivX video decode acceleration
o Motion compensation and IDCT
* ATI Avivo Video Post Processor1
o Enhanced DVD up-conversion to HD
o Color space conversion
o Chroma subsampling format conversion
o Horizontal and vertical scaling
o Gamma correction
o Advanced vector adaptive per-pixel de-interlacing
o De-blocking and noise reduction filtering
o Detail enhancement
o Inverse telecine (2:2 and 3:2 pull-down correction)
o Bad edit correction
o Automatic dynamic contrast adjustment
o Full score in HQV (SD) and HQV (HD) video quality benchmarks
* Two independent display controllers
o Drive two displays simultaneously with independent resolutions, refresh rates, color controls and video overlays for each display
o Full 30-bit display processing
o Programmable piecewise linear gamma correction, color correction, and color space conversion
o Spatial/temporal dithering provides 30-bit color quality on 24-bit and 18-bit displays
o High quality pre- and post-scaling engines, with underscan support for all display outputs
o Content-adaptive de-flicker filtering for interlaced displays
o Fast, glitch-free mode switching
o Hardware cursor
* Two integrated DVI display outputs
o Primary supports 18-, 24-, and 30-bit digital displays at all resolutions up to 1920x1200 (single-link DVI) or 2560x1600 (dual-link DVI)2
o decondary supports 18-, 24-, and 30-bit digital displays at all resolutions up to 1920x1200 (single-link DVI only)2
o 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
o Each supports analog displays connected by VGA at all resolutions up to 2048x15362
* DisplayPort™ output support
o Supports 24- and 30-bit displays at all resolutions up to 2560x16002
o Integrated HD audio controller with up to 2 channel 48 KHz stereo or multi-channel (7.1) AC3 enabling a plug-and-play cable-less audio solution4
* HDMI output support
o Supports all display resolutions up to 1920x10802
o Integrated HD audio controller with up to 2 channel 48 KHz stereo or multi-channel (7.1) AC3 enabling a plug-and-play cable-less audio solution4
* Integrated AMD Xilleon™ HDTV encoder
o Provides high quality analog TV output (component/S-video/composite)
o Supports SDTV and HDTV resolutions
o Underscan and overscan compensation
* Seamless integration of pixel shaders with video in real time
* VGA mode support on all display outputs

# ATI PowerPlay™ Technology5

* Advanced power management technology for optimal performance and power savings
* Performance-on-Demand
o Constantly monitors GPU activity, dynamically adjusting clocks and voltage based on user scenario
o Clock and memory speed throttling
o Voltage switching
o Dynamic clock gating
* Central thermal management – on-chip sensor monitors GPU temperature and triggers thermal actions as required

# ATI CrossFireX™ Multi-GPU Technology6

* Scale up rendering performance and image quality with two GPUs
* Integrated compositing engine
* High performance bridge interconnect

ATI Radeon™ HD 4600 System Requirements

* PCI Express® based PC is required with one X16 lane graphics slot available on the motherboard
* 400 Watt or greater power supply (550 Watt for ATI CrossFireX™ technology in dual mode) is recommended
* Certified power supplies are recommended. Refer to http://ati.amd.com/certifiedPSU for a list of Certified products
* 1GB of system memory recommended
* Installation software requires CD-ROM drive
* DVD playback requires DVD drive
* Blu-ray™ playback requires Blu-ray drive and full 1080p display requires a 1080p-capable monitor
* To enable dual mode ATI CrossFireX™ technology, a second ATI Radeon™ HD 4600 Series graphics card, an ATI CrossFireX Ready motherboard and one ATI CrossFireX Bridge Interconnect cable (included) is required.

Latest Driver.

ATi Catalyst 8.9


AMD GPU Clock Tool

This Overclocking and Monitoring Tool from AMD lets you manage clocks of all their cards.
It allows you to overclock the HD 4850 and the HD 4870 which were just recently released. Also you can monitor the sensors of these cards.

AMD GPU Clock Tool



HD4850/4870 Fan Fix!

If you make a profile in catalyst after turning on Overdrive( make sure clock and memory settings are correct). You can then go to the file "C:\Users\AMD(Your Username)\AppData\Local\ATI\ACE \Profiles\Fanspeed.xml.The xml file will have the same name as the catalyst profile you saved. right click and hit edit.

<Feature name="FanSpeedProtocol_0">
<Property name="FanSpeedProtocolProperty" value="Percent" />
</Feature>
<Feature name="FanSpeedAlgorithm_0">
<Property name="FanSpeedAlgorithm" value="Manual" />
</Feature>
<Feature name="FanSpeedRPMTarget_0">
<Property name="Want" value="0" />
</Feature>
<Feature name="FanSpeedPercentTarget_0">
<Property name="Want" value="50" />

Change the value to "manual" and Want value to "50(your choice)"

Save the file.Open the CCC and activate your profile.

50% seemed perfect for me because i am barebone(no casing).

Source

Windows XP >> C:\Documents and Settings\username \Local Settings\Application Data\ATI\ACE\profile created .XML

Windows Vista >> C:\Users\username\AppData\Local\ATI\ACE\Profiles\Profile name.XML

Make sure you select show hidden files and folders under folder options in the control panel


Enabling HDMI

Looks like it's already detected the sound output via HDMI and you can even enable DD51/DTS passthrough to the receiver.

But all i want is the sound to come out on the LCD TV via the stereo channel.....must try later...maybe on weekend...too lazy to drag my PC over to the TV now



Installing Driver Successfully

ATi Drivers Update or Installation Method(Please use this steps to properly install your ATi Driver

For More Info :
Source
Source
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