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)
8 render targets (MRTs) with anti-aliasing support
Accelerated physics processing
Dynamic Geometry Acceleration
High performance vertex cache
Programmable tessellation unit
Accelerated geometry shaderpath for geometry amplification
Memory read/write cache for improved stream output performance
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
Super AA (ATI CrossFireXTMconfigurations only)
All anti-aliasing features compatible with HDR renderin
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 AvivoTM HD Video and Display Platform1
Unified Video Decoder 2 (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 DivXand MPEG-1 video decode acceleration
AIT AvivoVideo Post Processor1
Color space conversion
Chroma subsampling format conversion
Horizontal and vertical scaling
Advanced vector adaptive per-pixel de-interlacing
De-blocking and noise reduction filtering
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)
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
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
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 XilleonTM 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 shaderswith video in real time
VGA mode support on all display outputs
ATI PowerPlayTM Technology6
Advanced power management technology for optimal performance and power savings
Constantly monitors GPU activity, dynamically adjusting clocks and voltage based on user scenario
Clock and memory speed throttling
Dynamic clock gating
Central thermal management-on-chip sensor monitors GPU temperature and triggers thermal actions as required
ATI CrossFireXTM 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
ATI AvivoT HD is a technology platform that includes a broad set of capabilities offered by certain ATI RadeonT HD GPUs. Not all products have all features and full enablement of some ATI AvivoT HD capabilities may require complementary products.
Blu-ray or HD DVD drive and HD monitor required
Some custom resolutions require user configuration
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.
ATI PowerPlayTM technology consists of numerous power saving features. Not all features may be available in all ATI Radeon HD 4800 Series graphics cards.
ATI CrossFireXTM technology requires an ATI CrossFireX Ready motherboard and may require a specialized power supply.
Dual channel interconnect is not required for ATI CrossFireXTM, and may not be included in all product configurations.
- by David_W @Aug 20, 2009
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I got this to run in crossfire with my Sapphire 4890. Runs about 20 degrees higher than the Sapphire but still in acceptable temperature. I got it for $50 cheaper so I can't complain. Can run any game very well at max settings.
This card performs very well for me and runs at a relatively cold temperature even under high load. My only complaint is that this card offers a very limited range of overclocking before artifacts and such begin to appear in game.
This card is cheap yet extremely fast. It's performance is amazing. The installation was easy to do. The only small thing is that the fan of the heatsink is a little bit out of the card making it possible to hit wires that could be there if you don't tie them well.
First video card since Radeon 8500LE. Out of the box, the heatsink fell off (it's only held by a strip of glue). So the lazy idiot that I am I decided to hold it in place with 2 rubber bands. It's been working so farAlso, it is VERY LOUD until you install the Catalyst suite, after which the fan is inaudible until playing a game, where the noise threatens to lift you off into space. Idling temp measured with CPUID is in the 66-70 range with the fan manually set at 40%.
I absolutely love this graphics card. 150 after rebate for a Radeon 4890. Can play everything any game. My temperatures are around 55 degrees on idle and 65 on load, never crossed 65 degrees. The fan isnt loud at all. I am using it without after market cooling and its a really good temperature. My previous card a XFX 4870, ran about 95 degrees on load, so this is a huge difference. I dont know what happened to the other people but mine is great.
This review was modfied by poster @ 12-09-09 07:15 AM
icantbelieveyouguystookmyname 12/04/09 Experience: 2 Days
Overall I have to say this is a very good video card. It is a cut down of the AMD reference HD4890, the parts are of lower quality; however, it runs at stock speeds just fine, but don't expect much oc headroom. At the black friday sale prices, this thing is unbeatable. 7 dollars cheaper than the 5770 even before rebate, and performs a LOT faster, by large margins.
Ok, I been reading the reviews and I was almost regretting this purchase. I dont know if Im lucky or something but I have no problems with this card. I can see people complaining about the fan but it is quieter than my 8800GT which got super hot and loud. Very happy with my new card.
Great card for the money. Picked it up on sale for only $150 after rebate. First card was overheating and would lock up occasionally. Thanks to NCIX Burnany store for great customer service, they replaced it quickly and this one is working great. Stock performance is on par with GTX 280 in almost all games and 4890 costs over $125 less!
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