ASIC Features:
- 1 GB x2 of GDDR3 memory
- DL-DVIx 4 supports 4 displays.
- DirectX® 10.1
- 2 x 800 stream processing units
- 2 x 256-bit memory interface
- 24x custom filter anti-aliasing (CFAA) and high performance anisotropic filtering
- Dual mode ATI CrossFireX™ multi-GPU support for highly scalable performance
- PCI Express® 2.0 support
- Dynamic geometry acceleration
- Game physics processing capability
- ATI Avivo™ HD video and display technology*
- Unified Video Decoder 2 (UVD 2) for Blu-ray™and HD Video
- Accelerated Video Transcoding(AVT)
- DVD Upscaling
- Dynamic Contrast
- Built-in HDMI with 7.1 surround sound support
- Dynamic power management with ATI PowerPlay™ technology***
***Note: ATI PowerPlay™ technology consists of numerous power saving features. Not all features may be available in all ATI Radeon HD 4850 X2 graphics cards.
System Requirements:
- PCI Express® based PC is required with one X16 lane graphics slot available on the motherboard
- 650 Watt or greater power supply with one 2×3-pin PCIe® power connector and one 2×4-pin PCIe® power connector is required (1K Watt with two 2×3-pin and two 2×4-pin connectors for ATI CrossFireX™ technology in dual mode)1
- Certified power supplies are recommended. Refer to http://ati.amd.com/certifiedPSU for a list of Certified products
- Certified system cases with good airflow and cooling are recommended. Refer to http://ati.amd.com/certifiedcases 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 and full 1080p display requires a 1080p-capable monitor
- For a complete ATI CrossFireX™ system, a second ATI Radeon™ HD 4850 X2 graphics card, an ATI CrossFireX Ready motherboard and one ATI CrossFireX Bridge Interconnect cable per graphics card (included) are required
Operating System Support: Windows XP(32Bit/64Bit); Windows Vista(32Bit/64Bit); Windows Media Center Edition 2005
4850 X2 vs 4870 X2 vs 4870
| Name | ATI Radeon HD 4870 | 4870 X2 | 4850 X2 |
| Manufacturing Process | 55 nm | 55 nm | 55 nm |
| Stream Processors | 800 | 1600 (2 x 800) | 1600 (2 x 800) |
| ROPs | 16 | 32 (2 x 16) | 32 (2 x 16) |
| Pixel Fill-rate | 19.3 Gpixels/sec | 24 Gpixels/sec | 24 Gpixels/sec |
| Texture Address / Filtering | 40 / 40 | 80 / 80 | 80 / 80 |
| Core Clock | 750 Mhz | 750 Mhz | 625 Mhz |
| Shader Clock | 750 Mhz | 750 Mhz | 625 Mhz |
| Memory Clock | 3600 Mhz | 3600 Mhz | 2000 Mhz |
| Memory Interface | 256-bit | 2 x 256-bit | 2 x 256-bit |
| Memory Bandwidth | 115 GB/sec | 230 GB/sec | 128 GB/sec |
| Frame Buffer | 1024MB GDDR3 | 2 x 1024MB GDDR5 | 2 x 1024MB GDDR3 |
| Transistor Count | 965 million | 1.93 billion | 1.93 billion |
| Price | get latest prices | get latest prices | get latest prices |
The chart above lays out the differences between the 4870, 4870 X2, and 4850 X2. All cards use exactly the same core, but the 4850 X2 is clocked slower and has relatively slower GDDR3 memory.
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Display Resolution:
** 16:9 aspect ratio monitors are supported on 1920×1080 and 848×480 on Windows® XP and Windows® Vista. The complete list of resolutions depends on the driver version and operating system.
NOTE: Resolutions are limited by the performance of the attached monitor.
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The ATI Radeon HD 4850 Series GPUs deliver a cinematic gaming experience with unprecedented performance. The powerful new TeraScale graphics will propel you deep into your gameplay with seamless frame rates and high resolutions. Enhanced anti-aliasing (AA) and anisotropic filtering create striking graphics with unparalleled realism so you can max out the settings of the most demanding next-generation games or revitalize your favorite titles. Play today while preparing for tomorrow with tessellation, support for DirectX® 10.1 and scalable ATI CrossFireX™ technology.
- TeraScale Graphics Engine
The powerful new TeraScale graphics engine features deliver high resolutions and fast frame rates. - 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 up to quad GPU support offers superior scalability so your system is ready to level up when you are. - 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.
Go Beyond HD Video
Add an ATI Radeon HD 4850 Series GPU to your PC and watch the latest Blu-ray and HD movies play with incredible fidelity –upscale to nearly twice the display resolution of HD content.* Take full advantage of Blu-ray functionality with dual-stream, picture in picture (PIP) capabilities. Sophisticated new features within ATI Avivo™ HD technology provide a truly responsive experience. Support for the latest audio visual interconnects ensures you can take advantage of the latest display technology.
- Unified Video Decoder 2
Unified Video Decoder 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) capabilities. - Upscale Beyond 1080p
Watch the hottest Blu-ray movies or other HD content at full 1080p display resolution and beyond. - On-chip HDCP
On-chip HDCP (High-Bandwidth Digital Content Protection) makes life easier by allowing you to playback HDCP protected content.** - 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.
Break-through Efficiency
Like its predecessors, the ATI Radeon HD 4850 Series GPUs offer optimal performance and break-through efficiency with platform-independent intelligent power management. ATI PowerPlay™ delivers the power needed to blaze through even the most intense games while intuitively conserving energy at idle or when demand is low.
- ATI PowerPlay™ Technology
ATI PowerPlay™ Technology delivers high performance when needed and conserves power when the demand on the graphics processor is low. - Energy Efficient Manufacturing Process
Second generation 55nm chip uses the industry?s most energy efficient manufacturing process.
2 comments
r4i software
Best-performing card in the $300 price range four DVI outputs let you connect up to four LCDs.
The thing is, I know very little of power supplies. So my question to you is: what would be the best power supply for this graphics card? I read that it has to be at least 650W, but besided that, I don't know what to look for.
dsi r4
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