| VisionTek 900338 Radeon HD 6870 Video Card |
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Reviews -
Featured Reviews: Video Cards
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| Written by Olin Coles |
| Saturday, 30 October 2010 |
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Page 3 of 15
Radeon Features
- Microsoft DirectX 11 Support
- AMD Eyefinity Technology
- AMD Accelerated Parallel Processing (APP) Technology Designed for DirectCompute 5.0 and OpenCL
- Accelerate Video Transcoding
- 40 nm Process Technology
- Advanced GDDR5 Memory Technology
- 3rd Generation TeraScale Engine
- Microsoft Windows 7 Support
- AMD CrossFireX Technology
- Enhanced Anisotropic Filtering
- Accelerated Video Transcoding
- Display Flexibility, Supports DL-DVI, DP, HDMI and D-Sub
- HDMI 1.4a support with Deep Color and 7.1 High Bitrate Audio
- On chip HDCP Support
- AMD CrossFireX multi-GPU support for highly scalable performance. (Use up to four discrete cards with an AMD 790FX based motherboard)
- AMD Avivo HD Support
- ATI Unified Video Decoder 3 (UVD3) for 3D 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 including memory clocks
- Dolby TrueHD and DTSHD Master Audio Support
AMD Barts GPU Details
- ATI Radeon HD 5850 has a size of 336 sq.mm, perf/sq.mm = 22.0
- AMD Radeon HD 6870 has a size of 255 sq.mm, perf/sq.mm = 30.3
6850/6870 Specifications
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Reference Design Attribute
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Radeon HD 5850
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Radeon HD 5870
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Radeon HD 6850
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Radeon HD 6870
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Process
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40nm
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40nm
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40nm
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40nm
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Transistors
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2.15B
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2.15B
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1.7B
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1.7B
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Engine Clock
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725 MHz
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850 MHz
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775 MHz
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900 MHz
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Stream Processors
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1440
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1600
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960
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1120
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Compute Performance
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2.09 TFLOPS
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2.72 TFLOPs
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1.50 TFLOPs
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2.00 TFLOPs
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Texture Units
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72
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80
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48
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56
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Texture Fillrate
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52.2 GTexels/s
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68.0 GTexel/s
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37.2 GTexel/s
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50.4 GTexel/s
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ROPs
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32
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32
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32
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32
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Pixel Fillrate
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23.2 Gpixel/s
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27.2 GPixel/s
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24.8 GPixel/s
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28.8 GPixel/s
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Z/Stencil
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92.8 GSamples/s
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108.8 GSamples/s
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99.2 GSamples/s
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128.0 GSamples/s
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Memory Type
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GDDR5
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GDDR5
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GDDR5
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GDDR5
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Memory Clock
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1000 MHz
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1200 MHz
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1000 MHz
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1050 MHz
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Memory Data Rate
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4.0 Gbps
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4.8 Gbps
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4.0 Gbps
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4.2 Gbps
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Memory Bandwidth
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128.0 GB/s
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153.6 GB/s
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128.0 GB/s
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134.4 GB/s
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Maximum Board Power
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170W
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188W
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127W
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151W
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Idle Board Power
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27W
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27W
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19W
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19W
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