- Engine clock speed: 725 MHz
- Processing power (single precision): 2.09 TeraFLOPS
- Processing power (double precision): 418 GigaFLOPS
- Polygon throughput: 725M polygons/sec
- Data fetch rate (32-bit): 209 billion fetches/sec
- Texel fill rate (bilinear filtered): 52.2 Gigatexels/sec
- Pixel fill rate: 23.2 Gigapixels/sec
- Anti-aliased pixel fill rate: 92.8 Gigasamples/sec
- Memory clock speed: 1 GHz
- Memory data rate: 4.0 Gbps
- Memory bandwidth: 128 GB/sec
- Maximum board power: 151 Watts
- Idle board power: 27 Watts
| Brand Name | GIGABYTE |
| Part Number | GV-R585D5-1GD-B |
| Graphics Chip | RV890 Pro |
| Core clock | 725MHz |
| Shader Clock | 725MHz |
| SPs | 1600 |
| Fabrication Process | 40nm |
| Transistors | 2.15 Billion |
| Memory clock | 4000MHz |
| Memory bus | 256-bit |
| Memory bandwidth | 128GB/second |
| Memory Size | 1024MB |
| ROPs | 32 |
| Texture Filtering Units | 80 |
| Texture Filtering Rate | 52.2Gigatexels/second |
| HDCP Support | Yes |
| HDMI Support | Yes |
| Connectors | DVIx2, HDMI, DP |
| RAMDACs | 400MHz |
| Bus | PCI Express 2.0 |
| Form Factor | Dual Slot |
| Power Connectors | Dual 6-pin power |
The HD 5850 is based upon ATI’s Evergreen family of chips which include the Cypress XT and Pro (HD 5870 and HD 5850), the Juniper XT and Pro (HD 5770 and HD 5750), the Cedar and the Redwood which are chips scheduled to be released early next year for the low-end and the ultra low-end of the pricing and performance spectrum.
The HD 5850 is manufactured on TSMC’s 40nm fabrication process and has 2.15 Billion transistors. The die size of the chip is 334mm2 which is a far cry from the 576mm2 that the GeForce GTX280 measures with 1.4 Billion transistors, the largest video card chip in terms of transistors before the RV890. The HD 5850 has 1440 Stream Processors which compares with the 1600 on the HD 5870 and the 800 on the HD 4890 and HD 5770.
ATI first showed off Eyefinity on the U.S.S. Hornet, a World War II-era aircraft carrier. Eyefinity is ATI’S trademarked name for their multi-display technology. ATI showed off a 24 monitor system with 6 Display Ports on each of four ATI HD 5870s at that event. The GIGABYTE card has the normal connections for this card with two Dual-Link DVI a Display Port and a HDMI connector, allowing up to three monitors to be installed on the computer.
The main feature of the new cards is support for DirectX 11. DirectX 11 brings compliance with Shader Model 5.0, DirectCompute, Compute Shaders, Hull Shaders, Multithreading, and Tessellation to the API space. Tessellation increases the number of visible polygons from a number of control points on a limited model, saving bandwidth over using the high-polygon model by itself. Multi-threaded rendering allows the graphics card to take advantage of multi-core CPUs. Compute Shaders allows the graphics card to be used for non-graphics tasks such as GPGPU, and stream processing.
