AMD Stream Processor vs ATI Radeon HD 3870 X2
What is the difference between AMD Stream Processor and ATI Radeon HD 3870 X2. Find out which graphics card has better performance.
Graphics Processor (GPU)
| R580 | GPU Name | R680 |
| R580 XTX | Model number | R680 XT (215-0708017) |
| R500 | Architecture | TeraScale |
| TSMC | Foundry | TSMC |
| 90 nm | Process Size | 55 nm |
| 384 million | Transistors | 666 million |
| 352 mm² | Die Size | 192 mm² |
Graphics Card
| 2006 | Release Date | Jan 26th, 2008 |
| FireStream | Family | Radeon R600 (HD 3800) |
| End-of-life | Production | End-of-life |
| PCIe 1.0 x16 | Bus Interface | PCIe 2.0 x16 |
Memory
| 1024 MB | Memory Size | 512 MB x2 |
| GDDR3 | Memory Type | GDDR3 |
| 256 bit | Memory Bus | 256 bit x2 |
Clock Speeds
| 648 MHz 1296 Mbps effective | Memory Clock | 901 MHz 1802 Mbps effective |
| 594 MHz | GPU Clock | 825 MHz |
Render Config
| 16 | TMUs | 16 x2 |
| 16 | ROPs | 16 x2 |
Board Design
| 241 mm 9.5 inches | Length | 267 mm 10.5 inches |
| 111 mm 4.4 inches | Width | 113 mm 4.4 inches |
| 165 W | Thermal design power (TDP) | 165 W |
| 450 W | Suggested PSU | 450 W |
| 2x DVI 1x S-Video | Display Connectors | 2x DVI 1x S-Video |
| 1x 6-pin | Power Connectors | 1x 6-pin + 1x 8-pin |
API support
| 9.0c (9_3) | DirectX | 10.1 (10_1) |
| 2.1 (full) 3.0 (partial) | OpenGL | 3.3 (full) 4.0 (partial) |
| N/A | OpenCL | N/A |
| N/A | Vulkan | N/A |
| 3.0 | Shader Model | 4.1 |