AMD Radeon HD 8490 OEM vs NVIDIA GeForce 6800 Ultra
What is the difference between AMD Radeon HD 8490 OEM and NVIDIA GeForce 6800 Ultra. Find out which graphics card has better performance.
Graphics Processor (GPU)
| Caicos | GPU Name | NV45 |
| Caicos XTX | Model number | 6800 Ultra |
| TeraScale 2 | Architecture | Curie |
| TSMC | Foundry | TSMC |
| 40 nm | Process Size | 130 nm |
| 370 million | Transistors | 222 million |
| 67 mm² | Die Size | 287 mm² |
Graphics Card
| Jul 23rd, 2013 | Release Date | Jul 26th, 2004 |
| Sea Islands (HD 8400) | Family | GeForce 6 PCIe (6800) |
| End-of-life | Production | End-of-life |
| Southern Islands | Predecessor | GeForce PCX |
| PCIe 2.0 x16 | Bus Interface | PCIe 1.0 x16 |
Memory
| 1024 MB | Memory Size | 256 MB |
| DDR3 | Memory Type | GDDR3 |
| 64 bit | Memory Bus | 256 bit |
| 14.40 GB/s | Bandwidth | 35.20 GB/s |
Performance
| 3.500 GPixel/s | Pixel fillrate | 6.800 GPixel/s |
| 7.000 GTexel/s | Texture fillrate | 6.800 GTexel/s |
Clock Speeds
| 900 MHz 1800 Mbps effective | Memory Clock | 550 MHz 1100 Mbps effective |
| 875 MHz | GPU Clock | 425 MHz |
Render Config
| 8 | TMUs | 16 |
| 4 | ROPs | 16 |
Board Design
| Single-slot | Slot Width | Dual-slot |
| 168 mm 6.6 inches | Length | 197 mm 7.8 inches |
| 35 W | Thermal design power (TDP) | 81 W |
| 200 W | Suggested PSU | 250 W |
| 1x DVI 1x DisplayPort | Display Connectors | 2x DVI 1x S-Video |
| None | Power Connectors | 1x 6-pin |
| C369, C553 | Board Number | P211, P214 |
API support
| 11.2 (11_0) | DirectX | 9.0c (9_3) |
| 4.4 | OpenGL | 2.1 |
| 1.2 | OpenCL | N/A |
| N/A | Vulkan | N/A |
| 5.0 | Shader Model | 3.0 |