NVIDIA GeForce 820A vs ATI Radeon HD 2950 XTX
What is the difference between NVIDIA GeForce 820A and ATI Radeon HD 2950 XTX. Find out which graphics card has better performance.
Graphics Processor (GPU)
| GF117 | GPU Name | RV670 |
| N15V-GM | Model number | RV670 XTX (215-0708004) |
| Fermi 2.0 | Architecture | TeraScale |
| TSMC | Foundry | TSMC |
| 28 nm | Process Size | 55 nm |
| 585 million | Transistors | 666 million |
| 116 mm² | Die Size | 192 mm² |
Graphics Card
| Mar 17th, 2014 | Release Date | Never Released |
| GeForce 800A | Family | Radeon R600 (HD 2900) |
| End-of-life | Production | End-of-life |
| GeForce 700A | Predecessor | Radeon R500 PCIe |
| PCIe 2.0 x16 | Bus Interface | PCIe 2.0 x16 |
Memory
| 1024 MB | Memory Size | 512 MB |
| DDR3 | Memory Type | GDDR4 |
| 64 bit | Memory Bus | 256 bit |
| 14.40 GB/s | Bandwidth | 72.06 GB/s |
Performance
| 3.100 GPixel/s | Pixel fillrate | 12.43 GPixel/s |
| 12.40 GTexel/s | Texture fillrate | 12.43 GTexel/s |
| 297.6 GFLOPS | FP32 (float) performance | 497.3 GFLOPS |
| 24.80 GFLOPS (1:12) | FP64 (double) performance | 99.46 GFLOPS (1:5) |
Clock Speeds
| 900 MHz 1800 Mbps effective | Memory Clock | 1126 MHz 2.3 Gbps effective |
| 775 MHz | GPU Clock | 777 MHz |
Render Config
| 96 | Shading Units | 320 |
| 16 | TMUs | 16 |
| 8 | ROPs | 16 |
| 128 KB | L2 Cache | 256 KB |
Board Design
| 15 W | Thermal design power (TDP) | 110 W |
| No outputs | Display Connectors | 2x DVI 1x S-Video |
API support
| 12 (11_0) | DirectX | 10.1 (10_1) |
| 4.6 | OpenGL | 3.3 (full) 4.0 (partial) |
| 1.1 | OpenCL | N/A |
| N/A | Vulkan | N/A |
| 5.1 | Shader Model | 4.1 |