NVIDIA GeForce 820A vs NVIDIA GeForce2 GTS PRO
Graphics Processor
| GPU model | GF117 | NV15 |
|---|---|---|
| GPU variant | N15V-GM | GeForce2 GTS PRO |
| Architecture | Fermi 2.0 | Celsius |
| Foundry | TSMC | TSMC |
| Manufacturing process | 28 nm | 150 nm |
| Number of transistors | 585 million | 25 million |
| Die size | 116 mm² | 88 mm² |
Mobile graphics
| Release date | Mar 17th, 2014 | — |
|---|---|---|
| Generation | GeForce 800A | — |
| Production | End-of-life | — |
| Interface | PCIe 2.0 x16 | — |
| Predecessor | GeForce 700A | — |
| Successor | GeForce 900A | — |
Clocks
| GPU clock | 775 MHz | 200 MHz |
|---|---|---|
| Shader clock | 1550 MHz | — |
| Memory clock | 900 MHz 1800 Mbps effective | 200 MHz 400 Mbps effective |
Memory Configuration
| Memory size | 1024 MB | 32 MB |
|---|---|---|
| Memory type | DDR3 | DDR |
| Memory bus width | 64 bit | 128 bit |
| Bandwidth | 14.40 GB/s | 6.400 GB/s |
Render Configuration
| Shading units | 96 | — |
|---|---|---|
| TMUs | 16 | 8 |
| ROPs | 8 | 4 |
| SM count | 2 | — |
| Cache L1 | 64 KB (per SM) | — |
| Cache L2 | 128 KB | — |
| Pixel shaders | — | 4 |
| Vertex shaders | — | 0 |
Performance
| Pixel rate | 3.100 GPixel/s | 800.0 MPixel/s |
|---|---|---|
| Texture rate | 12.40 GTexel/s | 1.600 GTexel/s |
| FP32 (float) performance | 297.6 GFLOPS | — |
| FP64 (double) performance | 24.80 GFLOPS (1:12) | — |
Dimensions & Outputs
| TDP | 15 W | unknown |
|---|---|---|
| Outputs | No outputs | 1x VGA2x S-Video |
| Slot width | — | Single-slot |
| Suggested PSU | — | 200 W |
| Power connectors | — | None |
API Support & Features
| DirectX | 12 (11_0) | 7.0 |
|---|---|---|
| OpenGL | 4.6 | 1.5 |
| OpenCL | 1.1 | — |
| Vulkan | — | — |
| CUDA | 2.1 | — |
| Shader model | 5.1 | — |
| Pixel shader | — | 0.5 |
| Vertex shader | — | — |
Other Features
Graphics Card
| Release date | — | Apr 26th, 2000 |
|---|---|---|
| Generation | — | GeForce 2 |
| Production | — | End-of-life |
| Interface | — | AGP 4x |
| Predecessor | — | GeForce 2 MX |
| Successor | — | GeForce 3 |
