NVIDIA GeForce 7800 GTX 512 vs NVIDIA GeForce 820M
Graphics Processor
| GPU model | G70 | GF117 |
|---|---|---|
| GPU variant | GF-7800-U-A2 | N15V-GM-B-A2 |
| Architecture | Curie | Fermi 2.0 |
| Foundry | TSMC | TSMC |
| Manufacturing process | 110 nm | 28 nm |
| Number of transistors | 302 million | 585 million |
| Die size | 333 mm² | 116 mm² |
Graphics Card
| Release date | Nov 14th, 2005 | — |
|---|---|---|
| Generation | GeForce 7 PCIe | — |
| Production | End-of-life | — |
| Launch price | 649 USD | — |
| Interface | PCIe 1.0 x16 | — |
| Reviews | 206 in our database | — |
| Predecessor | GeForce 6 PCIe | — |
| Successor | GeForce 8 | — |
Clocks
| GPU clock | 500 MHz | 625 MHz |
|---|---|---|
| Memory clock | 800 MHz 1600 Mbps effective | 900 MHz 1800 Mbps effective |
| Shader clock | — | 1250 MHz |
Memory Configuration
| Memory size | 512 MB | 1024 MB |
|---|---|---|
| Memory type | GDDR3 | DDR3 |
| Memory bus width | 256 bit | 64 bit |
| Bandwidth | 51.20 GB/s | 14.40 GB/s |
Render Configuration
| Pixel shaders | 24 | — |
|---|---|---|
| Vertex shaders | 8 | — |
| TMUs | 24 | 16 |
| ROPs | 16 | 8 |
| Shading units | — | 96 |
| SM count | — | 2 |
| Cache L1 | — | 64 KB (per SM) |
| Cache L2 | — | 128 KB |
Performance
| Pixel rate | 8.000 GPixel/s | 2.500 GPixel/s |
|---|---|---|
| Vertex rate | 1.000 GVertices/s | — |
| Texture rate | 12.00 GTexel/s | 10.00 GTexel/s |
| FP32 (float) performance | — | 240.0 GFLOPS |
| FP64 (double) performance | — | 20.00 GFLOPS (1:12) |
Dimensions & Outputs
| Slot width | Dual-slot | — |
|---|---|---|
| Length | 228 mm 9 inches | — |
| TDP | 108 W | 15 W |
| Suggested PSU | 300 W | — |
| Outputs | 2x DVI1x S-Video | No outputs |
| Board number | P348 | — |
| Width | 111 mm 4.4 inches | — |
| Height | 38 mm 1.5 inches | — |
API Support & Features
| DirectX | 9.0c (9_3) | 12 (11_0) |
|---|---|---|
| OpenGL | 2.1 | 4.6 |
| OpenCL | — | 1.1 |
| Vulkan | — | — |
| Shader model | 3.0 | 5.1 |
| CUDA | — | 2.1 |
Other Features
Mobile graphics
| Release date | — | Nov 27th, 2013 |
|---|---|---|
| Generation | — | GeForce 800M |
| Production | — | End-of-life |
| Interface | — | PCIe 2.0 x16 |
| Predecessor | — | GeForce 700M |
| Successor | — | GeForce 900M |
