NVIDIA GeForce 620M vs NVIDIA GeForce 800A
Graphics Processor
| GPU model | GF117 | GF119 |
|---|---|---|
| GPU variant | N13P-GLP | — |
| Architecture | Fermi 2.0 | Fermi 2.0 |
| Foundry | TSMC | TSMC |
| Manufacturing process | 28 nm | 40 nm |
| Number of transistors | 585 million | 292 million |
| Die size | 116 mm² | 79 mm² |
Mobile graphics
| Release date | Mar 22nd, 2012 | Mar 17th, 2014 |
|---|---|---|
| Generation | GeForce 600M | GeForce 800A |
| Production | End-of-life | End-of-life |
| Interface | PCIe 2.0 x16 | PCIe 2.0 x16 |
| Predecessor | GeForce 500M | GeForce 700A |
| Successor | GeForce 700M | GeForce 900A |
Clocks
| GPU clock | 625 MHz | 475 MHz |
|---|---|---|
| Shader clock | 1250 MHz | 950 MHz |
| Memory clock | 900 MHz 1800 Mbps effective | 900 MHz 1800 Mbps effective |
Memory Configuration
| Memory size | 1024 MB | 1024 MB |
|---|---|---|
| Memory type | DDR3 | DDR3 |
| Memory bus width | 64 bit | 64 bit |
| Bandwidth | 14.40 GB/s | 14.40 GB/s |
Render Configuration
| Shading units | 96 | 48 |
|---|---|---|
| TMUs | 16 | 8 |
| ROPs | 8 | 4 |
| SM count | 2 | 1 |
| Cache L1 | 64 KB (per SM) | 64 KB (per SM) |
| Cache L2 | 128 KB | 128 KB |
Performance
| Pixel rate | 2.500 GPixel/s | 950.0 MPixel/s |
|---|---|---|
| Texture rate | 10.00 GTexel/s | 3.800 GTexel/s |
| FP32 (float) performance | 240.0 GFLOPS | 91.20 GFLOPS |
| FP64 (double) performance | 20.00 GFLOPS (1:12) | 7.600 GFLOPS (1:12) |
Dimensions & Outputs
| TDP | 15 W | 15 W |
|---|---|---|
| Outputs | No outputs | No outputs |
API Support & Features
| DirectX | 12 (11_0) | 12 (11_0) |
|---|---|---|
| OpenGL | 4.6 | 4.6 |
| OpenCL | 1.1 | 1.1 |
| Vulkan | — | — |
| CUDA | 2.1 | 2.1 |
| Shader model | 5.1 | 5.1 |
