NVIDIA GeForce GT 645M vs NVIDIA STG-2000
Graphics Processor
| GPU model | GK107 | NV1 |
|---|---|---|
| GPU variant | N13P-GS | STG2000X-B |
| Architecture | Kepler | — |
| Foundry | TSMC | ST |
| Manufacturing process | 28 nm | 500 nm |
| Number of transistors | 1,270 million | 1 million |
| Die size | 118 mm² | 90 mm² |
Mobile graphics
| Release date | Oct 1st, 2012 | — |
|---|---|---|
| Generation | GeForce 600M | — |
| Production | End-of-life | — |
| Interface | PCIe 3.0 x16 | — |
| Predecessor | GeForce 500M | — |
| Successor | GeForce 700M | — |
Clocks
| GPU clock | 709 MHz | 75 MHz |
|---|---|---|
| Memory clock | 900 MHz 1800 Mbps effective | 50 MHz |
Memory Configuration
| Memory size | 2 GB | 1 MB |
|---|---|---|
| Memory type | DDR3 | FPM |
| Memory bus width | 128 bit | 64 bit |
| Bandwidth | 28.80 GB/s | 400.0 MB/s |
Render Configuration
| Shading units | 384 | — |
|---|---|---|
| TMUs | 32 | 1 |
| ROPs | 16 | 1 |
| SMX count | 2 | — |
| Cache L1 | 16 KB (per SMX) | — |
| Cache L2 | 256 KB | — |
| Pixel shaders | — | 1 |
| Vertex shaders | — | 0 |
Performance
| Pixel rate | 5.672 GPixel/s | 75.00 MPixel/s |
|---|---|---|
| Texture rate | 22.69 GTexel/s | 75.00 MTexel/s |
| FP32 (float) performance | 544.5 GFLOPS | — |
| FP64 (double) performance | 22.69 GFLOPS (1:24) | — |
Dimensions & Outputs
| TDP | 32 W | 2 W |
|---|---|---|
| Outputs | No outputs | 1x VGA1x DB13W3 |
| Slot width | — | Single-slot |
| Length | — | 168 mm 6.6 inches |
| Suggested PSU | — | 200 W |
| Power connectors | — | None |
API Support & Features
| DirectX | 12 (11_0) | 1.0 |
|---|---|---|
| OpenGL | 4.6 | — |
| OpenCL | 3.0 | — |
| Vulkan | 1.1 | — |
| CUDA | 3.0 | — |
| Shader model | 5.1 | — |
| Pixel shader | — | — |
| Vertex shader | — | — |
Other Features
Graphics Card
| Release date | — | Sep 30th, 1995 |
|---|---|---|
| Generation | — | NV1 |
| Production | — | End-of-life |
| Launch price | — | 249 USD |
| Interface | — | PCI |
| Successor | — | Riva |
