NVIDIA GeForce GTX 645 OEM vs NVIDIA GeForce GTX 675M
Graphics Processor
| GPU model | GK106 | GF114 |
|---|---|---|
| GPU variant | GK106-200-A1 | N13E-GS1-A1 |
| Architecture | Kepler | Fermi 2.0 |
| Foundry | TSMC | TSMC |
| Manufacturing process | 28 nm | 40 nm |
| Number of transistors | 2,540 million | 1,950 million |
| Die size | 221 mm² | 332 mm² |
Graphics Card
| Release date | Apr 22nd, 2013 | — |
|---|---|---|
| Generation | GeForce 600 | — |
| Production | End-of-life | — |
| Interface | PCIe 3.0 x16 | — |
| Predecessor | GeForce 500 | — |
| Successor | GeForce 700 | — |
Clocks
| GPU clock | 824 MHz | 620 MHz |
|---|---|---|
| Memory clock | 1000 MHz 4 Gbps effective | 750 MHz 3 Gbps effective |
| Shader clock | — | 1240 MHz |
Memory Configuration
| Memory size | 1024 MB | 2 GB |
|---|---|---|
| Memory type | GDDR5 | GDDR5 |
| Memory bus width | 128 bit | 256 bit |
| Bandwidth | 64.00 GB/s | 96.00 GB/s |
Render Configuration
| Shading units | 576 | 384 |
|---|---|---|
| TMUs | 48 | 64 |
| ROPs | 16 | 32 |
| SMX count | 3 | — |
| Cache L1 | 16 KB (per SMX) | 64 KB (per SM) |
| Cache L2 | 256 KB | 512 KB |
| SM count | — | 8 |
Performance
| Pixel rate | 9.888 GPixel/s | 9.920 GPixel/s |
|---|---|---|
| Texture rate | 39.55 GTexel/s | 39.68 GTexel/s |
| FP32 (float) performance | 949.2 GFLOPS | 952.3 GFLOPS |
| FP64 (double) performance | 39.55 GFLOPS (1:24) | 79.36 GFLOPS (1:12) |
Dimensions & Outputs
| Slot width | Single-slot | MXM Module |
|---|---|---|
| Length | 147 mm 5.8 inches | — |
| TDP | 65 W | 100 W |
| Suggested PSU | 250 W | — |
| Outputs | 1x DVI1x HDMI1x DisplayPort | No outputs |
| Power connectors | None | — |
| Board number | P2010 SKU 20 | — |
API Support & Features
| DirectX | 12 (11_0) | 12 (11_0) |
|---|---|---|
| OpenGL | 4.6 | 4.6 |
| OpenCL | 3.0 | 1.1 |
| Vulkan | 1.1 | — |
| CUDA | 3.0 | 2.1 |
| Shader model | 5.1 | 5.1 |
Other Features
Mobile graphics
| Release date | — | Mar 22nd, 2012 |
|---|---|---|
| Generation | — | GeForce 600M |
| Production | — | End-of-life |
| Interface | — | MXM-B (3.0) |
| Predecessor | — | GeForce 500M |
| Successor | — | GeForce 700M |
