NVIDIA GeForce 940M vs NVIDIA GeForce GTX 670
Graphics Processor
| GPU model | GM107 | GK104 |
|---|---|---|
| GPU variant | N16S-GT1-KB-B | GK104-325-A2 |
| Architecture | Maxwell | Kepler |
| Foundry | TSMC | TSMC |
| Manufacturing process | 28 nm | 28 nm |
| Number of transistors | 1,870 million | 3,540 million |
| Die size | 148 mm² | 294 mm² |
Mobile graphics
| Release date | Mar 13th, 2015 | — |
|---|---|---|
| Generation | GeForce 900M | — |
| Production | End-of-life | — |
| Interface | MXM-B (3.0) | — |
| Predecessor | GeForce 800M | — |
| Successor | GeForce 10 Mobile | — |
Clocks
| Base clock | 1020 MHz | 915 MHz |
|---|---|---|
| Boost clock | 1098 MHz | 980 MHz |
| Memory clock | 900 MHz 1800 Mbps effective | 1502 MHz 6 Gbps effective |
Memory Configuration
| Memory size | 2 GB | 2 GB |
|---|---|---|
| Memory type | DDR3 | GDDR5 |
| Memory bus width | 64 bit | 256 bit |
| Bandwidth | 14.40 GB/s | 192.3 GB/s |
Render Configuration
| Shading units | 512 | 1344 |
|---|---|---|
| TMUs | 32 | 112 |
| ROPs | 16 | 32 |
| SMM count | 4 | — |
| Cache L1 | 64 KB (per SMM) | 16 KB (per SMX) |
| Cache L2 | 2 MB | 512 KB |
| SMX count | — | 7 |
Performance
| Pixel rate | 17.57 GPixel/s | 27.44 GPixel/s |
|---|---|---|
| Texture rate | 35.14 GTexel/s | 109.8 GTexel/s |
| FP32 (float) performance | 1,124 GFLOPS | 2.634 TFLOPS |
| FP64 (double) performance | 35.14 GFLOPS (1:32) | 109.8 GFLOPS (1:24) |
Dimensions & Outputs
| Slot width | MXM Module | Dual-slot |
|---|---|---|
| TDP | 75 W | 170 W |
| Outputs | No outputs | 2x DVI1x HDMI1x DisplayPort |
| Length | — | 241 mm 9.5 inches |
| Width | — | 111 mm 4.4 inches |
| Height | — | 38 mm 1.5 inches |
| Suggested PSU | — | 450 W |
| Power connectors | — | 2x 6-pin |
| Board number | — | P2004 |
API Support & Features
| DirectX | 12 (11_0) | 12 (11_0) |
|---|---|---|
| OpenGL | 4.6 | 4.6 |
| OpenCL | 3.0 | 3.0 |
| Vulkan | 1.1 | 1.1 |
| CUDA | 5.0 | 3.0 |
| Shader model | 5.1 | 5.1 |
Other Features
Graphics Card
| Release date | — | May 10th, 2012 |
|---|---|---|
| Generation | — | GeForce 600 |
| Production | — | End-of-life |
| Launch price | — | 399 USD |
| Interface | — | PCIe 3.0 x16 |
| Reviews | — | 108 in our database |
| Predecessor | — | GeForce 500 |
| Successor | — | GeForce 700 |
