NVIDIA GeForce 940MX vs NVIDIA GeForce GT 555M
Graphics Processor
| GPU model | GM107 | GF106 |
|---|---|---|
| GPU variant | N16S-GT1R | N12E-GE-B-A1 |
| Architecture | Maxwell | Fermi |
| Foundry | TSMC | TSMC |
| Manufacturing process | 28 nm | 40 nm |
| Number of transistors | 1,870 million | 1,170 million |
| Die size | 148 mm² | 238 mm² |
Mobile graphics
| Release date | Jun 28th, 2016 | Oct 27th, 2011 |
|---|---|---|
| Generation | GeForce 900M | GeForce 500M |
| Production | End-of-life | End-of-life |
| Interface | PCIe 3.0 x8 | PCIe 2.0 x16 |
| Predecessor | GeForce 800M | GeForce 400M |
| Successor | GeForce 10 Mobile | GeForce 600M |
Clocks
| Base clock | 795 MHz | — |
|---|---|---|
| Boost clock | 861 MHz | — |
| Memory clock | 1253 MHz 5 Gbps effective | 900 MHz 1800 Mbps effective |
| GPU clock | — | 525 MHz |
| Shader clock | — | 1050 MHz |
Memory Configuration
| Memory size | 2 GB | 1024 MB |
|---|---|---|
| Memory type | GDDR5 | DDR3 |
| Memory bus width | 64 bit | 128 bit |
| Bandwidth | 40.10 GB/s | 28.80 GB/s |
Render Configuration
| Shading units | 512 | 144 |
|---|---|---|
| TMUs | 32 | 24 |
| ROPs | 8 | 16 |
| SMM count | 4 | — |
| Cache L1 | 64 KB (per SMM) | 64 KB (per SM) |
| Cache L2 | 1024 KB | 256 KB |
| SM count | — | 3 |
Performance
| Pixel rate | 6.888 GPixel/s | 3.150 GPixel/s |
|---|---|---|
| Texture rate | 27.55 GTexel/s | 12.60 GTexel/s |
| FP32 (float) performance | 881.7 GFLOPS | 302.4 GFLOPS |
| FP64 (double) performance | 27.55 GFLOPS (1:32) | 25.20 GFLOPS (1:12) |
Dimensions & Outputs
| Slot width | MXM Module | — |
|---|---|---|
| TDP | 23 W | 35 W |
| Outputs | No outputs | No outputs |
| Power connectors | None | — |
API Support & Features
| DirectX | 12 (11_0) | 12 (11_0) |
|---|---|---|
| OpenGL | 4.6 | 4.6 |
| OpenCL | 3.0 | 1.1 |
| Vulkan | 1.1 | — |
| CUDA | 5.0 | 2.1 |
| Shader model | 5.1 | 5.1 |
