NVIDIA GeForce GTX 850M vs NVIDIA GeForce GTX 950M Mac Edition
Graphics Processor
| GPU model | GM107 | GM107 |
|---|---|---|
| GPU variant | N15P-GT-A1 | N16P-GT |
| Architecture | Maxwell | Maxwell |
| Foundry | TSMC | TSMC |
| Manufacturing process | 28 nm | 28 nm |
| Number of transistors | 1,870 million | 1,870 million |
| Die size | 148 mm² | 148 mm² |
Mobile graphics
| Release date | Mar 12th, 2014 | Mar 13th, 2015 |
|---|---|---|
| Generation | GeForce 800M | GeForce 900M |
| Production | End-of-life | End-of-life |
| Interface | PCIe 3.0 x16 | MXM-B (3.0) |
| Predecessor | GeForce 700M | GeForce 800M |
| Successor | GeForce 900M | GeForce 10 Mobile |
Clocks
| GPU clock | 902 MHz | — |
|---|---|---|
| Memory clock | 1001 MHz 2 Gbps effective | 900 MHz 1800 Mbps effective |
| Base clock | — | 993 MHz |
| Boost clock | — | 1124 MHz |
Memory Configuration
| Memory size | 2 GB | 2 GB |
|---|---|---|
| Memory type | DDR3 | DDR3 |
| Memory bus width | 128 bit | 128 bit |
| Bandwidth | 32.03 GB/s | 28.80 GB/s |
Render Configuration
| Shading units | 640 | 640 |
|---|---|---|
| TMUs | 40 | 40 |
| ROPs | 16 | 16 |
| SMM count | 5 | 5 |
| Cache L1 | 64 KB (per SMM) | 64 KB (per SMM) |
| Cache L2 | 2 MB | 2 MB |
Performance
| Pixel rate | 14.43 GPixel/s | 17.98 GPixel/s |
|---|---|---|
| Texture rate | 36.08 GTexel/s | 44.96 GTexel/s |
| FP32 (float) performance | 1,155 GFLOPS | 1,439 GFLOPS |
| FP64 (double) performance | 36.08 GFLOPS (1:32) | 44.96 GFLOPS (1:32) |
Dimensions & Outputs
| Slot width | IGP | MXM Module |
|---|---|---|
| TDP | 45 W | 75 W |
| Outputs | No outputs | No outputs |
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 | 5.0 |
| Shader model | 5.1 | 5.1 |
