NVIDIA GeForce GTX 850M vs NVIDIA GeForce GTX 860M
Graphics Processor
| GPU model | GM107 | GK104 |
|---|---|---|
| GPU variant | N15P-GT-A1 | N15P-GX-A1 |
| 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 12th, 2014 | Mar 10th, 2014 |
|---|---|---|
| Generation | GeForce 800M | GeForce 800M |
| Production | End-of-life | End-of-life |
| Interface | PCIe 3.0 x16 | PCIe 3.0 x16 |
| Predecessor | GeForce 700M | GeForce 700M |
| Successor | GeForce 900M | GeForce 900M |
Clocks
| GPU clock | 902 MHz | — |
|---|---|---|
| Memory clock | 1001 MHz 2 Gbps effective | 1250 MHz 5 Gbps effective |
| Base clock | — | 797 MHz |
| Boost clock | — | 915 MHz |
Memory Configuration
| Memory size | 2 GB | 2 GB |
|---|---|---|
| Memory type | DDR3 | GDDR5 |
| Memory bus width | 128 bit | 128 bit |
| Bandwidth | 32.03 GB/s | 80.00 GB/s |
Render Configuration
| Shading units | 640 | 1152 |
|---|---|---|
| TMUs | 40 | 96 |
| ROPs | 16 | 16 |
| SMM count | 5 | — |
| Cache L1 | 64 KB (per SMM) | 16 KB (per SMX) |
| Cache L2 | 2 MB | 256 KB |
| SMX count | — | 6 |
Performance
| Pixel rate | 14.43 GPixel/s | 21.96 GPixel/s |
|---|---|---|
| Texture rate | 36.08 GTexel/s | 87.84 GTexel/s |
| FP32 (float) performance | 1,155 GFLOPS | 2.108 TFLOPS |
| FP64 (double) performance | 36.08 GFLOPS (1:32) | 87.84 GFLOPS (1:24) |
Dimensions & Outputs
| Slot width | IGP | IGP |
|---|---|---|
| TDP | 45 W | 75 W |
| Outputs | No outputs | No outputs |
| Power connectors | — | None |
| Board number | — | P2053 SKU 4 |
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 |
