GM20B vs Maxwell GPU Surface Book (940M, GDDR5)
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in performance ranking | 679 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Architecture | Maxwell (2014−2018) | Maxwell 2.0 (2015−2019) |
| GPU code name | Surface Book | GM20B |
| Market segment | Laptop | Desktop |
| Release date | 1 October 2015 (8 years ago) | no data |
| Current price | no data | $158 |
Detailed specifications
General performance parameters such as number of shaders, GPU core base clock and boost clock speeds, manufacturing process, texturing and calculation speed. These parameters indirectly speak of performance, but for precise assessment you have to consider their benchmark and gaming test results. Note that power consumption of some graphics cards can well exceed their nominal TDP, especially when overclocked.
| Pipelines / CUDA cores | 384 | 256 |
| Core clock speed | 954 MHz | no data |
| Boost clock speed | 993 MHz | no data |
| Number of transistors | no data | 2,000 million |
| Manufacturing process technology | 28 nm | 20 nm |
VRAM capacity and type
Parameters of VRAM installed: its type, size, bus, clock and resulting bandwidth. Integrated GPUs have no dedicated video RAM and use a shared part of system RAM.
| Memory type | GDDR5 | no data |
| Maximum RAM amount | 1 GB | no data |
| Memory bus width | 64 Bit | no data |
| Memory clock speed | 5012 MHz | no data |
| Shared memory | - | no data |
Supported technologies
Supported technological solutions. This information will prove useful if you need some particular technology for your purposes.
| Optimus | + | no data |
| PureVideo HD | no data | VP9 |
API compatibility
List of supported graphics and general-purpose computing APIs, including their specific versions.
| DirectX | DirectX 12 (FL 11_0), Shader 5.0 | 12 (12_1) |
| Shader Model | no data | 6.0 |
| OpenGL | no data | 4.6 |
| OpenCL | no data | 1.2 |
| Vulkan | no data | 1.1 |
| CUDA | + | 5.3 |
Pros & cons summary
| Chip lithography | 28 nm | 20 nm |
We couldn't decide between Maxwell GPU Surface Book (940M, GDDR5) and GM20B. We've got no test results to judge.
Be aware that Maxwell GPU Surface Book (940M, GDDR5) is a notebook card while GM20B is a desktop one.
Should you still have questions concerning choice between the reviewed GPUs, ask them in Comments section, and we shall answer.
Comparisons with similar GPUs
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