Radeon 550X Mobile 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 | 678 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Architecture | Maxwell (2014−2018) | GCN 4.0 (2016−2020) |
| GPU code name | Surface Book | Polaris 23 |
| Market segment | Laptop | Laptop |
| Release date | 1 October 2015 (8 years ago) | 11 April 2018 (6 years ago) |
| Current price | no data | $467 |
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 | 640 |
| Core clock speed | 954 MHz | 1100 MHz |
| Boost clock speed | 993 MHz | 1287 MHz |
| Number of transistors | no data | 2,200 million |
| Manufacturing process technology | 28 nm | 14 nm |
| Power consumption (TDP) | no data | 50 Watt |
| Texture fill rate | no data | 51.48 |
| Floating-point performance | no data | 1,647 gflops |
Form factor & compatibility
Information on Maxwell GPU Surface Book (940M, GDDR5) and Radeon 550X Mobile compatibility with other computer components. Useful when choosing a future computer configuration or upgrading an existing one. For notebook video cards it's notebook size, connection slot and bus, if the video card is inserted into a slot instead of being soldered to the notebook motherboard.
| Interface | no data | PCIe 3.0 x8 |
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 | GDDR5 |
| Maximum RAM amount | 1 GB | 4 GB |
| Memory bus width | 64 Bit | 64 Bit |
| Memory clock speed | 5012 MHz | 6000 MHz |
| Memory bandwidth | no data | 48 GB/s |
| Shared memory | - | no data |
Connectivity and outputs
Types and number of video connectors present on the reviewed GPUs. As a rule, data in this section is precise only for desktop reference ones (so-called Founders Edition for NVIDIA chips). OEM manufacturers may change the number and type of output ports, while for notebook cards availability of certain video outputs ports depends on the laptop model rather than on the card itself.
| Display Connectors | no data | No outputs |
Supported technologies
Supported technological solutions. This information will prove useful if you need some particular technology for your purposes.
| Optimus | + | no data |
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_0) |
| Shader Model | no data | 6.4 |
| OpenGL | no data | 4.6 |
| OpenCL | no data | 2.0 |
| Vulkan | no data | 1.2.131 |
| CUDA | + | no data |
Pros & cons summary
| Recency | 1 October 2015 | 11 April 2018 |
| Maximum RAM amount | 1 GB | 4 GB |
| Chip lithography | 28 nm | 14 nm |
We couldn't decide between Maxwell GPU Surface Book (940M, GDDR5) and Radeon 550X Mobile. We've got no test results to judge.
Should you still have questions concerning choice between the reviewed GPUs, ask them in Comments section, and we shall answer.
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