Radeon RX 550 640SP vs R6 M255DX
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in performance ranking | 923 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Architecture | GCN (2011−2017) | GCN 4.0 (2016−2020) |
| GPU code name | Jet UL(T) DDR3 | Baffin |
| Market segment | Laptop | Desktop |
| Release date | 4 June 2014 (10 years ago) | 13 October 2017 (6 years ago) |
| Current price | no data | $99 |
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 | 576 | 640 |
| Core clock speed | 855 / 514 MHz | 1019 MHz |
| Boost clock speed | 940 MHz | 1071 MHz |
| Number of transistors | 690 million | 3,000 million |
| Manufacturing process technology | 28 nm | 14 nm |
| Power consumption (TDP) | no data | 60 Watt |
| Texture fill rate | 17.10 | 42.84 |
| Floating-point performance | no data | 1,371 gflops |
Form factor & compatibility
Information on Radeon R6 M255DX and Radeon RX 550 640SP compatibility with other computer components. Useful when choosing a future computer configuration or upgrading an existing one. For desktop video cards it's interface and bus (motherboard compatibility), additional power connectors (power supply compatibility). 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.
| Laptop size | medium sized | no data |
| Interface | IGP | PCIe 3.0 x8 |
| Length | no data | 145 mm |
| Width | no data | 2-slot |
| Supplementary power connectors | no data | None |
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 | DDR3 | GDDR5 |
| Maximum RAM amount | System Shared | 2 GB |
| Memory bus width | System Shared | 128 Bit |
| Memory clock speed | System Shared | 6000 MHz |
| Memory bandwidth | no data | 96 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 outputs | 1x DVI, 1x HDMI, 1x DisplayPort |
| Eyefinity | + | no data |
| HDMI | no data | + |
Supported technologies
Supported technological solutions. This information will prove useful if you need some particular technology for your purposes.
| AppAcceleration | + | no data |
API compatibility
List of supported graphics and general-purpose computing APIs, including their specific versions.
| DirectX | 12 (11_1) | 12 (12_0) |
| Shader Model | 5.1 | 6.4 |
| OpenGL | 4.6 | 4.6 |
| OpenCL | 1.2 | 2.0 |
| Vulkan | 1.2.131 | 1.2.131 |
Pros & cons summary
| Recency | 4 June 2014 | 13 October 2017 |
| Chip lithography | 28 nm | 14 nm |
We couldn't decide between Radeon R6 M255DX and Radeon RX 550 640SP. We've got no test results to judge.
Be aware that Radeon R6 M255DX is a notebook card while Radeon RX 550 640SP 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
We selected several comparisons of graphics cards with performance close to those reviewed, providing you with more options to consider.
