Radeon R5 A255 vs R9 M390
Contents
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | 527 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Architecture | GCN (2012−2015) | GCN 3.0 (2014−2019) |
| GPU code name | Pitcairn | Topaz |
| Market segment | Laptop | Desktop |
| Release date | 9 June 2015 (10 years ago) | 2014 (12 years ago) |
Detailed specifications
General parameters such as number of shaders, GPU core base clock and boost clock speeds, manufacturing process, texturing and calculation speed. Real power consumption of some graphics cards can well exceed their nominal TDP, especially if overclocked.
| Pipelines / CUDA cores | 1024 | 384 |
| Core clock speed | no data | 925 MHz |
| Boost clock speed | no data | 940 MHz |
| Number of transistors | 5000 Million | 1,550 million |
| Manufacturing process technology | 28 nm | 28 nm |
| Texture fill rate | no data | 22.56 |
| ROPs | no data | 8 |
| TMUs | no data | 24 |
Form factor & compatibility
Information on compatibility with other computer components. Useful when choosing a future computer configuration or upgrading an existing one. For desktop graphics cards it's interface and bus (motherboard compatibility), additional power connectors (power supply compatibility).
| Laptop size | large | no data |
| Bus support | PCIe 3.0 | no data |
| 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 | 2 GB | 1 GB |
| Memory bus width | 256 Bit | 128 Bit |
| Memory clock speed | no data | 4 GB/s |
| Memory bandwidth | no data | 64 GB/s |
| Shared memory | - | - |
Connectivity and outputs
This section shows the types and number of video connectors on each GPU. The data applies specifically to desktop reference models (for example, NVIDIA’s Founders Edition). OEM partners often modify both the number and types of ports. On notebook GPUs, video‐output options are determined by the laptop’s design rather than the graphics chip itself.
| Display Connectors | no data | Portable Device Dependent |
| Eyefinity | + | - |
Supported technologies
Supported technological solutions. This information will prove useful if you need some particular technology for your purposes.
| FreeSync | + | - |
| HD3D | + | - |
| PowerTune | + | - |
| DualGraphics | + | - |
| ZeroCore | + | - |
| Switchable graphics | + | - |
API and SDK support
List of supported 3D and general-purpose computing APIs, including their specific versions.
| DirectX | DirectX® 12 | 12 (12_0) |
| Shader Model | no data | 6.5 |
| OpenGL | 4.4 | 4.6 |
| OpenCL | Not Listed | 2.1 |
| Vulkan | - | 1.2.170 |
| Mantle | + | - |
Other comparisons
We selected several comparisons of graphics cards with performance close to those reviewed, providing you with more options to consider.
