AMD Radeon R5 A255: specs and benchmarks
Summary
AMD started Radeon R5 A255 sales on 2014. This is a desktop graphics card based on a GCN 3.0 architecture and made with 28 nm manufacturing process. It is primarily aimed at gamer market. 1 GB of GDDR5 memory clocked at 4 GB/s are supplied, and together with 128 Bit memory interface this creates a bandwidth of 64 GB/s.
Compatibility-wise, this is a graphics card attached via PCIe 3.0 x8 interface.
Primary details
Some basic facts about Radeon R5 A255: architecture, market segment, release date etc.
| Place in the ranking | not rated | |
| Place by popularity | not in top-100 | |
| Architecture | GCN 3.0 (2014−2019) | |
| GPU code name | Topaz | |
| Market segment | Desktop | |
| Release date | 2014 (10 years ago) |
Detailed specifications
Radeon R5 A255's specs such as number of shaders, GPU base clock, manufacturing process, texturing and calculation speed. These parameters indirectly speak of Radeon R5 A255's performance, but for precise assessment you have to consider its benchmark and gaming test results.
| Pipelines / CUDA cores | 384 | of 21760 (GeForce RTX 5090) |
| Core clock speed | 925 MHz | of 2670 MHz (Arc B580) |
| Boost clock speed | 940 MHz | of 3599 MHz (Radeon RX 7990 XTX) |
| Number of transistors | 1,550 million | of 208,000 million (B200 SXM 192 GB) |
| Manufacturing process technology | 28 nm | of 3 nm (Arc Graphics 140V) |
| Texture fill rate | 22.56 | of 2,554 (Radeon Instinct MI300X) |
| ROPs | 8 | of 192 (GRID A100A) |
| TMUs | 24 | of 1280 (Data Center GPU Max NEXT) |
Form factor & compatibility
This section provides details about the physical dimensions of Radeon R5 A255 and its compatibility with other computer components. This information is useful when selecting a computer configuration or upgrading an existing one. For desktop graphics cards, it includes details about the interface and bus (for motherboard compatibility) and additional power connectors (for power supply compatibility).
| Interface | PCIe 3.0 x8 |
VRAM capacity and type
Parameters of memory installed on Radeon R5 A255: its type, size, bus, clock and resulting bandwidth. Note that GPUs integrated into processors have no dedicated memory and use a shared part of system RAM instead.
| Memory type | GDDR5 | |
| Maximum RAM amount | 1 GB | of 294912 (Radeon Instinct MI325X) |
| Memory bus width | 128 Bit | of 8192 Bit (Radeon Instinct MI250X) |
| Memory clock speed | 4 GB/s | of 20000 (RTX 5000 Ada Generation Mobile) |
| Memory bandwidth | 64 GB/s | of 5,171 GB/s (Radeon Instinct MI300X) |
Connectivity and outputs
Types and number of video connectors present on Radeon R5 A255. As a rule, this section is relevant only for desktop reference graphics cards, since for notebook ones the availability of certain video outputs depends on the laptop model, while non-reference desktop models can (though not necessarily will) bear a different set of video ports.
| Display Connectors | Portable Device Dependent |
API compatibility
APIs supported by Radeon R5 A255, sometimes including their particular versions.
| DirectX | 12 (12_0) | |
| Shader Model | 6.5 | |
| OpenGL | 4.6 | |
| OpenCL | 2.1 | |
| Vulkan | 1.2.170 |
Similar GPUs
Here is our recommendation of several graphics cards that are more or less close in performance to the one reviewed.
Recommended processors
These processors are most commonly used with Radeon R5 A255 according to our statistics.
