Radeon R5 A255 vs ATI Mobility X800 XT
Contents
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | not rated | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Architecture | R400 (2004−2008) | GCN 3.0 (2014−2019) |
| GPU code name | M28 | Topaz |
| Market segment | Laptop | Desktop |
| Release date | 1 June 2005 (21 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 | no data | 384 |
| Core clock speed | 480 MHz | 925 MHz |
| Boost clock speed | no data | 940 MHz |
| Number of transistors | 160 million | 1,550 million |
| Manufacturing process technology | 130 nm | 28 nm |
| Texture fill rate | 7.680 | 22.56 |
| ROPs | 16 | 8 |
| TMUs | 16 | 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).
| Interface | PCIe 1.0 x16 | 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 | GDDR3 | GDDR5 |
| Maximum RAM amount | 256 MB | 1 GB |
| Memory bus width | 256 Bit | 128 Bit |
| Memory clock speed | 550 MHz | 4 GB/s |
| Memory bandwidth | 35.2 GB/s | 64 GB/s |
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 outputs | Portable Device Dependent |
API and SDK support
List of supported 3D and general-purpose computing APIs, including their specific versions.
| DirectX | 9.0b (9_2) | 12 (12_0) |
| Shader Model | no data | 6.5 |
| OpenGL | 2.0 | 4.6 |
| OpenCL | N/A | 2.1 |
| Vulkan | N/A | 1.2.170 |
Pros & cons summary
| Maximum RAM amount | 256 MB | 1 GB |
| Chip lithography | 130 nm | 28 nm |
R5 A255 has a 300% higher maximum VRAM amount, and a 364% more advanced lithography process.
We couldn't decide between Mobility Radeon X800 XT and Radeon R5 A255. We've got no test results to judge.
Be aware that Mobility Radeon X800 XT is a notebook graphics card while Radeon R5 A255 is a desktop one.
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