Radeon R5 A255 vs HD 7420G
Contents
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | 1220 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Power efficiency | 1.65 | no data |
| Architecture | TeraScale 3 (2010−2013) | GCN 3.0 (2014−2019) |
| GPU code name | Scrapper Lite | Topaz |
| Market segment | Laptop | Desktop |
| Release date | 6 June 2012 (13 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. Note that power consumption of some graphics cards can well exceed their nominal TDP, especially when overclocked.
| Pipelines / CUDA cores | 128 | 384 |
| Core clock speed | 480 MHz | 925 MHz |
| Boost clock speed | 655 MHz | 940 MHz |
| Number of transistors | 1,303 million | 1,550 million |
| Manufacturing process technology | 32 nm | 28 nm |
| Power consumption (TDP) | 35 Watt | no data |
| Texture fill rate | 5.240 | 22.56 |
| Floating-point processing power | 0.1677 TFLOPS | no data |
| ROPs | 4 | 8 |
| TMUs | 8 | 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 | medium sized | no data |
| Interface | IGP | 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 | System Shared | GDDR5 |
| Maximum RAM amount | System Shared | 1 GB |
| Memory bus width | System Shared | 128 Bit |
| Memory clock speed | System Shared | 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 outputs | Portable Device Dependent |
API and SDK support
List of supported 3D and general-purpose computing APIs, including their specific versions.
| DirectX | 11.2 (11_0) | 12 (12_0) |
| Shader Model | 5.0 | 6.5 |
| OpenGL | 4.4 | 4.6 |
| OpenCL | 1.2 | 2.1 |
| Vulkan | N/A | 1.2.170 |
Other comparisons
We selected several comparisons of graphics cards with performance close to those reviewed, providing you with more options to consider.
