Radeon R9 255 OEM vs HD 7400G
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in performance ranking | 1178 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Architecture | Terascale 3 (2010−2013) | GCN 1.0 (2012−2020) |
| GPU code name | Trinity | Cape Verde |
| Market segment | Laptop | Desktop |
| Release date | 1 September 2012 (12 years ago) | 21 December 2013 (10 years ago) |
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 | 192 | 512 |
| Core clock speed | 327 MHz | 900 MHz |
| Boost clock speed | 423 MHz | 930 MHz |
| Number of transistors | 1,303 million | 1,500 million |
| Manufacturing process technology | 32 nm | 28 nm |
| Power consumption (TDP) | 17 Watt | 65 Watt |
| Texture fill rate | 5.088 | 29.76 |
| Floating-point performance | 0.1628 gflops | 0.9523 gflops |
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 x16 |
| Width | no data | 2-slot |
| Supplementary power connectors | no data | 1x 6-pin |
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 | no data | GDDR5 |
| Maximum RAM amount | System Shared | 2 GB |
| Memory bus width | no data | 128 Bit |
| Memory clock speed | no data | 4600 MHz |
| Memory bandwidth | no data | 73.6 GB/s |
| Shared memory | + | - |
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 | No outputs |
API compatibility
List of supported graphics and general-purpose computing APIs, including their specific versions.
| DirectX | 11.2 (11_0) | 12 (11_1) |
| Shader Model | 5.0 | 5.1 |
| OpenGL | 4.4 | 4.6 |
| OpenCL | 1.2 | 1.2 |
| Vulkan | N/A | 1.2.131 |
Pros & cons summary
| Recency | 1 September 2012 | 21 December 2013 |
| Chip lithography | 32 nm | 28 nm |
| Power consumption (TDP) | 17 Watt | 65 Watt |
HD 7400G has 282.4% lower power consumption.
R9 255 OEM, on the other hand, has an age advantage of 1 year, and a 14.3% more advanced lithography process.
We couldn't decide between Radeon HD 7400G and Radeon R9 255 OEM. We've got no test results to judge.
Be aware that Radeon HD 7400G is a notebook card while Radeon R9 255 OEM 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.
