Radeon R9 255 OEM vs R9 M290X
Contents
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | 567 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Power efficiency | 5.89 | no data |
| Architecture | GCN 1.0 (2012−2020) | GCN 1.0 (2012−2020) |
| GPU code name | Neptune | Cape Verde |
| Market segment | Laptop | Desktop |
| Release date | 9 January 2014 (11 years ago) | 21 December 2013 (11 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 | 1280 | 512 |
| Compute units | 20 | no data |
| Core clock speed | 850 MHz | 900 MHz |
| Boost clock speed | 900 MHz | 930 MHz |
| Number of transistors | 2,800 million | 1,500 million |
| Manufacturing process technology | 28 nm | 28 nm |
| Power consumption (TDP) | 100 Watt | 65 Watt |
| Texture fill rate | 72.00 | 29.76 |
| Floating-point processing power | 2.304 TFLOPS | 0.9523 TFLOPS |
| ROPs | 32 | 16 |
| TMUs | 80 | 32 |
| L1 Cache | 320 KB | 128 KB |
| L2 Cache | 512 KB | 256 KB |
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 x16 | no data |
| Interface | PCIe 3.0 x16 | PCIe 3.0 x16 |
| Width | no data | 2-slot |
| Supplementary power connectors | None | 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 | GDDR5 | GDDR5 |
| Maximum RAM amount | 4 GB | 2 GB |
| Memory bus width | 256 Bit | 128 Bit |
| Memory clock speed | 1200 MHz | 1150 MHz |
| Memory bandwidth | 153.6 GB/s | 73.6 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 | Portable Device Dependent | No outputs |
| 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® 11 | 12 (11_1) |
| Shader Model | 6.5 (5.1) | 5.1 |
| OpenGL | 4.4 | 4.6 |
| OpenCL | Not Listed | 1.2 |
| Vulkan | - | 1.2.131 |
| Mantle | + | - |
Pros & cons summary
| Maximum RAM amount | 4 GB | 2 GB |
| Power consumption (TDP) | 100 Watt | 65 Watt |
R9 M290X has a 100% higher maximum VRAM amount.
R9 255 OEM, on the other hand, has 53.8% lower power consumption.
We couldn't decide between Radeon R9 M290X and Radeon R9 255 OEM. We've got no test results to judge.
Be aware that Radeon R9 M290X is a notebook graphics card while Radeon R9 255 OEM is a desktop one.
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