ATI Radeon HD 3870 Mac Edition vs R6 M255DX
Contents
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | 1012 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Architecture | GCN 1.0 (2012−2020) | TeraScale (2005−2013) |
| GPU code name | Jet | RV670 |
| Market segment | Laptop | Desktop |
| Release date | 7 January 2014 (11 years ago) | 12 June 2008 (17 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 | 320 | 320 |
| Core clock speed | 780 MHz | 777 MHz |
| Boost clock speed | 855 MHz | no data |
| Number of transistors | 690 million | 666 million |
| Manufacturing process technology | 28 nm | 55 nm |
| Power consumption (TDP) | no data | 106 Watt |
| Texture fill rate | 17.10 | 12.43 |
| Floating-point processing power | 0.5472 TFLOPS | 0.4973 TFLOPS |
| ROPs | 8 | 16 |
| TMUs | 20 | 16 |
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 2.0 x16 |
| Length | no data | 241 mm |
| Width | no data | 1-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 | System Shared | GDDR4 |
| Maximum RAM amount | System Shared | 512 MB |
| Memory bus width | System Shared | 256 Bit |
| Memory clock speed | System Shared | 1126 MHz |
| Memory bandwidth | no data | 72.06 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 | 2x DVI, 1x S-Video |
| Eyefinity | + | - |
Supported technologies
Supported technological solutions. This information will prove useful if you need some particular technology for your purposes.
| AppAcceleration | + | - |
API and SDK compatibility
List of supported 3D and general-purpose computing APIs, including their specific versions.
| DirectX | 12 (11_1) | 10.1 (10_1) |
| Shader Model | 5.1 | 4.1 |
| OpenGL | 4.6 | 3.3 |
| OpenCL | 1.2 | N/A |
| Vulkan | 1.2.131 | N/A |
Pros & cons summary
| Recency | 7 January 2014 | 12 June 2008 |
| Chip lithography | 28 nm | 55 nm |
R6 M255DX has an age advantage of 5 years, and a 96.4% more advanced lithography process.
We couldn't decide between Radeon R6 M255DX and Radeon HD 3870 Mac Edition. We've got no test results to judge.
Be aware that Radeon R6 M255DX is a notebook graphics card while Radeon HD 3870 Mac Edition is a desktop one.
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