ATI Mobility Radeon HD 4670 Mac Edition vs R5 M420
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | 1033 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Architecture | GCN 1.0 (2011−2020) | TeraScale (2005−2013) |
| GPU code name | Jet | M96 |
| Market segment | Laptop | Laptop |
| Release date | 15 May 2016 (8 years ago) | 16 September 2009 (15 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 | 680 MHz |
| Boost clock speed | 850 MHz | no data |
| Number of transistors | 690 million | 514 million |
| Manufacturing process technology | 28 nm | 55 nm |
| Power consumption (TDP) | no data | 35 Watt |
| Texture fill rate | 17.00 | 21.76 |
| Floating-point processing power | 0.544 TFLOPS | 0.4352 TFLOPS |
| ROPs | 8 | 8 |
| TMUs | 20 | 32 |
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 3.0 x8 | MXM-A (3.0) |
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 | DDR3 | GDDR3 |
| Maximum RAM amount | 4 GB | 256 MB |
| Memory bus width | 64 Bit | 128 Bit |
| Memory clock speed | 1000 MHz | 790 MHz |
| Memory bandwidth | 16 GB/s | 25.28 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 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 | 1.1 |
| Vulkan | 1.2.131 | N/A |
Pros & cons summary
| Recency | 15 May 2016 | 16 September 2009 |
| Maximum RAM amount | 4 GB | 256 MB |
| Chip lithography | 28 nm | 55 nm |
R5 M420 has an age advantage of 6 years, a 1500% higher maximum VRAM amount, and a 96.4% more advanced lithography process.
We couldn't decide between Radeon R5 M420 and Mobility Radeon HD 4670 Mac Edition. We've got no test results to judge.
Should you still have questions concerning choice between the reviewed GPUs, ask them in Comments section, and we shall answer.
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