Gaming Performance Comparison
In terms of overall gaming performance, the graphical capabilities of the AMD Radeon HD 8670M are significantly better than the AMD Radeon HD 8400.
The Radeon HD 8670M has a 175 MHz higher core clock speed and 16 more Texture Mapping Units than the Radeon HD 8400. This results in the Radeon HD 8670M providing 13.8 GTexel/s better texturing performance. This still holds weight but shader performance is generally more relevant, particularly since both of these GPUs support at least DirectX 10.
The Radeon HD 8670M has a 175 MHz higher core clock speed and 4 more Render Output Units than the Radeon HD 8400. This results in the Radeon HD 8670M providing 3.8 GPixel/s better pixeling performance. However, both GPUs support DirectX 9 or above, and pixeling performance is only really relevant when comparing older cards.
The Radeon HD 8400 was released less than a year after the Radeon HD 8670M, and so they are likely to have similar driver support for optimizing performance when running the latest games.
The Radeon HD 8670M has 1024 MB video memory, but the Radeon HD 8400 does not have an entry, so the two GPUs cannot be reliably compared in this area.
The Radeon HD 8400 has 128 Shader Processing Units and the Radeon HD 8670M has 384. However, the actual shader performance of the Radeon HD 8400 is 50 and the actual shader performance of the Radeon HD 8670M is 285. The Radeon HD 8670M having 235 better shader performance and an altogether better performance when taking into account other relevant data means that the Radeon HD 8670M delivers a marginally smoother and more efficient experience when processing graphical data than the Radeon HD 8400.
The Radeon HD 8400 requires 25 Watts to run but there is no entry for the Radeon HD 8670M.
Check any game system requirements
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| Core Speed | 600 MHz | | vs |  | 775 MHz |
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| Architecture | Kalindi | | | | GCN 1.1 Mars XT |
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| Notebook GPU | yes | | | | yes |
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| SLI/Crossfire | no | | vs | | no |
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| Dedicated | no | | vs |  | yes |
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| Release Date | 23 May 2013 | | | | 01 Mar 2013 |
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| GPU Link | GD Link | | | | GD Link |
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| Approved |  | | | |  |
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| Comparison | | | | | |
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| Memory | - | | vs |  | 1024 MB |
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| Memory Speed | 800 MHz | | vs |  | 900 MHz |
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| Memory Bus | 128 Bit |  | vs | | 64 Bit |
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| Memory Type | DDR3 |  | vs |  | DDR3 |
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| Memory Bandwidth | 25.6GB/sec |  | vs | | 14.4GB/sec |
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| L2 Cache |
- |
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vs |
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256 KB |
| Comparison | | | | | |
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| Shader Processing Units | 128 | | vs |  | 384 |
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| Actual Shader Performance | 50 | | vs |  | 285 |
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| Technology | 28nm |  | vs |  | 28nm |
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| Texture Mapping Units | 8 | | vs |  | 24 |
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| Texture Rate | 4.8 GTexel/s | | vs |  | 18.6 GTexel/s |
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| Render Output Units | 4 | | vs |  | 8 |
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| Pixel Rate | 2.4 GPixel/s | | vs |  | 6.2 GPixel/s |
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| Comparison | | | | | |
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| DirectX | 11.1 |  | vs |  | 11.1 |
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| Shader Model | 5.0 |  | vs |  | 5.0 |
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| Open GL | 4.3 |  | vs | | 4.2 |
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| Max Resolution (WxH) | - | | vs |  | 2560x1600 |
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| VGA Connections | 0 | | vs | | 0 |
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| DVI Connections | 0 | | vs | | 0 |
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| HDMI Connections | 0 | | vs | | 0 |
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| Comparison | | | | | |
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| Recommended RAM | - | | | | 4 GB |
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| Recommended Screen Size | - | | | | 1366x768 |
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| Recommended PSU | - | | | | - |
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| Performance Value | | |  | | |
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| Mini Review | Radeon HD 8400 is an integrated graphics card on some of the Kabini APUs.
It is based on the Graphics Core Next Architecture and shares the main system memory of up to 800MHz, on a 128-bit memory interface, whereas the memory bandwidth and performance will depend heavily on the laptop configuration.
The codenamed Kalindi Core offers 128 Shader Processing Units, 8 TMUs and 4 ROPs.
Assuming the best combination possible, expect performance similar to an Intel HD 4000 and never below an Intel HD 3000. Thus, the card is only suited for modest 3D games and titles like BF4, AC4 and CoD: Ghosts are unplayable. | | | | Radeon HD 8670M is a middle-class Graphics Card based on the GCN architecture.
It features the Mars XT GPU and thus offers 384 Shader Processing Units, 24 TMUs and 8 ROPs. The central unit can be initially clocked at up to 775MHz reach up to 825MHz in Turbo Mode while the memory interface is of 64-bit of standard DDR3.
It can be addressed as a fast Radeon HD 8550M due to its considerably higher core-clock speed.
Benchmarks indicate its performance is somewhat above NVIDIA's GeForce GT 630M and thus the card can run most modern games at medium games. |
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| Recommended CPU | - | | | | - |
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| Possible GPU Upgrades | - | | | | - |
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| GPU Variants | - | | | | - |
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