GeForce GT 640M Mac Edition vs Radeon HD 8400E
Aggregate performance score
We've compared Radeon HD 8400E and GeForce GT 640M Mac Edition, covering specs and all relevant benchmarks.
GT 640M Mac Edition outperforms HD 8400E by a considerable 46% based on our aggregate benchmark results.
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | 1168 | 1096 |
| Place by popularity | not in top-100 | not in top-100 |
| Power efficiency | 1.95 | 2.23 |
| Architecture | GCN 2.0 (2013−2017) | Kepler (2012−2018) |
| GPU code name | Kalindi | GK107 |
| Market segment | Laptop | Laptop |
| Release date | 23 April 2013 (11 years ago) | 3 February 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 | 128 | 384 |
| Core clock speed | 600 MHz | 745 MHz |
| Number of transistors | 1,178 million | 1,270 million |
| Manufacturing process technology | 28 nm | 28 nm |
| Power consumption (TDP) | 25 Watt | 32 Watt |
| Texture fill rate | 4.800 | 23.84 |
| Floating-point processing power | 0.1536 TFLOPS | 0.5722 TFLOPS |
| ROPs | 4 | 8 |
| TMUs | 8 | 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 | IGP | PCIe 3.0 x16 |
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 | GDDR5 |
| Maximum RAM amount | System Shared | 512 MB |
| Memory bus width | System Shared | 64 Bit |
| Memory clock speed | System Shared | 1250 MHz |
| Memory bandwidth | no data | 40 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 (12_0) | 12 (11_0) |
| Shader Model | 6.3 | 5.1 |
| OpenGL | 4.6 | 4.6 |
| OpenCL | 2.0 | 1.2 |
| Vulkan | 1.2.131 | 1.1.126 |
| CUDA | - | 3.0 |
Gaming performance
Let's see how good the compared graphics cards are for gaming. Particular gaming benchmark results are measured in FPS.
Pros & cons summary
| Performance score | 0.71 | 1.04 |
| Recency | 23 April 2013 | 3 February 2013 |
| Power consumption (TDP) | 25 Watt | 32 Watt |
HD 8400E has an age advantage of 2 months, and 28% lower power consumption.
GT 640M Mac Edition, on the other hand, has a 46.5% higher aggregate performance score.
The GeForce GT 640M Mac Edition is our recommended choice as it beats the Radeon HD 8400E in performance tests.
Should you still have questions concerning choice between the reviewed GPUs, ask them in Comments section, and we shall answer.
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