GeForce GT 640M Mac Edition vs 830A
Aggregate performance score
We've compared GeForce 830A and GeForce GT 640M Mac Edition, covering specs and all relevant benchmarks.
830A outperforms GT 640M Mac Edition by a whopping 197% based on our aggregate benchmark results.
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | 765 | 1096 |
| Place by popularity | not in top-100 | not in top-100 |
| Power efficiency | 6.48 | 2.25 |
| Architecture | Maxwell (2014−2017) | Kepler (2012−2018) |
| GPU code name | GM108 | GK107 |
| Market segment | Laptop | Laptop |
| Release date | 22 July 2014 (10 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 | 256 | 384 |
| Core clock speed | 1082 MHz | 745 MHz |
| Boost clock speed | 1150 MHz | no data |
| Number of transistors | no data | 1,270 million |
| Manufacturing process technology | 28 nm | 28 nm |
| Power consumption (TDP) | 33 Watt | 32 Watt |
| Texture fill rate | 18.40 | 23.84 |
| Floating-point processing power | 0.5888 TFLOPS | 0.5722 TFLOPS |
| ROPs | 8 | 8 |
| TMUs | 16 | 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 | 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 | DDR3 | GDDR5 |
| Maximum RAM amount | 2 GB | 512 MB |
| Memory bus width | 64 Bit | 64 Bit |
| Memory clock speed | 900 MHz | 1250 MHz |
| Memory bandwidth | 14.4 GB/s | 40 GB/s |
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_0) | 12 (11_0) |
| Shader Model | 5.1 | 5.1 |
| OpenGL | 4.6 | 4.6 |
| OpenCL | 1.2 | 1.2 |
| Vulkan | 1.1.126 | 1.1.126 |
| CUDA | 5.0 | 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 | 3.09 | 1.04 |
| Recency | 22 July 2014 | 3 February 2013 |
| Maximum RAM amount | 2 GB | 512 MB |
| Power consumption (TDP) | 33 Watt | 32 Watt |
GeForce 830A has a 197.1% higher aggregate performance score, an age advantage of 1 year, and a 300% higher maximum VRAM amount.
GT 640M Mac Edition, on the other hand, has 3.1% lower power consumption.
The GeForce 830A is our recommended choice as it beats the GeForce GT 640M Mac Edition 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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