Iris Plus Graphics 940 vs GeForce GT 640M
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in performance ranking | 844 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Architecture | Kepler (2012−2018) | Generation 11.0 (2019−2021) |
| GPU code name | N13P-GS | Ice Lake GT2 |
| Market segment | Laptop | Desktop |
| Release date | 22 March 2012 (12 years ago) | no data |
Detailed specifications
General performance parameters such as number of shaders, GPU core base clock and boost clock speeds, manufacturing process, texturing and calculation speed. These parameters indirectly speak of performance, but for precise assessment you have to consider their benchmark and gaming test results. Note that power consumption of some graphics cards can well exceed their nominal TDP, especially when overclocked.
| Pipelines / CUDA cores | 384 | 384 |
| CUDA cores | 384 | no data |
| Core clock speed | Up to 625 MHz | 400 MHz |
| Boost clock speed | 645 MHz | 1000 MHz |
| Number of transistors | 1,270 million | no data |
| Manufacturing process technology | 28 nm | 10 nm |
| Power consumption (TDP) | 32 Watt | 15 Watt |
| Texture fill rate | 20.00 | 24.00 |
| Floating-point performance | 0.48 gflops | 0.768 gflops |
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 |
| Bus support | PCI Express 2.0, PCI Express 3.0 | no data |
| Interface | PCIe 3.0 x16 | PCIe 3.0 x1 |
| Width | no data | IGP |
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 | System Shared |
| Maximum RAM amount | 2 GB | System Shared |
| Memory bus width | 128bit | System Shared |
| Memory clock speed | 1800 - 4000 MHz | System Shared |
| Memory bandwidth | Up to 64.0 GB/s | no data |
| Shared memory | - | no data |
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 |
| HDMI | + | - |
| HDCP | + | - |
| Maximum VGA resolution | Up to 2048x1536 | no data |
Supported technologies
Supported technological solutions. This information will prove useful if you need some particular technology for your purposes.
| 3D Blu-Ray | + | - |
| Optimus | + | - |
API compatibility
List of supported graphics and general-purpose computing APIs, including their specific versions.
| DirectX | 12 API | 12 (12_1) |
| Shader Model | 5.1 | no data |
| OpenGL | 4.5 | 4.6 |
| OpenCL | 1.1 | no data |
| Vulkan | 1.1.126 | - |
| CUDA | + | - |
Pros & cons summary
| Chip lithography | 28 nm | 10 nm |
| Power consumption (TDP) | 32 Watt | 15 Watt |
Iris Plus Graphics 940 has a 180% more advanced lithography process, and 113.3% lower power consumption.
We couldn't decide between GeForce GT 640M and Iris Plus Graphics 940. We've got no test results to judge.
Be aware that GeForce GT 640M is a notebook card while Iris Plus Graphics 940 is a desktop one.
Should you still have questions concerning choice between the reviewed GPUs, ask them in Comments section, and we shall answer.
Comparisons with similar GPUs
We selected several comparisons of graphics cards with performance close to those reviewed, providing you with more options to consider.
