GeForce 940MX vs GTX 660 OEM
Aggregate performance score
940MX outperforms GTX 660 OEM by a small 6% based on our aggregated benchmark results.
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in performance ranking | 673 | 661 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 0.10 | 0.23 |
| Architecture | Kepler (2012−2018) | Maxwell (2014−2018) |
| GPU code name | GK104 | N16S-GTR-B/S |
| Market segment | Desktop | Laptop |
| Release date | 22 August 2012 (11 years ago) | 10 March 2016 (8 years ago) |
| Current price | $481 | $950 |
Cost-effectiveness evaluation
Performance to price ratio. The higher, the better.
GeForce 940MX has 130% better value for money than GTX 660 OEM.
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 | 1152 | 384 |
| Core clock speed | 823 MHz | 1122 MHz |
| Boost clock speed | 888 MHz | 1242 MHz |
| Number of transistors | 3,540 million | 1,870 million |
| Manufacturing process technology | 28 nm | 28 nm |
| Power consumption (TDP) | 130 Watt | 23 Watt |
| Texture fill rate | 85.25 | 23.83 |
| Floating-point performance | 2,046 gflops | 762.6 gflops |
Form factor & compatibility
Information on GeForce GTX 660 OEM and GeForce 940MX compatibility with other computer components. Useful when choosing a future computer configuration or upgrading an existing one. For desktop video cards it's interface and bus (motherboard compatibility), additional power connectors (power supply compatibility). For notebook video cards it's notebook size, connection slot and bus, if the video card is inserted into a slot instead of being soldered to the notebook motherboard.
| Laptop size | no data | medium sized |
| Bus support | no data | PCI Express 3.0 |
| Interface | PCIe 3.0 x16 | PCIe 3.0 x8 |
| Length | 241 mm | no data |
| Width | 2-slot | no data |
| Supplementary power connectors | 1x 6-pin | None |
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 | GDDR5 | DDR3, GDDR5 |
| Maximum RAM amount | 2 GB | 4 GB |
| Memory bus width | 256 Bit | 64 Bit |
| Memory clock speed | 5600 MHz | 4000 MHz |
| Memory bandwidth | 179.2 GB/s | 40.1 GB/s |
| 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 | 2x DVI, 1x HDMI, 1x DisplayPort | No outputs |
| HDMI | + | no data |
Supported technologies
Supported technological solutions. This information will prove useful if you need some particular technology for your purposes.
| GPU Boost | no data | 2.0 |
| Optimus | no data | + |
| GameWorks | no data | + |
API compatibility
List of supported graphics 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 | 4.5 |
| OpenCL | 1.2 | 1.2 |
| Vulkan | 1.1.126 | 1.1 |
| 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.
Average FPS across all PC games
Here are the average frames per second in a large set of popular games across different resolutions:
| Full HD | 16−18
−12.5%
| 18
+12.5%
|
| 4K | 9−10
−11.1%
| 10
+11.1%
|
Pros & cons summary
| Performance score | 3.69 | 3.91 |
| Recency | 22 August 2012 | 10 March 2016 |
| Maximum RAM amount | 2 GB | 4 GB |
| Power consumption (TDP) | 130 Watt | 23 Watt |
Given the minimal performance differences, no clear winner can be declared between GeForce GTX 660 OEM and GeForce 940MX.
Be aware that GeForce GTX 660 OEM is a desktop card while GeForce 940MX is a notebook 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.
