GeForce 940MX vs GTX 660
Aggregated performance score
GTX 660 outperforms 940MX by 164% based on our aggregated benchmark results.
General info
GPU architecture, market segment, value for money and other general parameters compared.
| Place in performance ranking | 403 | 657 |
| Place by popularity | 60 | 76 |
| Value for money | 2.34 | 0.22 |
| Architecture | Kepler (2012−2018) | Maxwell (2014−2018) |
| GPU code name | GK106 | N16S-GTR-B/S |
| Market segment | Desktop | Laptop |
| Release date | 6 September 2012 (11 years old) | 10 March 2016 (8 years old) |
| Launch price (MSRP) | $229 | no data |
| Current price | $172 (0.8x MSRP) | $950 |
Value for money
Performance to price ratio. The higher, the better.
GTX 660 has 964% better value for money than GeForce 940MX.
Technical specs
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 | 960 | 384 |
| CUDA cores | 960 | no data |
| Core clock speed | 980 MHz | 1122 MHz |
| Boost clock speed | 1033 MHz | 1242 MHz |
| Number of transistors | 2,540 million | 1,870 million |
| Manufacturing process technology | 28 nm | 28 nm |
| Power consumption (TDP) | 140 Watt | 23 Watt |
| Texture fill rate | 78.4 billion/sec | 23.83 |
| Floating-point performance | 1,981 gflops | 762.6 gflops |
Size and compatibility
Information on GeForce GTX 660 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 | PCI Express 3.0 | PCI Express 3.0 |
| Interface | PCIe 3.0 x16 | PCIe 3.0 x8 |
| Length | 9.5" (24.1 cm) | no data |
| Height | 4.376" (11.1 cm) | no data |
| Width | 2-slot | no data |
| Supplementary power connectors | One 6-pin | None |
| SLI options | + | no data |
Memory
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 | 192-bit GDDR5 | 64 Bit |
| Memory clock speed | 6.0 GB/s | 4000 MHz |
| Memory bandwidth | 144.2 GB/s | 40.1 GB/s |
| Shared memory | no data | - |
Video outputs and ports
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 | One Dual Link DVI-I, One Dual Link DVI-D, One HDMI, One DisplayPort | No outputs |
| Multi monitor support | 4 displays | no data |
| HDMI | + | no data |
| HDCP | + | no data |
| Maximum VGA resolution | 2048x1536 | no data |
| Audio input for HDMI | Internal | no data |
Technologies
Supported technological solutions. This information will prove useful if you need some particular technology for your purposes.
| 3D Blu-Ray | + | no data |
| 3D Gaming | + | no data |
| 3D Vision | + | no data |
| GPU Boost | no data | 2.0 |
| Optimus | no data | + |
| GameWorks | no data | + |
API support
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 | 4.3 | 4.5 |
| OpenCL | 1.2 | 1.2 |
| Vulkan | 1.1.126 | 1.1 |
| CUDA | + | + |
Synthetic benchmark performance
Non-gaming benchmark performance comparison. The combined score is measured on a 0-100 point scale.
Combined synthetic benchmark score
This is our combined benchmark performance score. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.
GTX 660 outperforms 940MX by 164% based on our aggregated benchmark results.
Passmark
This is the most ubiquitous GPU benchmark, part of Passmark PerformanceTest suite. It gives the graphics card a thorough evaluation under various types of load, providing four separate benchmarks for Direct3D versions 9, 10, 11 and 12 (the last being done in 4K resolution if possible), and few more tests engaging DirectCompute capabilities.
Benchmark coverage: 25%
GTX 660 outperforms 940MX by 164% in Passmark.
3DMark Fire Strike Graphics
Fire Strike is a DirectX 11 benchmark for gaming PCs. It features two separate tests displaying a fight between a humanoid and a fiery creature made of lava. Using 1920x1080 resolution, Fire Strike shows off some realistic graphics and is quite taxing on hardware.
Benchmark coverage: 14%
GTX 660 outperforms 940MX by 153% in 3DMark Fire Strike Graphics.
GeekBench 5 OpenCL
Geekbench 5 is a widespread graphics card benchmark combined from 11 different test scenarios. All these scenarios rely on direct usage of GPU's processing power, no 3D rendering is involved. This variation uses OpenCL API by Khronos Group.
Benchmark coverage: 9%
GTX 660 outperforms 940MX by 82% in GeekBench 5 OpenCL.
GeekBench 5 Vulkan
Geekbench 5 is a widespread graphics card benchmark combined from 11 different test scenarios. All these scenarios rely on direct usage of GPU's processing power, no 3D rendering is involved. This variation uses Vulkan API by AMD & Khronos Group.
Benchmark coverage: 5%
GTX 660 outperforms 940MX by 125% in GeekBench 5 Vulkan.
GeekBench 5 CUDA
Geekbench 5 is a widespread graphics card benchmark combined from 11 different test scenarios. All these scenarios rely on direct usage of GPU's processing power, no 3D rendering is involved. This variation uses CUDA API by NVIDIA.
Benchmark coverage: 4%
GTX 660 outperforms 940MX by 36% in GeekBench 5 CUDA.
Octane Render OctaneBench
This is a special benchmark measuring graphics card performance in OctaneRender, which is a realistic GPU rendering engine by OTOY Inc., available either as a standalone program, or as a plugin for 3DS Max, Cinema 4D and many other apps. It renders four different static scenes, then compares render times with a reference GPU which is currently GeForce GTX 980. This benchmark has nothing to do with gaming and is aimed at professional 3D graphics artists.
Benchmark coverage: 4%
GTX 660 outperforms 940MX by 94% in Octane Render OctaneBench.
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 | 47
+161%
| 18
−161%
|
| 4K | 24−27
+140%
| 10
−140%
|
Advantages and disadvantages
| Performance score | 10.32 | 3.91 |
| Recency | 6 September 2012 | 10 March 2016 |
| Maximum RAM amount | 2 GB | 4 GB |
| Power consumption (TDP) | 140 Watt | 23 Watt |
The GeForce GTX 660 is our recommended choice as it beats the GeForce 940MX in performance tests.
Be aware that GeForce GTX 660 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.
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