GeForce GT 640M LE vs GeForce GTX 850A
When choosing between GeForce GT 640M LE and GeForce GTX 850A, it is worth examining the specifications of the models in detail. Do they meet the recommended requirements of modern games and software? Storage capacity, form factor, TDP, available ports, warranty and manufacturer support are all important. For example, the size of a PC case can limit the maximum thickness and length of the card. Often, instead of the factory overclocked card and RGB backlight, it is better to choose a reference model with a more efficient GPU. And make sure that your current power supply unit has the correct connection pins (using adapters is not recommended). This GPUs compare tool is meant to help you to choose the best graphics card for your build. Let's find out the difference between GeForce GT 640M LE and GeForce GTX 850A.
GeForce GTX 850A
GeForce GT 640M LE is a Laptop Graphics Card
Note: GeForce GT 640M LE is only used in laptop graphics. It has lower GPU clock speed compared to the desktop variant, which results in lower power consumption, but also 10-30% lower gaming performance. Check available laptop models with GeForce GT 640M LE here:
Main Specs
| GeForce GT 640M LE | GeForce GTX 850A | |
| Power consumption (TDP) | 20 Watt | 45 Watt |
| Interface | PCIe 2.0 x16 | PCIe 3.0 x16 |
| Memory type | DDR3\DDR5 | DDR3 |
| Maximum RAM amount | 2 GB | 2 GB |
| Display Connectors | No outputs | No outputs |
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- GeForce GTX 850A has 125% more power consumption, than GeForce GT 640M LE.
- GeForce GT 640M LE is connected by PCIe 2.0 x16, and GeForce GTX 850A uses PCIe 3.0 x16 interface.
- GeForce GT 640M LE and GeForce GTX 850A have maximum RAM of 2 GB.
- GeForce GT 640M LE is used in Laptops, and GeForce GTX 850A - in Desktops.
- GeForce GT 640M LE is build with Fermi / Kepler architecture, and GeForce GTX 850A - with Maxwell.
- GeForce GT 640M LE and GeForce GTX 850A are manufactured by 28 nm process technology.
- Memory clock speed of GeForce GT 640M LE and GeForce GTX 850A is 1800 MHz.
Game benchmarks
| high / 1080p | 0−1 | 1−2 |
| ultra / 1080p | − | 0−1 |
| QHD / 1440p | 0−1 | 0−1 |
| low / 720p | 1−2 | 12−14 |
| medium / 1080p | 0−1 | 3−4 |
| The average gaming FPS of GeForce GTX 850A in Assassin's Creed Odyssey is 1200% more, than GeForce GT 640M LE. | ||
| ultra / 1080p | − | 4−5 |
| QHD / 1440p | 0−1 | 0−1 |
| low / 720p | 0−1 | 16−18 |
| medium / 1080p | − | 5−6 |
| low / 768p | 50−55 | 45−50 |
| high / 1080p | 45−50 | 40−45 |
| QHD / 1440p | 0−1 | 0−1 |
| The average gaming FPS of GeForce GT 640M LE in Call of Duty: Warzone is 11% more, than GeForce GTX 850A. | ||
| low / 768p | 60−65 | 120−130 |
| medium / 768p | 27−30 | 90−95 |
| ultra / 1080p | 7−8 | 40−45 |
| QHD / 1440p | − | 24−27 |
| 4K / 2160p | − | 18−20 |
| high / 768p | 16−18 | 65−70 |
| The average gaming FPS of GeForce GTX 850A in Counter-Strike: Global Offensive is 189% more, than GeForce GT 640M LE. | ||
| low / 768p | 70−75 | 85−90 |
| ultra / 1080p | 0−1 | 16−18 |
| medium / 1080p | 45−50 | 40−45 |
| The average gaming FPS of GeForce GTX 850A in Cyberpunk 2077 is 8% more, than GeForce GT 640M LE. | ||
| low / 768p | 45−50 | 75−80 |
| medium / 768p | 10−11 | 50−55 |
| ultra / 1080p | 0−1 | 24−27 |
| The average gaming FPS of GeForce GTX 850A in Dota 2 is 124% more, than GeForce GT 640M LE. | ||
| high / 1080p | − | 2−3 |
| ultra / 1080p | − | 2−3 |
| 4K / 2160p | − | 0−1 |
| low / 720p | 0−1 | 12−14 |
| medium / 1080p | − | 3−4 |
| high / 1080p | − | 10−11 |
| ultra / 1080p | − | 5−6 |
| QHD / 1440p | − | 2−3 |
| low / 720p | 21−24 | 50−55 |
| medium / 1080p | 0−1 | 10−12 |
| The average gaming FPS of GeForce GTX 850A in Fortnite is 136% more, than GeForce GT 640M LE. | ||
| high / 1080p | 0−1 | 4−5 |
| QHD / 1440p | 0−1 | 0−1 |
| low / 720p | 0−1 | 16−18 |
| medium / 1080p | 0−1 | 7−8 |
| low / 768p | 18−20 | 45−50 |
| high / 1080p | 0−1 | 5−6 |
| ultra / 1080p | − | 2−3 |
| QHD / 1440p | 0−1 | 0−1 |
| medium / 720p | 12−14 | 35−40 |
| The average gaming FPS of GeForce GTX 850A in Grand Theft Auto V is 162% more, than GeForce GT 640M LE. | ||
| high / 1080p | − | 1−2 |
| ultra / 1080p | − | 0−1 |
| 4K / 2160p | − | 0−1 |
| low / 720p | 0−1 | 5−6 |
| medium / 1080p | − | 3−4 |
| low / 768p | 75−80 | 90−95 |
| high / 1080p | 27−30 | 85−90 |
| ultra / 1080p | − | 70−75 |
| medium / 1080p | − | 90−95 |
| The average gaming FPS of GeForce GTX 850A in Minecraft is 69% more, than GeForce GT 640M LE. | ||
| ultra / 1080p | − | 12−14 |
| low / 720p | 8−9 | 27−30 |
| medium / 1080p | − | 14−16 |
| The average gaming FPS of GeForce GTX 850A in PLAYERUNKNOWN'S BATTLEGROUNDS is 250% more, than GeForce GT 640M LE. | ||
| ultra / 1080p | − | 4−5 |
| QHD / 1440p | − | 0−1 |
| low / 720p | 0−1 | 6−7 |
| low / 768p | 0−1 | 12−14 |
| medium / 768p | − | 9−10 |
| high / 1080p | − | 4−5 |
| ultra / 1080p | − | 3−4 |
| 4K / 2160p | − | 0−1 |
| low / 768p | 45−50 | 75−80 |
| medium / 768p | 14−16 | 35−40 |
| ultra / 1080p | 0−1 | 16−18 |
| high / 768p | 12−14 | 30−35 |
| The average gaming FPS of GeForce GTX 850A in World of Tanks is 96% more, than GeForce GT 640M LE. | ||
Full Specs
| GeForce GT 640M LE | GeForce GTX 850A | |
| Architecture | Fermi / Kepler | Maxwell |
| Code name | N13P-LP | GM107 |
| Type | Laptop | Desktop |
| Release date | 22 March 2012 | 17 March 2014 |
| Pipelines | 384 | 640 |
| Core clock speed | 902 MHz | |
| Boost Clock | 936 MHz | |
| Transistor count | 585 million | 1,870 million |
| Manufacturing process technology | 28 nm | 28 nm |
| Texture fill rate | 37.44 | |
| Floating-point performance | 384.0 gflops | 1,198 gflops |
| Memory bus width | 128bit | 128 Bit |
| Memory clock speed | 1800 - 4000 MHz | 1800 MHz |
| Memory bandwidth | 28.8 GB/s | |
| Shared memory | - | |
| DirectX | 12 API | 12 (11_0) |
| Shader Model | 5.1 | 5.1 |
| OpenGL | 4.5 | 4.6 |
| OpenCL | 1.1 | 1.2 |
| Vulkan | N/A | 1.1.126 |
| CUDA | + | 5.0 |
| CUDA cores | Up to 384 | |
| Bus support | PCI Express 2.0, PCI Express 3.0 | |
| HDMI | + | |
| HDCP | + | |
| Maximum VGA resolution | Up to 2048x1536 | |
| 3D Blu-Ray | + | |
| Bitcoin / BTC (SHA256) | 14 Mh/s | |
| Laptop size | medium sized | |
| Optimus | + | |
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