GeForce 920A vs GeForce GT 640M
In this comparison between GeForce 920A and GeForce GT 640M you will find out which graphics card performs better in today's games. Bear in mind that third-party versions may have more efficient cooling and higher clock speeds. This will increase cards' performance, though not by much. In addition to raw power you should also take into account the dimensions. Thicker models simply will not fit into a small mini-ITX case. The resolution of your monitor also affects the choice, since 4K gameplay requires a more powerful GPU. And don't overspend on the graphics card. Other parts of your build may also need to be upgraded, save some money for the CPU or power supply. For some people GeForce 920A will be the best choice, for others GeForce GT 640M will be their preference. Study the comparison tables below and make your choice.
GeForce 920A
GeForce GT 640M is a Laptop Graphics Card
Note: GeForce GT 640M 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 here:
Main Specs
| GeForce 920A | GeForce GT 640M | |
| Power consumption (TDP) | 33 Watt | 32 Watt |
| Interface | PCIe 3.0 x8 | PCIe 3.0 x16 |
| Memory type | DDR3 | DDR3\GDDR5 |
| Maximum RAM amount | 2 GB | 2 GB |
| Display Connectors | No outputs | No outputs |
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- GeForce 920A has 3% more power consumption, than GeForce GT 640M.
- GeForce 920A is connected by PCIe 3.0 x8, and GeForce GT 640M uses PCIe 3.0 x16 interface.
- GeForce 920A and GeForce GT 640M have maximum RAM of 2 GB.
- GeForce 920A is used in Desktops, and GeForce GT 640M - in Laptops.
- GeForce 920A is build with Kepler 2.0 architecture, and GeForce GT 640M - with Kepler.
- GeForce 920A and GeForce GT 640M are manufactured by 28 nm process technology.
- Memory clock speed of GeForce 920A is 202 MHz higher, than GeForce GT 640M.
Game benchmarks
| high / 1080p | 0−1 | 0−1 |
| ultra / 1080p | − | 0−1 |
| QHD / 1440p | 0−1 | 0−1 |
| low / 720p | 1−2 | 10−12 |
| medium / 1080p | 0−1 | 2−3 |
| The average gaming FPS of GeForce GT 640M in Assassin's Creed Odyssey is 1000% more, than GeForce 920A. | ||
| ultra / 1080p | − | 3−4 |
| QHD / 1440p | 0−1 | 0−1 |
| low / 720p | 0−1 | 12−14 |
| medium / 1080p | − | 4−5 |
| low / 768p | 50−55 | 50−55 |
| high / 1080p | 45−50 | 45−50 |
| QHD / 1440p | 0−1 | 0−1 |
| GeForce 920A and GeForce GT 640M have the same average FPS in Call of Duty: Warzone. | ||
| low / 768p | 60−65 | 110−120 |
| medium / 768p | 27−30 | 85−90 |
| ultra / 1080p | 7−8 | 35−40 |
| 4K / 2160p | − | 10−11 |
| high / 768p | 16−18 | 55−60 |
| The average gaming FPS of GeForce GT 640M in Counter-Strike: Global Offensive is 164% more, than GeForce 920A. | ||
| low / 768p | 70−75 | 70−75 |
| ultra / 1080p | 0−1 | 12−14 |
| medium / 1080p | 45−50 | 45−50 |
| GeForce 920A and GeForce GT 640M have the same average FPS in Cyberpunk 2077. | ||
| low / 768p | 45−50 | 70−75 |
| medium / 768p | 10−11 | 40−45 |
| ultra / 1080p | 0−1 | 18−20 |
| The average gaming FPS of GeForce GT 640M in Dota 2 is 96% more, than GeForce 920A. | ||
| high / 1080p | − | 2−3 |
| ultra / 1080p | − | 2−3 |
| 4K / 2160p | − | 0−1 |
| low / 720p | 0−1 | 9−10 |
| medium / 1080p | − | 3−4 |
| ultra / 1080p | − | 5−6 |
| QHD / 1440p | − | 1−2 |
| low / 720p | 21−24 | 45−50 |
| medium / 1080p | 0−1 | 7−8 |
| The average gaming FPS of GeForce GT 640M in Fortnite is 113% more, than GeForce 920A. | ||
| high / 1080p | 0−1 | 2−3 |
| QHD / 1440p | 0−1 | 0−1 |
| low / 720p | 0−1 | 14−16 |
| medium / 1080p | 0−1 | 5−6 |
| low / 768p | 18−20 | 40−45 |
| high / 1080p | 0−1 | 3−4 |
| ultra / 1080p | − | 2−3 |
| QHD / 1440p | 0−1 | 0−1 |
| medium / 720p | 12−14 | 30−35 |
| The average gaming FPS of GeForce GT 640M in Grand Theft Auto V is 131% more, than GeForce 920A. | ||
| high / 1080p | − | 1−2 |
| ultra / 1080p | − | 0−1 |
| 4K / 2160p | − | 0−1 |
| low / 720p | 0−1 | 2−3 |
| medium / 1080p | − | 2−3 |
| low / 768p | 75−80 | 85−90 |
| high / 1080p | 27−30 | 55−60 |
| The average gaming FPS of GeForce GT 640M in Minecraft is 35% more, than GeForce 920A. | ||
| high / 1080p | − | 14−16 |
| ultra / 1080p | − | 12−14 |
| low / 720p | 8−9 | 24−27 |
| medium / 1080p | − | 14−16 |
| The average gaming FPS of GeForce GT 640M in PLAYERUNKNOWN'S BATTLEGROUNDS is 212% more, than GeForce 920A. | ||
| ultra / 1080p | − | 3−4 |
| QHD / 1440p | − | 0−1 |
| low / 720p | 0−1 | 3−4 |
| low / 768p | 0−1 | 7−8 |
| medium / 768p | − | 6−7 |
| high / 1080p | − | 3−4 |
| 4K / 2160p | − | 0−1 |
| low / 768p | 45−50 | 70−75 |
| medium / 768p | 14−16 | 35−40 |
| ultra / 1080p | 0−1 | 12−14 |
| high / 768p | 12−14 | 27−30 |
| The average gaming FPS of GeForce GT 640M in World of Tanks is 84% more, than GeForce 920A. | ||
Full Specs
| GeForce 920A | GeForce GT 640M | |
| Architecture | Kepler 2.0 | Kepler |
| Code name | GK208B | N13P-GS |
| Type | Desktop | Laptop |
| Release date | 13 March 2015 | 22 March 2012 |
| Pipelines | 384 | 384 |
| Core clock speed | 954 MHz | |
| Boost Clock | 645 MHz | |
| Transistor count | 915 million | 1,270 million |
| Manufacturing process technology | 28 nm | 28 nm |
| Texture fill rate | 30.53 | |
| Floating-point performance | 441.6 gflops | 480.0 gflops |
| Memory bus width | 64 Bit | 128bit |
| Memory clock speed | 2002 MHz | 1800 - 4000 MHz |
| Memory bandwidth | 16.02 GB/s | |
| Shared memory | - | |
| DirectX | 12 (11_0) | 12 API |
| Shader Model | 5.1 | 5.1 |
| OpenGL | 4.6 | 4.5 |
| OpenCL | 1.2 | 1.1 |
| Vulkan | 1.1.126 | 1.1.126 |
| CUDA | 3.5 | + |
| CUDA cores | 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) | 18 Mh/s | |
| Laptop size | medium sized | |
| Optimus | + | |
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