GeForce 840A vs GeForce GTX 850M
When choosing between GeForce 840A and GeForce GTX 850M, 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 840A and GeForce GTX 850M.
GeForce 840A
GeForce GTX 850M is a Laptop Graphics Card
Note: GeForce GTX 850M 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 GTX 850M here:
Main Specs
| GeForce 840A | GeForce GTX 850M | |
| Power consumption (TDP) | 33 Watt | 45 Watt |
| Interface | PCIe 3.0 x8 | PCIe 3.0 x16 |
| Memory type | DDR3 | DDR3, GDDR5 |
| Maximum RAM amount | 2 GB | 4 GB |
| Display Connectors | No outputs | No outputs |
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- GeForce GTX 850M has 36% more power consumption, than GeForce 840A.
- GeForce 840A is connected by PCIe 3.0 x8, and GeForce GTX 850M uses PCIe 3.0 x16 interface.
- GeForce GTX 850M has 2 GB more memory, than GeForce 840A.
- GeForce 840A is used in Desktops, and GeForce GTX 850M - in Laptops.
- GeForce 840A and GeForce GTX 850M are build with Maxwell architecture.
- GeForce 840A and GeForce GTX 850M are manufactured by 28 nm process technology.
Game benchmarks
| high / 1080p | 3−4 | 12−14 |
| ultra / 1080p | 2−3 | 8−9 |
| QHD / 1440p | 0−1 | 2−3 |
| low / 720p | 14−16 | 27−30 |
| medium / 1080p | 5−6 | 16−18 |
| The average gaming FPS of GeForce GTX 850M in Assassin's Creed Odyssey is 166% more, than GeForce 840A. | ||
| high / 1080p | − | 21−24 |
| ultra / 1080p | 7−8 | 18−20 |
| QHD / 1440p | 0−1 | 4−5 |
| 4K / 2160p | − | 4−5 |
| low / 720p | 18−20 | 45−50 |
| medium / 1080p | 8−9 | 21−24 |
| The average gaming FPS of GeForce GTX 850M in Battlefield 5 is 163% more, than GeForce 840A. | ||
| low / 768p | 45−50 | 45−50 |
| high / 1080p | 30−35 | − |
| QHD / 1440p | 0−1 | 0−1 |
| GeForce 840A and GeForce GTX 850M have the same average FPS in Call of Duty: Warzone. | ||
| low / 768p | 120−130 | 190−200 |
| medium / 768p | 90−95 | 160−170 |
| ultra / 1080p | 40−45 | 85−90 |
| QHD / 1440p | 24−27 | 50−55 |
| 4K / 2160p | 18−20 | 30−33 |
| high / 768p | 65−70 | 120−130 |
| The average gaming FPS of GeForce GTX 850M in Counter-Strike: Global Offensive is 75% more, than GeForce 840A. | ||
| low / 768p | 80−85 | 55−60 |
| ultra / 1080p | 14−16 | 35−40 |
| medium / 1080p | 40−45 | 45−50 |
| The average gaming FPS of GeForce GTX 850M in Cyberpunk 2077 is 2% more, than GeForce 840A. | ||
| low / 768p | 75−80 | 100−110 |
| medium / 768p | 50−55 | 85−90 |
| ultra / 1080p | 27−30 | 55−60 |
| The average gaming FPS of GeForce GTX 850M in Dota 2 is 59% more, than GeForce 840A. | ||
| high / 1080p | 5−6 | 14−16 |
| ultra / 1080p | − | 14−16 |
| 4K / 2160p | 2−3 | 5−6 |
| low / 720p | 14−16 | 35−40 |
| medium / 1080p | 6−7 | 16−18 |
| The average gaming FPS of GeForce GTX 850M in Far Cry 5 is 157% more, than GeForce 840A. | ||
| high / 1080p | 12−14 | 21−24 |
| ultra / 1080p | 7−8 | 16−18 |
| QHD / 1440p | − | 16−18 |
| low / 720p | 50−55 | 90−95 |
| medium / 1080p | 14−16 | 45−50 |
| The average gaming FPS of GeForce GTX 850M in Fortnite is 100% more, than GeForce 840A. | ||
| high / 1080p | 7−8 | 21−24 |
| ultra / 1080p | − | 18−20 |
| QHD / 1440p | 0−1 | 7−8 |
| low / 720p | 20−22 | 45−50 |
| medium / 1080p | 9−10 | 24−27 |
| The average gaming FPS of GeForce GTX 850M in Forza Horizon 4 is 158% more, than GeForce 840A. | ||
| low / 768p | 45−50 | 75−80 |
| medium / 768p | − | 70−75 |
| high / 1080p | 8−9 | 24−27 |
| ultra / 1080p | 5−6 | 10−12 |
| QHD / 1440p | 0−1 | 1−2 |
| medium / 720p | 40−45 | − |
| The average gaming FPS of GeForce GTX 850M in Grand Theft Auto V is 90% more, than GeForce 840A. | ||
| high / 1080p | 3−4 | 8−9 |
| ultra / 1080p | 1−2 | 6−7 |
| 4K / 2160p | 0−1 | 2−3 |
| low / 720p | 8−9 | 24−27 |
| medium / 1080p | 4−5 | 10−12 |
| The average gaming FPS of GeForce GTX 850M in Metro Exodus is 200% more, than GeForce 840A. | ||
| low / 768p | 85−90 | 100−110 |
| high / 1080p | 85−90 | − |
| ultra / 1080p | 80−85 | 100−110 |
| medium / 1080p | 85−90 | 100−110 |
| The average gaming FPS of GeForce GTX 850M in Minecraft is 23% more, than GeForce 840A. | ||
| high / 1080p | − | 21−24 |
| ultra / 1080p | 12−14 | 16−18 |
| low / 720p | 27−30 | 50−55 |
| medium / 1080p | 14−16 | 21−24 |
| The average gaming FPS of GeForce GTX 850M in PLAYERUNKNOWN'S BATTLEGROUNDS is 66% more, than GeForce 840A. | ||
| high / 1080p | − | 12−14 |
| ultra / 1080p | 7−8 | 9−10 |
| QHD / 1440p | 0−1 | 0−1 |
| low / 720p | 8−9 | 24−27 |
| medium / 1080p | − | 14−16 |
| The average gaming FPS of GeForce GTX 850M in Red Dead Redemption 2 is 112% more, than GeForce 840A. | ||
| low / 768p | 16−18 | 45−50 |
| medium / 768p | 12−14 | 30−33 |
| high / 1080p | 6−7 | 16−18 |
| ultra / 1080p | 5−6 | 10−11 |
| 4K / 2160p | − | 7−8 |
| The average gaming FPS of GeForce GTX 850M in The Witcher 3: Wild Hunt is 160% more, than GeForce 840A. | ||
| low / 768p | 70−75 | 95−100 |
| medium / 768p | 35−40 | 55−60 |
| ultra / 1080p | 16−18 | 30−35 |
| high / 768p | 30−35 | 50−55 |
| The average gaming FPS of GeForce GTX 850M in World of Tanks is 53% more, than GeForce 840A. | ||
Full Specs
| GeForce 840A | GeForce GTX 850M | |
| Architecture | Maxwell | Maxwell |
| Code name | GM108 | N15P-GT |
| Type | Desktop | Laptop |
| Release date | 17 March 2014 | 12 March 2014 |
| Pipelines | 384 | 640 |
| Core clock speed | 1029 MHz | |
| Boost Clock | 1124 MHz | |
| Transistor count | 1,870 million | |
| Manufacturing process technology | 28 nm | 28 nm |
| Texture fill rate | 17.98 | 36.08 |
| Floating-point performance | 863.2 gflops | 1,155 gflops |
| Memory bus width | 64 Bit | 128 Bit |
| Memory clock speed | 2002 MHz | |
| Memory bandwidth | 16.02 GB/s | 80.0 GB/s |
| Shared memory | - | |
| DirectX | 12 (11_0) | 12 (11_0) |
| Shader Model | 5.1 | 5.1 |
| OpenGL | 4.6 | 4.5 |
| OpenCL | 1.2 | 1.1 |
| Vulkan | 1.1.126 | 1.1.126 |
| CUDA | 5.0 | + |
| CUDA cores | 640 | |
| Bus support | PCI Express 2.0, PCI Express 3.0 | |
| SLI options | + | |
| HDMI | + | |
| Bitcoin / BTC (SHA256) | 153 Mh/s | |
| Laptop size | medium sized | |
| Standard memory configuration | DDR3 or GDDR5 | |
| eDP 1.2 signal support | Up to 3840x2160 | |
| LVDS signal support | Up to 1920x1200 | |
| DisplayPort Multimode (DP++) support | Up to 3840x2160 | |
| HDCP content protection | + | |
| 7.1 channel HD audio on HDMI | + | |
| TrueHD and DTS-HD audio bitstreaming | + | |
| H.264, VC1, MPEG2 1080p video decoder | + | |
| Optimus | + | |
| Ethereum / ETH (DaggerHashimoto) | 1.8 Mh/s | |
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