GeForce 840A vs GeForce GTX 870M
If you are going to buy a new graphics card and are choosing between GeForce 840A and GeForce GTX 870M, there are a couple of things to consider. Cards with more VRAM in general perform better and allow you to play on higher graphics settings. Size also makes a difference. A model with a large heatsink can occupy up to three expansion slots on a motherboard. Be sure you have enough room in your PC case. When comparing GPUs with different architectures, more processing cores and even higher TFLOPS will not always translate to better performance. To help you decide which GPU you need, we have measured frame rates in a number of popular games. For more on how the GeForce 840A stacks up against GeForce GTX 870M, check out specs charts below.
GeForce 840A
GeForce GTX 870M is a Laptop Graphics Card
Note: GeForce GTX 870M 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 870M here:
Main Specs
| GeForce 840A | GeForce GTX 870M | |
| Power consumption (TDP) | 33 Watt | 100 Watt |
| Interface | PCIe 3.0 x8 | MXM-B (3.0) |
| Supplementary power connectors | None | |
| Memory type | DDR3 | GDDR5 |
| Maximum RAM amount | 2 GB | 6 GB |
| Display Connectors | No outputs | No outputs |
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- GeForce GTX 870M has 203% more power consumption, than GeForce 840A.
- GeForce 840A is connected by PCIe 3.0 x8, and GeForce GTX 870M uses MXM-B (3.0) interface.
- GeForce GTX 870M has 4 GB more memory, than GeForce 840A.
- GeForce 840A is used in Desktops, and GeForce GTX 870M - in Laptops.
- GeForce 840A is build with Maxwell architecture, and GeForce GTX 870M - with Kepler.
- Core clock speed of GeForce 840A is 88 MHz higher, than GeForce GTX 870M.
- GeForce 840A and GeForce GTX 870M are manufactured by 28 nm process technology.
Game benchmarks
| high / 1080p | 3−4 | 16−18 |
| ultra / 1080p | 2−3 | 10−11 |
| QHD / 1440p | 0−1 | 4−5 |
| low / 720p | 14−16 | 35−40 |
| medium / 1080p | 5−6 | 21−24 |
| The average gaming FPS of GeForce GTX 870M in Assassin's Creed Odyssey is 250% more, than GeForce 840A. | ||
| high / 1080p | − | 27−30 |
| ultra / 1080p | 7−8 | 24−27 |
| QHD / 1440p | 0−1 | 7−8 |
| 4K / 2160p | − | 6−7 |
| low / 720p | 18−20 | 60−65 |
| medium / 1080p | 8−9 | 30−35 |
| The average gaming FPS of GeForce GTX 870M in Battlefield 5 is 263% more, than GeForce 840A. | ||
| low / 768p | 45−50 | 50−55 |
| high / 1080p | 30−35 | 50−55 |
| QHD / 1440p | 0−1 | 0−1 |
| The average gaming FPS of GeForce GTX 870M in Call of Duty: Warzone is 30% more, than GeForce 840A. | ||
| low / 768p | 120−130 | 220−230 |
| medium / 768p | 90−95 | 190−200 |
| ultra / 1080p | 40−45 | 100−110 |
| QHD / 1440p | 24−27 | 65−70 |
| 4K / 2160p | 18−20 | 35−40 |
| high / 768p | 65−70 | 150−160 |
| The average gaming FPS of GeForce GTX 870M in Counter-Strike: Global Offensive is 109% more, than GeForce 840A. | ||
| low / 768p | 80−85 | 60−65 |
| ultra / 1080p | 14−16 | 45−50 |
| medium / 1080p | 40−45 | 55−60 |
| The average gaming FPS of GeForce GTX 870M in Cyberpunk 2077 is 19% more, than GeForce 840A. | ||
| low / 768p | 75−80 | 110−120 |
| medium / 768p | 50−55 | 100−110 |
| ultra / 1080p | 27−30 | 70−75 |
| The average gaming FPS of GeForce GTX 870M in Dota 2 is 86% more, than GeForce 840A. | ||
| high / 1080p | 5−6 | 21−24 |
| ultra / 1080p | − | 18−20 |
| QHD / 1440p | − | 18−20 |
| 4K / 2160p | 2−3 | 6−7 |
| low / 720p | 14−16 | 45−50 |
| medium / 1080p | 6−7 | 21−24 |
| The average gaming FPS of GeForce GTX 870M in Far Cry 5 is 242% more, than GeForce 840A. | ||
| high / 1080p | 12−14 | 27−30 |
| ultra / 1080p | 7−8 | 21−24 |
| QHD / 1440p | − | 14−16 |
| low / 720p | 50−55 | 110−120 |
| medium / 1080p | 14−16 | 60−65 |
| The average gaming FPS of GeForce GTX 870M in Fortnite is 159% more, than GeForce 840A. | ||
| high / 1080p | 7−8 | 30−33 |
| ultra / 1080p | − | 21−24 |
| QHD / 1440p | 0−1 | 10−12 |
| low / 720p | 20−22 | 60−65 |
| medium / 1080p | 9−10 | 30−35 |
| The average gaming FPS of GeForce GTX 870M in Forza Horizon 4 is 250% more, than GeForce 840A. | ||
| low / 768p | 45−50 | 95−100 |
| medium / 768p | − | 85−90 |
| high / 1080p | 8−9 | 35−40 |
| ultra / 1080p | 5−6 | 14−16 |
| QHD / 1440p | 0−1 | 4−5 |
| medium / 720p | 40−45 | − |
| The average gaming FPS of GeForce GTX 870M in Grand Theft Auto V is 150% more, than GeForce 840A. | ||
| high / 1080p | 3−4 | 10−12 |
| ultra / 1080p | 1−2 | 8−9 |
| 4K / 2160p | 0−1 | 2−3 |
| low / 720p | 8−9 | 35−40 |
| medium / 1080p | 4−5 | 14−16 |
| The average gaming FPS of GeForce GTX 870M in Metro Exodus is 350% more, than GeForce 840A. | ||
| low / 768p | 85−90 | 110−120 |
| high / 1080p | 85−90 | − |
| ultra / 1080p | 80−85 | − |
| medium / 1080p | 85−90 | 110−120 |
| The average gaming FPS of GeForce GTX 870M in Minecraft is 32% more, than GeForce 840A. | ||
| ultra / 1080p | 12−14 | 14−16 |
| low / 720p | 27−30 | 65−70 |
| medium / 1080p | 14−16 | 18−20 |
| The average gaming FPS of GeForce GTX 870M in PLAYERUNKNOWN'S BATTLEGROUNDS is 83% more, than GeForce 840A. | ||
| high / 1080p | − | 14−16 |
| ultra / 1080p | 7−8 | 9−10 |
| QHD / 1440p | 0−1 | 0−1 |
| low / 720p | 8−9 | 30−35 |
| medium / 1080p | − | 18−20 |
| The average gaming FPS of GeForce GTX 870M in Red Dead Redemption 2 is 162% more, than GeForce 840A. | ||
| low / 768p | 16−18 | 65−70 |
| medium / 768p | 12−14 | 40−45 |
| high / 1080p | 6−7 | 21−24 |
| ultra / 1080p | 5−6 | 12−14 |
| 4K / 2160p | − | 7−8 |
| The average gaming FPS of GeForce GTX 870M in The Witcher 3: Wild Hunt is 260% more, than GeForce 840A. | ||
| low / 768p | 70−75 | 90−95 |
| medium / 768p | 35−40 | 60−65 |
| ultra / 1080p | 16−18 | 35−40 |
| high / 768p | 30−35 | 55−60 |
| The average gaming FPS of GeForce GTX 870M in World of Tanks is 58% more, than GeForce 840A. | ||
Full Specs
| GeForce 840A | GeForce GTX 870M | |
| Architecture | Maxwell | Kepler |
| Code name | GM108 | N15P-GT |
| Type | Desktop | Laptop |
| Release date | 17 March 2014 | 12 March 2014 |
| Pipelines | 384 | 1344 |
| Core clock speed | 1029 MHz | 941 MHz |
| Boost Clock | 1124 MHz | 967 MHz |
| Transistor count | 3,540 million | |
| Manufacturing process technology | 28 nm | 28 nm |
| Texture fill rate | 17.98 | 108.3 |
| Floating-point performance | 863.2 gflops | 2,599 gflops |
| Memory bus width | 64 Bit | 192 Bit |
| Memory clock speed | 2002 MHz | |
| Memory bandwidth | 16.02 GB/s | 120.0 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 | 1344 | |
| Bus support | PCI Express 2.0, PCI Express 3.0 | |
| SLI options | + | |
| HDMI | + | |
| Bitcoin / BTC (SHA256) | 82 Mh/s | |
| Laptop size | large | |
| Standard memory configuration | 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 | + | |
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