GeForce 840A vs GeForce GTX 670MX SLI
If you are going to buy a new graphics card and are choosing between GeForce 840A and GeForce GTX 670MX SLI, 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 670MX SLI, check out specs charts below.
GeForce 840A
GeForce GTX 670MX SLI is a Laptop Graphics Card
Note: GeForce GTX 670MX SLI 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 670MX SLI here:
Main Specs
| GeForce 840A | GeForce GTX 670MX SLI | |
| Power consumption (TDP) | 33 Watt | 150 Watt |
| Interface | PCIe 3.0 x8 | |
| Memory type | DDR3 | GDDR5 |
| Maximum RAM amount | 2 GB | |
| Display Connectors | No outputs | |
| Check Price |
- GeForce GTX 670MX SLI has 354% more power consumption, than GeForce 840A.
- GeForce 840A is used in Desktops, and GeForce GTX 670MX SLI - in Laptops.
- GeForce 840A is build with Maxwell architecture, and GeForce GTX 670MX SLI - with Kepler.
- Core clock speed of GeForce 840A is 429 MHz higher, than GeForce GTX 670MX SLI.
- GeForce 840A and GeForce GTX 670MX SLI are manufactured by 28 nm process technology.
- Memory clock speed of GeForce GTX 670MX SLI is 798 MHz higher, than GeForce 840A.
Game benchmarks
| high / 1080p | 3−4 | 21−24 |
| ultra / 1080p | 2−3 | 14−16 |
| QHD / 1440p | 0−1 | 8−9 |
| 4K / 2160p | − | 5−6 |
| low / 720p | 14−16 | 40−45 |
| medium / 1080p | 5−6 | 27−30 |
| The average gaming FPS of GeForce GTX 670MX SLI in Assassin's Creed Odyssey is 350% more, than GeForce 840A. | ||
| high / 1080p | − | 35−40 |
| ultra / 1080p | 7−8 | 30−35 |
| QHD / 1440p | 0−1 | 14−16 |
| 4K / 2160p | − | 9−10 |
| low / 720p | 18−20 | 75−80 |
| medium / 1080p | 8−9 | 40−45 |
| The average gaming FPS of GeForce GTX 670MX SLI in Battlefield 5 is 354% more, than GeForce 840A. | ||
| low / 768p | 45−50 | 50−55 |
| high / 1080p | 30−35 | − |
| QHD / 1440p | 0−1 | 0−1 |
| The average gaming FPS of GeForce GTX 670MX SLI in Call of Duty: Warzone is 10% more, than GeForce 840A. | ||
| low / 768p | 120−130 | 230−240 |
| medium / 768p | 90−95 | 210−220 |
| ultra / 1080p | 40−45 | 130−140 |
| QHD / 1440p | 24−27 | 100−110 |
| 4K / 2160p | 18−20 | 55−60 |
| high / 768p | 65−70 | 170−180 |
| The average gaming FPS of GeForce GTX 670MX SLI in Counter-Strike: Global Offensive is 146% more, than GeForce 840A. | ||
| low / 768p | 80−85 | 60−65 |
| ultra / 1080p | 14−16 | 55−60 |
| medium / 1080p | 40−45 | 55−60 |
| The average gaming FPS of GeForce GTX 670MX SLI in Cyberpunk 2077 is 28% more, than GeForce 840A. | ||
| low / 768p | 75−80 | 120−130 |
| medium / 768p | 50−55 | 110−120 |
| ultra / 1080p | 27−30 | 85−90 |
| The average gaming FPS of GeForce GTX 670MX SLI in Dota 2 is 109% more, than GeForce 840A. | ||
| high / 1080p | 5−6 | 27−30 |
| ultra / 1080p | − | 24−27 |
| QHD / 1440p | − | 21−24 |
| 4K / 2160p | 2−3 | 9−10 |
| low / 720p | 14−16 | 55−60 |
| medium / 1080p | 6−7 | 30−33 |
| The average gaming FPS of GeForce GTX 670MX SLI in Far Cry 5 is 342% more, than GeForce 840A. | ||
| high / 1080p | 12−14 | 35−40 |
| ultra / 1080p | 7−8 | 27−30 |
| QHD / 1440p | − | 16−18 |
| low / 720p | 50−55 | 130−140 |
| medium / 1080p | 14−16 | 80−85 |
| The average gaming FPS of GeForce GTX 670MX SLI in Fortnite is 218% more, than GeForce 840A. | ||
| high / 1080p | 7−8 | 35−40 |
| ultra / 1080p | − | 27−30 |
| QHD / 1440p | 0−1 | 16−18 |
| 4K / 2160p | − | 14−16 |
| low / 720p | 20−22 | 75−80 |
| medium / 1080p | 9−10 | 40−45 |
| The average gaming FPS of GeForce GTX 670MX SLI in Forza Horizon 4 is 333% more, than GeForce 840A. | ||
| low / 768p | 45−50 | 110−120 |
| medium / 768p | − | 100−105 |
| high / 1080p | 8−9 | 45−50 |
| ultra / 1080p | 5−6 | 18−20 |
| QHD / 1440p | 0−1 | 9−10 |
| medium / 720p | 40−45 | − |
| The average gaming FPS of GeForce GTX 670MX SLI in Grand Theft Auto V is 200% more, than GeForce 840A. | ||
| high / 1080p | 3−4 | 14−16 |
| ultra / 1080p | 1−2 | 12−14 |
| QHD / 1440p | − | 10−12 |
| 4K / 2160p | 0−1 | 3−4 |
| low / 720p | 8−9 | 45−50 |
| medium / 1080p | 4−5 | 20−22 |
| The average gaming FPS of GeForce GTX 670MX SLI in Metro Exodus is 500% more, than GeForce 840A. | ||
| low / 768p | 85−90 | 120−130 |
| high / 1080p | 85−90 | − |
| ultra / 1080p | 80−85 | − |
| medium / 1080p | 85−90 | 110−120 |
| The average gaming FPS of GeForce GTX 670MX SLI in Minecraft is 37% more, than GeForce 840A. | ||
| ultra / 1080p | 12−14 | 14−16 |
| low / 720p | 27−30 | 75−80 |
| medium / 1080p | 14−16 | 18−20 |
| The average gaming FPS of GeForce GTX 670MX SLI in PLAYERUNKNOWN'S BATTLEGROUNDS is 105% more, than GeForce 840A. | ||
| high / 1080p | − | 16−18 |
| ultra / 1080p | 7−8 | 10−12 |
| QHD / 1440p | 0−1 | 3−4 |
| 4K / 2160p | − | 2−3 |
| low / 720p | 8−9 | 40−45 |
| medium / 1080p | − | 21−24 |
| The average gaming FPS of GeForce GTX 670MX SLI in Red Dead Redemption 2 is 225% more, than GeForce 840A. | ||
| low / 768p | 16−18 | 80−85 |
| medium / 768p | 12−14 | 50−55 |
| high / 1080p | 6−7 | 27−30 |
| ultra / 1080p | 5−6 | 16−18 |
| 4K / 2160p | − | 9−10 |
| The average gaming FPS of GeForce GTX 670MX SLI in The Witcher 3: Wild Hunt is 350% more, than GeForce 840A. | ||
| low / 768p | 70−75 | 90−95 |
| medium / 768p | 35−40 | 60−65 |
| ultra / 1080p | 16−18 | 40−45 |
| high / 768p | 30−35 | 55−60 |
| The average gaming FPS of GeForce GTX 670MX SLI in World of Tanks is 61% more, than GeForce 840A. | ||
Full Specs
| GeForce 840A | GeForce GTX 670MX SLI | |
| Architecture | Maxwell | Kepler |
| Code name | GM108 | N13E-GR |
| Type | Desktop | Laptop |
| Release date | 17 March 2014 | 1 October 2012 |
| Pipelines | 384 | 1920 |
| Core clock speed | 1029 MHz | 600 MHz |
| Boost Clock | 1124 MHz | |
| Transistor count | 5080 Million | |
| Manufacturing process technology | 28 nm | 28 nm |
| Texture fill rate | 17.98 | |
| Floating-point performance | 863.2 gflops | |
| Memory bus width | 64 Bit | 2x 192 Bit |
| Memory clock speed | 2002 MHz | 2800 MHz |
| Memory bandwidth | 16.02 GB/s | |
| Shared memory | - | |
| DirectX | 12 (11_0) | DirectX 11, Shader 5.1 |
| Shader Model | 5.1 | |
| OpenGL | 4.6 | |
| OpenCL | 1.2 | |
| Vulkan | 1.1.126 | |
| CUDA | 5.0 | + |
| SLI options | + | |
| Laptop size | large | |
| Optimus | + | |
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