GeForce 840A vs Radeon RX 640
When choosing between GeForce 840A and Radeon RX 640, 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 Radeon RX 640.
GeForce 840A
Radeon RX 640 is a Laptop Graphics Card
Note: Radeon RX 640 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 Radeon RX 640 here:
Main Specs
| GeForce 840A | Radeon RX 640 | |
| Power consumption (TDP) | 33 Watt | 50 Watt |
| Interface | PCIe 3.0 x8 | PCIe 3.0 x8 |
| Supplementary power connectors | None | |
| Memory type | DDR3 | GDDR5 |
| Maximum RAM amount | 2 GB | 4 GB |
| Display Connectors | No outputs | 1x DVI, 1x HDMI, 1x DisplayPort |
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- Radeon RX 640 has 51% more power consumption, than GeForce 840A.
- Both video cards are using PCIe 3.0 x8 interface connection to a motherboard.
- Radeon RX 640 has 2 GB more memory, than GeForce 840A.
- GeForce 840A is used in Desktops, and Radeon RX 640 - in Laptops.
- GeForce 840A is build with Maxwell architecture, and Radeon RX 640 - with Polaris.
- Core clock speed of Radeon RX 640 is 189 MHz higher, than GeForce 840A.
- GeForce 840A is manufactured by 28 nm process technology, and Radeon RX 640 - by 14 nm process technology.
- Memory clock speed of Radeon RX 640 is 3998 MHz higher, than GeForce 840A.
Game benchmarks
| high / 1080p | 3−4 | 5−6 |
| ultra / 1080p | 2−3 | 3−4 |
| QHD / 1440p | 0−1 | 2−3 |
| low / 720p | 14−16 | 16−18 |
| medium / 1080p | 5−6 | 7−8 |
| The average gaming FPS of Radeon RX 640 in Assassin's Creed Odyssey is 33% more, than GeForce 840A. | ||
| high / 1080p | − | 10−12 |
| ultra / 1080p | 7−8 | 8−9 |
| QHD / 1440p | 0−1 | 0−1 |
| low / 720p | 18−20 | 24−27 |
| medium / 1080p | 8−9 | 10−12 |
| The average gaming FPS of Radeon RX 640 in Battlefield 5 is 36% more, than GeForce 840A. | ||
| low / 768p | 45−50 | 45−50 |
| high / 1080p | 30−35 | 40−45 |
| QHD / 1440p | 0−1 | 0−1 |
| The average gaming FPS of Radeon RX 640 in Call of Duty: Warzone is 12% more, than GeForce 840A. | ||
| low / 768p | 120−130 | 130−140 |
| medium / 768p | 90−95 | 100−110 |
| ultra / 1080p | 40−45 | 50−55 |
| QHD / 1440p | 24−27 | 27−30 |
| 4K / 2160p | 18−20 | 12−14 |
| high / 768p | 65−70 | 80−85 |
| The average gaming FPS of Radeon RX 640 in Counter-Strike: Global Offensive is 11% more, than GeForce 840A. | ||
| low / 768p | 80−85 | 50−55 |
| ultra / 1080p | 14−16 | 18−20 |
| medium / 1080p | 40−45 | 45−50 |
| The average gaming FPS of GeForce 840A in Cyberpunk 2077 is 17% more, than Radeon RX 640. | ||
| low / 768p | 75−80 | 80−85 |
| medium / 768p | 50−55 | 55−60 |
| ultra / 1080p | 27−30 | 30−35 |
| The average gaming FPS of Radeon RX 640 in Dota 2 is 9% more, than GeForce 840A. | ||
| high / 1080p | 5−6 | 7−8 |
| ultra / 1080p | − | 5−6 |
| 4K / 2160p | 2−3 | 5−6 |
| low / 720p | 14−16 | 18−20 |
| medium / 1080p | 6−7 | 8−9 |
| The average gaming FPS of Radeon RX 640 in Far Cry 5 is 42% more, than GeForce 840A. | ||
| high / 1080p | 12−14 | 7−8 |
| ultra / 1080p | 7−8 | 0−1 |
| QHD / 1440p | − | 0−1 |
| low / 720p | 50−55 | 60−65 |
| medium / 1080p | 14−16 | 18−20 |
| The average gaming FPS of Radeon RX 640 in Fortnite is 11% more, than GeForce 840A. | ||
| high / 1080p | 7−8 | 10−11 |
| QHD / 1440p | 0−1 | − |
| 4K / 2160p | − | 8−9 |
| low / 720p | 20−22 | 24−27 |
| medium / 1080p | 9−10 | 12−14 |
| The average gaming FPS of Radeon RX 640 in Forza Horizon 4 is 33% more, than GeForce 840A. | ||
| low / 768p | 45−50 | 50−55 |
| high / 1080p | 8−9 | 10−12 |
| ultra / 1080p | 5−6 | 5−6 |
| QHD / 1440p | 0−1 | − |
| medium / 720p | 40−45 | 45−50 |
| The average gaming FPS of Radeon RX 640 in Grand Theft Auto V is 11% more, than GeForce 840A. | ||
| high / 1080p | 3−4 | 3−4 |
| ultra / 1080p | 1−2 | 1−2 |
| 4K / 2160p | 0−1 | − |
| low / 720p | 8−9 | 10−11 |
| medium / 1080p | 4−5 | 5−6 |
| The average gaming FPS of Radeon RX 640 in Metro Exodus is 25% more, than GeForce 840A. | ||
| low / 768p | 85−90 | 90−95 |
| high / 1080p | 85−90 | − |
| ultra / 1080p | 80−85 | 80−85 |
| medium / 1080p | 85−90 | − |
| The average gaming FPS of Radeon RX 640 in Minecraft is 2% more, than GeForce 840A. | ||
| high / 1080p | − | 6−7 |
| ultra / 1080p | 12−14 | 2−3 |
| 4K / 2160p | − | 0−1 |
| low / 720p | 27−30 | 27−30 |
| medium / 1080p | 14−16 | 10−11 |
| The average gaming FPS of GeForce 840A in PLAYERUNKNOWN'S BATTLEGROUNDS is 38% more, than Radeon RX 640. | ||
| ultra / 1080p | 7−8 | − |
| QHD / 1440p | 0−1 | − |
| low / 720p | 8−9 | 10−12 |
| medium / 1080p | − | 9−10 |
| The average gaming FPS of Radeon RX 640 in Red Dead Redemption 2 is 37% more, than GeForce 840A. | ||
| low / 768p | 16−18 | 21−24 |
| medium / 768p | 12−14 | 14−16 |
| high / 1080p | 6−7 | 6−7 |
| ultra / 1080p | 5−6 | 4−5 |
| 4K / 2160p | − | 3−4 |
| The average gaming FPS of Radeon RX 640 in The Witcher 3: Wild Hunt is 20% more, than GeForce 840A. | ||
| low / 768p | 70−75 | 75−80 |
| medium / 768p | 35−40 | 40−45 |
| ultra / 1080p | 16−18 | 18−20 |
| high / 768p | 30−35 | 35−40 |
| The average gaming FPS of Radeon RX 640 in World of Tanks is 12% more, than GeForce 840A. | ||
Full Specs
| GeForce 840A | Radeon RX 640 | |
| Architecture | Maxwell | Polaris |
| Code name | GM108 | Polaris 12 |
| Type | Desktop | Laptop |
| Release date | 17 March 2014 | 12 August 2019 |
| Pipelines | 384 | 640 |
| Core clock speed | 1029 MHz | 1218 MHz |
| Boost Clock | 1124 MHz | 1218 MHz |
| Transistor count | 2,200 million | |
| Manufacturing process technology | 28 nm | 14 nm |
| Texture fill rate | 17.98 | 38.98 |
| Floating-point performance | 863.2 gflops | |
| Memory bus width | 64 Bit | 64 Bit |
| Memory clock speed | 2002 MHz | 6000 MHz |
| Memory bandwidth | 16.02 GB/s | 112.0 GB/s |
| Shared memory | - | |
| DirectX | 12 (11_0) | 12 (12_0) |
| Shader Model | 5.1 | 6.4 |
| OpenGL | 4.6 | 4.6 |
| OpenCL | 1.2 | 2.0 |
| Vulkan | 1.1.126 | 1.2.131 |
| CUDA | 5.0 | |
| FreeSync | + | |
| Laptop size | large | |
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