GeForce 820A vs Radeon RX 640
If you are going to buy a new graphics card and are choosing between GeForce 820A and Radeon RX 640, 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 820A stacks up against Radeon RX 640, check out specs charts below.
GeForce 820A
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 820A | Radeon RX 640 | |
| Power consumption (TDP) | 15 Watt | 50 Watt |
| Interface | PCIe 2.0 x16 | PCIe 3.0 x8 |
| Supplementary power connectors | None | |
| Memory type | DDR3 | GDDR5 |
| Maximum RAM amount | 1 GB | 4 GB |
| Display Connectors | No outputs | 1x DVI, 1x HDMI, 1x DisplayPort |
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- Radeon RX 640 has 233% more power consumption, than GeForce 820A.
- GeForce 820A is connected by PCIe 2.0 x16, and Radeon RX 640 uses PCIe 3.0 x8 interface.
- Radeon RX 640 has 3 GB more memory, than GeForce 820A.
- GeForce 820A is used in Desktops, and Radeon RX 640 - in Laptops.
- GeForce 820A is build with Fermi 2.0 architecture, and Radeon RX 640 - with Polaris.
- Core clock speed of Radeon RX 640 is 443 MHz higher, than GeForce 820A.
- GeForce 820A is manufactured by 28 nm process technology, and Radeon RX 640 - by 14 nm process technology.
- Memory clock speed of Radeon RX 640 is 4200 MHz higher, than GeForce 820A.
Game benchmarks
| high / 1080p | 0−1 | 5−6 |
| ultra / 1080p | − | 3−4 |
| QHD / 1440p | 0−1 | 2−3 |
| low / 720p | 1−2 | 16−18 |
| medium / 1080p | 0−1 | 7−8 |
| The average gaming FPS of Radeon RX 640 in Assassin's Creed Odyssey is 1600% more, than GeForce 820A. | ||
| high / 1080p | − | 10−12 |
| ultra / 1080p | − | 8−9 |
| QHD / 1440p | 0−1 | 0−1 |
| low / 720p | 0−1 | 24−27 |
| medium / 1080p | − | 10−12 |
| low / 768p | 50−55 | 45−50 |
| high / 1080p | 45−50 | 40−45 |
| QHD / 1440p | 0−1 | 0−1 |
| The average gaming FPS of GeForce 820A in Call of Duty: Warzone is 11% more, than Radeon RX 640. | ||
| low / 768p | 60−65 | 130−140 |
| medium / 768p | 27−30 | 100−110 |
| ultra / 1080p | 7−8 | 50−55 |
| QHD / 1440p | − | 27−30 |
| 4K / 2160p | − | 12−14 |
| high / 768p | 16−18 | 80−85 |
| The average gaming FPS of Radeon RX 640 in Counter-Strike: Global Offensive is 232% more, than GeForce 820A. | ||
| low / 768p | 70−75 | 50−55 |
| ultra / 1080p | 0−1 | 18−20 |
| medium / 1080p | 45−50 | 45−50 |
| The average gaming FPS of GeForce 820A in Cyberpunk 2077 is 20% more, than Radeon RX 640. | ||
| low / 768p | 45−50 | 80−85 |
| medium / 768p | 10−11 | 55−60 |
| ultra / 1080p | 0−1 | 30−35 |
| The average gaming FPS of Radeon RX 640 in Dota 2 is 141% more, than GeForce 820A. | ||
| high / 1080p | − | 7−8 |
| ultra / 1080p | − | 5−6 |
| 4K / 2160p | − | 5−6 |
| low / 720p | 0−1 | 18−20 |
| medium / 1080p | − | 8−9 |
| high / 1080p | − | 7−8 |
| ultra / 1080p | − | 0−1 |
| QHD / 1440p | − | 0−1 |
| low / 720p | 21−24 | 60−65 |
| medium / 1080p | 0−1 | 18−20 |
| The average gaming FPS of Radeon RX 640 in Fortnite is 181% more, than GeForce 820A. | ||
| high / 1080p | 0−1 | 10−11 |
| QHD / 1440p | 0−1 | − |
| 4K / 2160p | − | 8−9 |
| low / 720p | 0−1 | 24−27 |
| medium / 1080p | 0−1 | 12−14 |
| low / 768p | 18−20 | 50−55 |
| high / 1080p | 0−1 | 10−12 |
| ultra / 1080p | − | 5−6 |
| QHD / 1440p | 0−1 | − |
| medium / 720p | 12−14 | 45−50 |
| The average gaming FPS of Radeon RX 640 in Grand Theft Auto V is 212% more, than GeForce 820A. | ||
| high / 1080p | − | 3−4 |
| ultra / 1080p | − | 1−2 |
| low / 720p | 0−1 | 10−11 |
| medium / 1080p | − | 5−6 |
| low / 768p | 75−80 | 90−95 |
| high / 1080p | 27−30 | − |
| ultra / 1080p | − | 80−85 |
| The average gaming FPS of Radeon RX 640 in Minecraft is 19% more, than GeForce 820A. | ||
| high / 1080p | − | 6−7 |
| ultra / 1080p | − | 2−3 |
| 4K / 2160p | − | 0−1 |
| low / 720p | 8−9 | 27−30 |
| medium / 1080p | − | 10−11 |
| The average gaming FPS of Radeon RX 640 in PLAYERUNKNOWN'S BATTLEGROUNDS is 250% more, than GeForce 820A. | ||
| low / 720p | 0−1 | 10−12 |
| medium / 1080p | − | 9−10 |
| low / 768p | 0−1 | 21−24 |
| medium / 768p | − | 14−16 |
| high / 1080p | − | 6−7 |
| ultra / 1080p | − | 4−5 |
| 4K / 2160p | − | 3−4 |
| low / 768p | 45−50 | 75−80 |
| medium / 768p | 14−16 | 40−45 |
| ultra / 1080p | 0−1 | 18−20 |
| high / 768p | 12−14 | 35−40 |
| The average gaming FPS of Radeon RX 640 in World of Tanks is 108% more, than GeForce 820A. | ||
Full Specs
| GeForce 820A | Radeon RX 640 | |
| Architecture | Fermi 2.0 | Polaris |
| Code name | GF117 | Polaris 12 |
| Type | Desktop | Laptop |
| Release date | 17 March 2014 | 12 August 2019 |
| Pipelines | 96 | 640 |
| Core clock speed | 775 MHz | 1218 MHz |
| Boost Clock | 1218 MHz | |
| Transistor count | 585 million | 2,200 million |
| Manufacturing process technology | 28 nm | 14 nm |
| Texture fill rate | 12.40 | 38.98 |
| Floating-point performance | 297.6 gflops | |
| Memory bus width | 64 Bit | 64 Bit |
| Memory clock speed | 1800 MHz | 6000 MHz |
| Memory bandwidth | 14.4 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 | 1.1 | 2.0 |
| Vulkan | N/A | 1.2.131 |
| CUDA | 2.1 | |
| FreeSync | + | |
| Laptop size | large | |
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