GeForce 820A vs Radeon R9 M390X
If you are going to buy a new graphics card and are choosing between GeForce 820A and Radeon R9 M390X, 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 R9 M390X, check out specs charts below.
GeForce 820A
Radeon R9 M390X is a Laptop Graphics Card
Note: Radeon R9 M390X 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 R9 M390X here:
Main Specs
| GeForce 820A | Radeon R9 M390X | |
| Power consumption (TDP) | 15 Watt | 100 Watt |
| Interface | PCIe 2.0 x16 | PCIe 3.0 x16 |
| Supplementary power connectors | None | |
| Memory type | DDR3 | GDDR5 |
| Maximum RAM amount | 1 GB | 4 GB |
| Display Connectors | No outputs | No outputs |
| Check Price |
- Radeon R9 M390X has 566% more power consumption, than GeForce 820A.
- GeForce 820A is connected by PCIe 2.0 x16, and Radeon R9 M390X uses PCIe 3.0 x16 interface.
- Radeon R9 M390X has 3 GB more memory, than GeForce 820A.
- GeForce 820A is used in Desktops, and Radeon R9 M390X - in Laptops.
- GeForce 820A is build with Fermi 2.0 architecture, and Radeon R9 M390X - with GCN 3.
- Core clock speed of GeForce 820A is 52 MHz higher, than Radeon R9 M390X.
- GeForce 820A and Radeon R9 M390X are manufactured by 28 nm process technology.
Game benchmarks
| high / 1080p | 0−1 | 21−24 |
| ultra / 1080p | − | 12−14 |
| QHD / 1440p | 0−1 | 8−9 |
| 4K / 2160p | − | 5−6 |
| low / 720p | 1−2 | 40−45 |
| medium / 1080p | 0−1 | 27−30 |
| The average gaming FPS of Radeon R9 M390X in Assassin's Creed Odyssey is 4100% more, than GeForce 820A. | ||
| high / 1080p | − | 35−40 |
| ultra / 1080p | − | 30−35 |
| QHD / 1440p | 0−1 | 14−16 |
| 4K / 2160p | − | 9−10 |
| low / 720p | 0−1 | 70−75 |
| medium / 1080p | − | 40−45 |
| low / 768p | 50−55 | 50−55 |
| high / 1080p | 45−50 | − |
| QHD / 1440p | 0−1 | 0−1 |
| GeForce 820A and Radeon R9 M390X have the same average FPS in Call of Duty: Warzone. | ||
| low / 768p | 60−65 | 230−240 |
| medium / 768p | 27−30 | 210−220 |
| ultra / 1080p | 7−8 | 120−130 |
| QHD / 1440p | − | 100−110 |
| 4K / 2160p | − | 55−60 |
| high / 768p | 16−18 | 170−180 |
| The average gaming FPS of Radeon R9 M390X in Counter-Strike: Global Offensive is 567% more, than GeForce 820A. | ||
| low / 768p | 70−75 | 60−65 |
| ultra / 1080p | 0−1 | 55−60 |
| medium / 1080p | 45−50 | 55−60 |
| GeForce 820A and Radeon R9 M390X have the same average FPS in Cyberpunk 2077. | ||
| low / 768p | 45−50 | 120−130 |
| medium / 768p | 10−11 | 110−120 |
| ultra / 1080p | 0−1 | 85−90 |
| The average gaming FPS of Radeon R9 M390X in Dota 2 is 313% more, than GeForce 820A. | ||
| high / 1080p | − | 27−30 |
| ultra / 1080p | − | 24−27 |
| QHD / 1440p | − | 20−22 |
| 4K / 2160p | − | 9−10 |
| low / 720p | 0−1 | 55−60 |
| medium / 1080p | − | 30−33 |
| high / 1080p | − | 35−40 |
| ultra / 1080p | − | 27−30 |
| QHD / 1440p | − | 16−18 |
| low / 720p | 21−24 | 130−140 |
| medium / 1080p | 0−1 | 75−80 |
| The average gaming FPS of Radeon R9 M390X in Fortnite is 513% more, than GeForce 820A. | ||
| high / 1080p | 0−1 | 35−40 |
| ultra / 1080p | − | 27−30 |
| QHD / 1440p | 0−1 | 16−18 |
| 4K / 2160p | − | 14−16 |
| low / 720p | 0−1 | 75−80 |
| medium / 1080p | 0−1 | 40−45 |
| low / 768p | 18−20 | 110−120 |
| medium / 768p | − | 95−100 |
| high / 1080p | 0−1 | 45−50 |
| ultra / 1080p | − | 18−20 |
| QHD / 1440p | 0−1 | 9−10 |
| medium / 720p | 12−14 | − |
| The average gaming FPS of Radeon R9 M390X in Grand Theft Auto V is 505% more, than GeForce 820A. | ||
| high / 1080p | − | 14−16 |
| ultra / 1080p | − | 10−12 |
| QHD / 1440p | − | 10−12 |
| 4K / 2160p | − | 3−4 |
| low / 720p | 0−1 | 40−45 |
| medium / 1080p | − | 20−22 |
| low / 768p | 75−80 | 120−130 |
| high / 1080p | 27−30 | − |
| medium / 1080p | − | 110−120 |
| The average gaming FPS of Radeon R9 M390X in Minecraft is 62% more, than GeForce 820A. | ||
| ultra / 1080p | − | 14−16 |
| low / 720p | 8−9 | 75−80 |
| medium / 1080p | − | 18−20 |
| The average gaming FPS of Radeon R9 M390X in PLAYERUNKNOWN'S BATTLEGROUNDS is 862% more, than GeForce 820A. | ||
| high / 1080p | − | 16−18 |
| ultra / 1080p | − | 10−12 |
| QHD / 1440p | − | 3−4 |
| 4K / 2160p | − | 2−3 |
| low / 720p | 0−1 | 40−45 |
| medium / 1080p | − | 21−24 |
| low / 768p | 0−1 | 80−85 |
| medium / 768p | − | 50−55 |
| high / 1080p | − | 27−30 |
| ultra / 1080p | − | 16−18 |
| 4K / 2160p | − | 9−10 |
| low / 768p | 45−50 | 90−95 |
| medium / 768p | 14−16 | 60−65 |
| ultra / 1080p | 0−1 | 40−45 |
| high / 768p | 12−14 | 55−60 |
| The average gaming FPS of Radeon R9 M390X in World of Tanks is 180% more, than GeForce 820A. | ||
Full Specs
| GeForce 820A | Radeon R9 M390X | |
| Architecture | Fermi 2.0 | GCN 3 |
| Code name | GF117 | Amethyst (XT) / Tonga |
| Type | Desktop | Laptop |
| Release date | 17 March 2014 | 9 June 2015 |
| Pipelines | 96 | 2048 |
| Core clock speed | 775 MHz | 723 MHz |
| Transistor count | 585 million | 5,000 million |
| Manufacturing process technology | 28 nm | 28 nm |
| Texture fill rate | 12.40 | 92.54 |
| Floating-point performance | 297.6 gflops | 2,961 gflops |
| Memory bus width | 64 Bit | 256 Bit |
| Memory clock speed | 1800 MHz | |
| Memory bandwidth | 14.4 GB/s | 160.0 GB/s |
| Shared memory | - | |
| DirectX | 12 (11_0) | |
| Shader Model | 5.1 | 6.3 |
| OpenGL | 4.6 | 4.4 |
| OpenCL | 1.1 | Not Listed |
| Vulkan | N/A | + |
| CUDA | 2.1 | |
| FreeSync | + | |
| Bus support | PCIe 3.0 | |
| Laptop size | large | |
| Eyefinity | + | |
| HD3D | + | |
| PowerTune | + | |
| DualGraphics | + | |
| ZeroCore | + | |
| Switchable graphics | + | |
| Mantle | + | |
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