GeForce 820A vs Mobility Radeon HD 4870
If you are going to buy a new graphics card and are choosing between GeForce 820A and Mobility Radeon HD 4870, 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 Mobility Radeon HD 4870, check out specs charts below.
GeForce 820A
Mobility Radeon HD 4870 is a Laptop Graphics Card
Note: Mobility Radeon HD 4870 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 Mobility Radeon HD 4870 here:
Main Specs
| GeForce 820A | Mobility Radeon HD 4870 | |
| Power consumption (TDP) | 15 Watt | |
| Interface | PCIe 2.0 x16 | PCIe 2.0 x16 |
| Memory type | DDR3 | GDDR5 |
| Maximum RAM amount | 1 GB | 1 GB |
| Display Connectors | No outputs | No outputs |
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- Both video cards are using PCIe 2.0 x16 interface connection to a motherboard.
- GeForce 820A and Mobility Radeon HD 4870 have maximum RAM of 1 GB.
- GeForce 820A is used in Desktops, and Mobility Radeon HD 4870 - in Laptops.
- GeForce 820A is build with Fermi 2.0 architecture, and Mobility Radeon HD 4870 - with Terascale 1.
- Core clock speed of GeForce 820A is 225 MHz higher, than Mobility Radeon HD 4870.
- GeForce 820A is manufactured by 28 nm process technology, and Mobility Radeon HD 4870 - by 55 nm process technology.
- Memory clock speed of GeForce 820A is 912 MHz higher, than Mobility Radeon HD 4870.
Game benchmarks
| high / 1080p | 0−1 | 7−8 |
| ultra / 1080p | − | 4−5 |
| QHD / 1440p | 0−1 | 0−1 |
| low / 720p | 1−2 | 16−18 |
| medium / 1080p | 0−1 | 8−9 |
| The average gaming FPS of Mobility Radeon HD 4870 in Assassin's Creed Odyssey is 1600% more, than GeForce 820A. | ||
| high / 1080p | − | 12−14 |
| ultra / 1080p | − | 10−11 |
| QHD / 1440p | 0−1 | 0−1 |
| low / 720p | 0−1 | 24−27 |
| medium / 1080p | − | 12−14 |
| low / 768p | 50−55 | 45−50 |
| high / 1080p | 45−50 | 45−50 |
| QHD / 1440p | 0−1 | 0−1 |
| The average gaming FPS of GeForce 820A in Call of Duty: Warzone is 6% more, than Mobility Radeon HD 4870. | ||
| low / 768p | 60−65 | 140−150 |
| medium / 768p | 27−30 | 110−120 |
| ultra / 1080p | 7−8 | 55−60 |
| QHD / 1440p | − | 30−33 |
| 4K / 2160p | − | 27−30 |
| high / 768p | 16−18 | 80−85 |
| The average gaming FPS of Mobility Radeon HD 4870 in Counter-Strike: Global Offensive is 257% more, than GeForce 820A. | ||
| low / 768p | 70−75 | 55−60 |
| ultra / 1080p | 0−1 | 20−22 |
| medium / 1080p | 45−50 | 45−50 |
| The average gaming FPS of GeForce 820A in Cyberpunk 2077 is 15% more, than Mobility Radeon HD 4870. | ||
| low / 768p | 45−50 | 80−85 |
| medium / 768p | 10−11 | 60−65 |
| ultra / 1080p | 0−1 | 35−40 |
| The average gaming FPS of Mobility Radeon HD 4870 in Dota 2 is 148% more, than GeForce 820A. | ||
| high / 1080p | − | 8−9 |
| ultra / 1080p | − | 8−9 |
| 4K / 2160p | − | 3−4 |
| low / 720p | 0−1 | 18−20 |
| medium / 1080p | − | 9−10 |
| high / 1080p | − | 14−16 |
| ultra / 1080p | − | 10−11 |
| low / 720p | 21−24 | 60−65 |
| medium / 1080p | 0−1 | 24−27 |
| The average gaming FPS of Mobility Radeon HD 4870 in Fortnite is 181% more, than GeForce 820A. | ||
| high / 1080p | 0−1 | 12−14 |
| ultra / 1080p | − | 10−12 |
| QHD / 1440p | 0−1 | 1−2 |
| low / 720p | 0−1 | 27−30 |
| medium / 1080p | 0−1 | 14−16 |
| low / 768p | 18−20 | 50−55 |
| medium / 768p | − | 45−50 |
| high / 1080p | 0−1 | 12−14 |
| ultra / 1080p | − | 6−7 |
| QHD / 1440p | 0−1 | 0−1 |
| medium / 720p | 12−14 | − |
| The average gaming FPS of Mobility Radeon HD 4870 in Grand Theft Auto V is 173% more, than GeForce 820A. | ||
| high / 1080p | − | 5−6 |
| ultra / 1080p | − | 3−4 |
| 4K / 2160p | − | 0−1 |
| low / 720p | 0−1 | 12−14 |
| medium / 1080p | − | 6−7 |
| low / 768p | 75−80 | 95−100 |
| high / 1080p | 27−30 | 90−95 |
| ultra / 1080p | − | 80−85 |
| medium / 1080p | − | 90−95 |
| The average gaming FPS of Mobility Radeon HD 4870 in Minecraft is 79% more, than GeForce 820A. | ||
| high / 1080p | − | 16−18 |
| ultra / 1080p | − | 14−16 |
| low / 720p | 8−9 | 30−35 |
| medium / 1080p | − | 18−20 |
| The average gaming FPS of Mobility Radeon HD 4870 in PLAYERUNKNOWN'S BATTLEGROUNDS is 300% more, than GeForce 820A. | ||
| ultra / 1080p | − | 7−8 |
| QHD / 1440p | − | 0−1 |
| low / 720p | 0−1 | 12−14 |
| medium / 1080p | − | 10−12 |
| low / 768p | 0−1 | 24−27 |
| medium / 768p | − | 16−18 |
| high / 1080p | − | 9−10 |
| ultra / 1080p | − | 6−7 |
| 4K / 2160p | − | 6−7 |
| low / 768p | 45−50 | 85−90 |
| medium / 768p | 14−16 | 45−50 |
| ultra / 1080p | 0−1 | 20−22 |
| high / 768p | 12−14 | 35−40 |
| The average gaming FPS of Mobility Radeon HD 4870 in World of Tanks is 128% more, than GeForce 820A. | ||
Full Specs
| GeForce 820A | Mobility Radeon HD 4870 | |
| Architecture | Fermi 2.0 | Terascale 1 |
| Code name | GF117 | M98-XT |
| Type | Desktop | Laptop |
| Release date | 17 March 2014 | 9 January 2009 |
| Pipelines | 96 | 800 |
| Core clock speed | 775 MHz | 550 MHz |
| Transistor count | 585 million | 956 million |
| Manufacturing process technology | 28 nm | 55 nm |
| Texture fill rate | 12.40 | 22.00 |
| Floating-point performance | 297.6 gflops | 880.0 gflops |
| Memory bus width | 64 Bit | 256 Bit |
| Memory clock speed | 1800 MHz | 888 MHz |
| Memory bandwidth | 14.4 GB/s | 56.83 GB/s |
| Shared memory | - | |
| DirectX | 12 (11_0) | 10.1 (10_1) |
| Shader Model | 5.1 | 4.1 |
| OpenGL | 4.6 | 3.3 |
| OpenCL | 1.1 | 1.1 |
| Vulkan | N/A | N/A |
| CUDA | 2.1 | |
| Laptop size | large | |
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