GeForce 820A vs GeForce 845M
If you are going to buy a new graphics card and are choosing between GeForce 820A and GeForce 845M, 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 GeForce 845M, check out specs charts below.
GeForce 820A
GeForce 845M is a Laptop Graphics Card
Note: GeForce 845M 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 845M here:
Main Specs
| GeForce 820A | GeForce 845M | |
| Power consumption (TDP) | 15 Watt | 45 Watt |
| Interface | PCIe 2.0 x16 | PCIe 3.0 x8 |
| Memory type | DDR3 | DDR3, GDDR5 |
| Maximum RAM amount | 1 GB | 2 GB |
| Display Connectors | No outputs | No outputs |
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- GeForce 845M has 200% more power consumption, than GeForce 820A.
- GeForce 820A is connected by PCIe 2.0 x16, and GeForce 845M uses PCIe 3.0 x8 interface.
- GeForce 845M has 1 GB more memory, than GeForce 820A.
- GeForce 820A is used in Desktops, and GeForce 845M - in Laptops.
- GeForce 820A is build with Fermi 2.0 architecture, and GeForce 845M - with Maxwell.
- Core clock speed of GeForce 845M is 296 MHz higher, than GeForce 820A.
- GeForce 820A and GeForce 845M are manufactured by 28 nm process technology.
- Memory clock speed of GeForce 845M is 200 MHz higher, than GeForce 820A.
Game benchmarks
| high / 1080p | 0−1 | 3−4 |
| ultra / 1080p | − | 1−2 |
| QHD / 1440p | 0−1 | 0−1 |
| low / 720p | 1−2 | 14−16 |
| medium / 1080p | 0−1 | 6−7 |
| The average gaming FPS of GeForce 845M in Assassin's Creed Odyssey is 1400% more, than GeForce 820A. | ||
| high / 1080p | − | 10−11 |
| ultra / 1080p | − | 7−8 |
| QHD / 1440p | 0−1 | 0−1 |
| low / 720p | 0−1 | 21−24 |
| medium / 1080p | − | 10−11 |
| 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 GeForce 845M. | ||
| low / 768p | 60−65 | 130−140 |
| medium / 768p | 27−30 | 100−110 |
| ultra / 1080p | 7−8 | 50−55 |
| QHD / 1440p | − | 24−27 |
| 4K / 2160p | − | 12−14 |
| high / 768p | 16−18 | 75−80 |
| The average gaming FPS of GeForce 845M in Counter-Strike: Global Offensive is 228% more, than GeForce 820A. | ||
| low / 768p | 70−75 | 85−90 |
| ultra / 1080p | 0−1 | 21−24 |
| medium / 1080p | 45−50 | 45−50 |
| The average gaming FPS of GeForce 845M in Cyberpunk 2077 is 11% more, than GeForce 820A. | ||
| low / 768p | 45−50 | 75−80 |
| medium / 768p | 10−11 | 50−55 |
| ultra / 1080p | 0−1 | 30−33 |
| The average gaming FPS of GeForce 845M in Dota 2 is 124% more, than GeForce 820A. | ||
| high / 1080p | − | 4−5 |
| ultra / 1080p | − | 4−5 |
| 4K / 2160p | − | 2−3 |
| low / 720p | 0−1 | 14−16 |
| medium / 1080p | − | 6−7 |
| high / 1080p | − | 6−7 |
| ultra / 1080p | − | 0−1 |
| QHD / 1440p | − | 0−1 |
| low / 720p | 21−24 | 55−60 |
| medium / 1080p | 0−1 | 16−18 |
| The average gaming FPS of GeForce 845M in Fortnite is 159% more, than GeForce 820A. | ||
| high / 1080p | 0−1 | 9−10 |
| ultra / 1080p | − | 8−9 |
| QHD / 1440p | 0−1 | 3−4 |
| 4K / 2160p | − | 3−4 |
| low / 720p | 0−1 | 21−24 |
| medium / 1080p | 0−1 | 10−12 |
| low / 768p | 18−20 | 50−55 |
| high / 1080p | 0−1 | 10−11 |
| ultra / 1080p | − | 4−5 |
| QHD / 1440p | 0−1 | − |
| medium / 720p | 12−14 | 40−45 |
| The average gaming FPS of GeForce 845M in Grand Theft Auto V is 193% more, than GeForce 820A. | ||
| high / 1080p | − | 3−4 |
| ultra / 1080p | − | 1−2 |
| low / 720p | 0−1 | 10−11 |
| medium / 1080p | − | 4−5 |
| low / 768p | 75−80 | 90−95 |
| high / 1080p | 27−30 | 65−70 |
| medium / 1080p | − | 90−95 |
| The average gaming FPS of GeForce 845M in Minecraft is 50% more, than GeForce 820A. | ||
| high / 1080p | − | 5−6 |
| ultra / 1080p | − | 1−2 |
| 4K / 2160p | − | 0−1 |
| low / 720p | 8−9 | 27−30 |
| medium / 1080p | − | 9−10 |
| The average gaming FPS of GeForce 845M in PLAYERUNKNOWN'S BATTLEGROUNDS is 250% more, than GeForce 820A. | ||
| low / 720p | 0−1 | 10−11 |
| medium / 1080p | − | 8−9 |
| low / 768p | 0−1 | 20−22 |
| medium / 768p | − | 12−14 |
| 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 | 16−18 |
| high / 768p | 12−14 | 30−35 |
| The average gaming FPS of GeForce 845M in World of Tanks is 100% more, than GeForce 820A. | ||
Full Specs
| GeForce 820A | GeForce 845M | |
| Architecture | Fermi 2.0 | Maxwell |
| Code name | GF117 | GM108 |
| Type | Desktop | Laptop |
| Release date | 17 March 2014 | 12 March 2014 |
| Pipelines | 96 | 384 |
| Core clock speed | 775 MHz | 1071 MHz |
| Boost Clock | 1150 MHz | |
| Transistor count | 585 million | 1,870 million |
| Manufacturing process technology | 28 nm | 28 nm |
| Texture fill rate | 12.40 | 37.63 |
| Floating-point performance | 297.6 gflops | 883.7 gflops |
| Memory bus width | 64 Bit | 64/128 Bit |
| Memory clock speed | 1800 MHz | 2000 - 5000 MHz |
| Memory bandwidth | 14.4 GB/s | 40.1 GB/s |
| Shared memory | - | |
| DirectX | 12 (11_0) | 12 (11_0) |
| Shader Model | 5.1 | 5.1 |
| OpenGL | 4.6 | 4.6 |
| OpenCL | 1.1 | 1.2 |
| Vulkan | N/A | 1.1.126 |
| CUDA | 2.1 | + |
| Bitcoin / BTC (SHA256) | 76 Mh/s | |
| Laptop size | medium sized | |
| Optimus | + | |
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