GeForce 840A vs Radeon HD 8790M
In this comparison between GeForce 840A and Radeon HD 8790M you will find out which graphics card performs better in today's games. Bear in mind that third-party versions may have more efficient cooling and higher clock speeds. This will increase cards' performance, though not by much. In addition to raw power you should also take into account the dimensions. Thicker models simply will not fit into a small mini-ITX case. The resolution of your monitor also affects the choice, since 4K gameplay requires a more powerful GPU. And don't overspend on the graphics card. Other parts of your build may also need to be upgraded, save some money for the CPU or power supply. For some people GeForce 840A will be the best choice, for others Radeon HD 8790M will be their preference. Study the comparison tables below and make your choice.
GeForce 840A
Radeon HD 8790M is a Laptop Graphics Card
Note: Radeon HD 8790M 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 HD 8790M here:
Main Specs
| GeForce 840A | Radeon HD 8790M | |
| Power consumption (TDP) | 33 Watt | |
| Interface | PCIe 3.0 x8 | MXM-A (3.0) |
| Supplementary power connectors | None | |
| Memory type | DDR3 | GDDR5 |
| Maximum RAM amount | 2 GB | 2 GB |
| Display Connectors | No outputs | No outputs |
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- GeForce 840A is connected by PCIe 3.0 x8, and Radeon HD 8790M uses MXM-A (3.0) interface.
- GeForce 840A and Radeon HD 8790M have maximum RAM of 2 GB.
- GeForce 840A is used in Desktops, and Radeon HD 8790M - in Laptops.
- GeForce 840A is build with Maxwell architecture, and Radeon HD 8790M - with GCN.
- Core clock speed of GeForce 840A is 179 MHz higher, than Radeon HD 8790M.
- GeForce 840A and Radeon HD 8790M are manufactured by 28 nm process technology.
- Memory clock speed of Radeon HD 8790M is 2498 MHz higher, than GeForce 840A.
Game benchmarks
| high / 1080p | 3−4 | 3−4 |
| ultra / 1080p | 2−3 | 1−2 |
| QHD / 1440p | 0−1 | 0−1 |
| low / 720p | 14−16 | 14−16 |
| medium / 1080p | 5−6 | 6−7 |
| GeForce 840A and Radeon HD 8790M have the same average FPS in Assassin's Creed Odyssey. | ||
| high / 1080p | − | 8−9 |
| ultra / 1080p | 7−8 | 6−7 |
| QHD / 1440p | 0−1 | 0−1 |
| low / 720p | 18−20 | 21−24 |
| medium / 1080p | 8−9 | 9−10 |
| The average gaming FPS of Radeon HD 8790M in Battlefield 5 is 9% 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 HD 8790M in Call of Duty: Warzone is 12% more, than GeForce 840A. | ||
| low / 768p | 120−130 | 120−130 |
| medium / 768p | 90−95 | 100−110 |
| ultra / 1080p | 40−45 | 50−55 |
| QHD / 1440p | 24−27 | 24−27 |
| 4K / 2160p | 18−20 | − |
| high / 768p | 65−70 | 75−80 |
| The average gaming FPS of Radeon HD 8790M in Counter-Strike: Global Offensive is 10% more, than GeForce 840A. | ||
| low / 768p | 80−85 | 70−75 |
| ultra / 1080p | 14−16 | 21−24 |
| medium / 1080p | 40−45 | 40−45 |
| The average gaming FPS of GeForce 840A in Cyberpunk 2077 is 2% more, than Radeon HD 8790M. | ||
| low / 768p | 75−80 | 75−80 |
| medium / 768p | 50−55 | 55−60 |
| ultra / 1080p | 27−30 | 30−35 |
| The average gaming FPS of Radeon HD 8790M in Dota 2 is 5% more, than GeForce 840A. | ||
| high / 1080p | 5−6 | 4−5 |
| ultra / 1080p | − | 4−5 |
| 4K / 2160p | 2−3 | 1−2 |
| low / 720p | 14−16 | 14−16 |
| medium / 1080p | 6−7 | 6−7 |
| The average gaming FPS of GeForce 840A in Far Cry 5 is 16% more, than Radeon HD 8790M. | ||
| high / 1080p | 12−14 | 12−14 |
| ultra / 1080p | 7−8 | 7−8 |
| QHD / 1440p | − | 4−5 |
| low / 720p | 50−55 | 60−65 |
| medium / 1080p | 14−16 | 18−20 |
| The average gaming FPS of Radeon HD 8790M in Fortnite is 13% more, than GeForce 840A. | ||
| high / 1080p | 7−8 | 8−9 |
| ultra / 1080p | − | 7−8 |
| QHD / 1440p | 0−1 | 0−1 |
| low / 720p | 20−22 | 21−24 |
| medium / 1080p | 9−10 | 10−11 |
| The average gaming FPS of Radeon HD 8790M in Forza Horizon 4 is 8% more, than GeForce 840A. | ||
| low / 768p | 45−50 | 50−55 |
| high / 1080p | 8−9 | 10−11 |
| ultra / 1080p | 5−6 | 4−5 |
| QHD / 1440p | 0−1 | 0−1 |
| medium / 720p | 40−45 | 40−45 |
| The average gaming FPS of Radeon HD 8790M in Grand Theft Auto V is 3% more, than GeForce 840A. | ||
| high / 1080p | 3−4 | 2−3 |
| ultra / 1080p | 1−2 | 0−1 |
| 4K / 2160p | 0−1 | 0−1 |
| low / 720p | 8−9 | 9−10 |
| medium / 1080p | 4−5 | 4−5 |
| GeForce 840A and Radeon HD 8790M have the same average FPS in Metro Exodus. | ||
| low / 768p | 85−90 | 85−90 |
| high / 1080p | 85−90 | 70−75 |
| ultra / 1080p | 80−85 | − |
| medium / 1080p | 85−90 | − |
| The average gaming FPS of GeForce 840A in Minecraft is 8% more, than Radeon HD 8790M. | ||
| ultra / 1080p | 12−14 | 12−14 |
| low / 720p | 27−30 | 30−35 |
| medium / 1080p | 14−16 | 14−16 |
| The average gaming FPS of Radeon HD 8790M in PLAYERUNKNOWN'S BATTLEGROUNDS is 11% more, than GeForce 840A. | ||
| high / 1080p | − | 7−8 |
| ultra / 1080p | 7−8 | 4−5 |
| QHD / 1440p | 0−1 | 0−1 |
| low / 720p | 8−9 | 8−9 |
| medium / 1080p | − | 8−9 |
| The average gaming FPS of GeForce 840A in Red Dead Redemption 2 is 33% more, than Radeon HD 8790M. | ||
| low / 768p | 16−18 | 20−22 |
| medium / 768p | 12−14 | 12−14 |
| high / 1080p | 6−7 | 7−8 |
| ultra / 1080p | 5−6 | 5−6 |
| 4K / 2160p | − | 1−2 |
| The average gaming FPS of Radeon HD 8790M in The Witcher 3: Wild Hunt is 10% 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 | 30−35 |
| The average gaming FPS of Radeon HD 8790M in World of Tanks is 7% more, than GeForce 840A. | ||
Full Specs
| GeForce 840A | Radeon HD 8790M | |
| Architecture | Maxwell | GCN |
| Code name | GM108 | Mars XTX |
| Type | Desktop | Laptop |
| Release date | 17 March 2014 | 16 November 2012 |
| Pipelines | 384 | 384 |
| Core clock speed | 1029 MHz | 850 MHz |
| Boost Clock | 1124 MHz | 900 MHz |
| Transistor count | 950 million | |
| Manufacturing process technology | 28 nm | 28 nm |
| Texture fill rate | 17.98 | 21.60 |
| Floating-point performance | 863.2 gflops | 691.2 gflops |
| Memory bus width | 64 Bit | 128 Bit |
| Memory clock speed | 2002 MHz | 4500 MHz |
| Memory bandwidth | 16.02 GB/s | 64 GB/s |
| Shared memory | - | |
| DirectX | 12 (11_0) | 12 (11_1) |
| Shader Model | 5.1 | 5.1 |
| OpenGL | 4.6 | 4.6 |
| OpenCL | 1.2 | 1.2 |
| Vulkan | 1.1.126 | 1.2.131 |
| CUDA | 5.0 | |
| Bitcoin / BTC (SHA256) | 80 Mh/s | |
| Laptop size | medium sized | |
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