GeForce 840A vs UHD Graphics 620
When choosing between GeForce 840A and UHD Graphics 620, it is worth examining the specifications of the models in detail. Do they meet the recommended requirements of modern games and software? Storage capacity, form factor, TDP, available ports, warranty and manufacturer support are all important. For example, the size of a PC case can limit the maximum thickness and length of the card. Often, instead of the factory overclocked card and RGB backlight, it is better to choose a reference model with a more efficient GPU. And make sure that your current power supply unit has the correct connection pins (using adapters is not recommended). This GPUs compare tool is meant to help you to choose the best graphics card for your build. Let's find out the difference between GeForce 840A and UHD Graphics 620.
GeForce 840A
UHD Graphics 620 is a Laptop Graphics Card
Note: UHD Graphics 620 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 UHD Graphics 620 here:
Main Specs
| GeForce 840A | UHD Graphics 620 | |
| Power consumption (TDP) | 33 Watt | 15 Watt |
| Interface | PCIe 3.0 x8 | PCIe 3.0 x1 |
| Memory type | DDR3 | LPDDR3/DDR4 |
| Maximum RAM amount | 2 GB | 32 GB |
| Display Connectors | No outputs | No outputs |
| Check Price |
- GeForce 840A has 120% more power consumption, than UHD Graphics 620.
- GeForce 840A is connected by PCIe 3.0 x8, and UHD Graphics 620 uses PCIe 3.0 x1 interface.
- UHD Graphics 620 has 30 GB more memory, than GeForce 840A.
- GeForce 840A is used in Desktops, and UHD Graphics 620 - in Laptops.
- GeForce 840A is build with Maxwell architecture, and UHD Graphics 620 - with Gen. 9.5.
- Core clock speed of GeForce 840A is 729 MHz higher, than UHD Graphics 620.
- GeForce 840A is manufactured by 28 nm process technology, and UHD Graphics 620 - by 14 nm process technology.
Game benchmarks
| high / 1080p | 3−4 | 2−3 |
| ultra / 1080p | 2−3 | 0−1 |
| QHD / 1440p | 0−1 | 0−1 |
| low / 720p | 14−16 | 12−14 |
| medium / 1080p | 5−6 | 3−4 |
| The average gaming FPS of GeForce 840A in Assassin's Creed Odyssey is 33% more, than UHD Graphics 620. | ||
| high / 1080p | − | 6−7 |
| ultra / 1080p | 7−8 | 4−5 |
| QHD / 1440p | 0−1 | 0−1 |
| low / 720p | 18−20 | 16−18 |
| medium / 1080p | 8−9 | 6−7 |
| The average gaming FPS of GeForce 840A in Battlefield 5 is 22% more, than UHD Graphics 620. | ||
| low / 768p | 45−50 | 45−50 |
| high / 1080p | 30−35 | 40−45 |
| QHD / 1440p | 0−1 | 0−1 |
| The average gaming FPS of UHD Graphics 620 in Call of Duty: Warzone is 12% more, than GeForce 840A. | ||
| low / 768p | 120−130 | 100−110 |
| medium / 768p | 90−95 | 80−85 |
| ultra / 1080p | 40−45 | 40−45 |
| QHD / 1440p | 24−27 | 21−24 |
| 4K / 2160p | 18−20 | 16−18 |
| high / 768p | 65−70 | 60−65 |
| The average gaming FPS of GeForce 840A in Counter-Strike: Global Offensive is 12% more, than UHD Graphics 620. | ||
| low / 768p | 80−85 | 85−90 |
| ultra / 1080p | 14−16 | 18−20 |
| medium / 1080p | 40−45 | 40−45 |
| The average gaming FPS of UHD Graphics 620 in Cyberpunk 2077 is 6% more, than GeForce 840A. | ||
| low / 768p | 75−80 | 80−85 |
| medium / 768p | 50−55 | 55−60 |
| ultra / 1080p | 27−30 | 27−30 |
| The average gaming FPS of UHD Graphics 620 in Dota 2 is 7% more, than GeForce 840A. | ||
| high / 1080p | 5−6 | 2−3 |
| ultra / 1080p | − | 2−3 |
| 4K / 2160p | 2−3 | 1−2 |
| low / 720p | 14−16 | 12−14 |
| medium / 1080p | 6−7 | 3−4 |
| The average gaming FPS of GeForce 840A in Far Cry 5 is 40% more, than UHD Graphics 620. | ||
| high / 1080p | 12−14 | 10−11 |
| ultra / 1080p | 7−8 | 5−6 |
| QHD / 1440p | − | 1−2 |
| low / 720p | 50−55 | 50−55 |
| medium / 1080p | 14−16 | 12−14 |
| The average gaming FPS of GeForce 840A in Fortnite is 10% more, than UHD Graphics 620. | ||
| high / 1080p | 7−8 | 5−6 |
| QHD / 1440p | 0−1 | 3−4 |
| 4K / 2160p | − | 2−3 |
| low / 720p | 20−22 | 16−18 |
| medium / 1080p | 9−10 | 8−9 |
| The average gaming FPS of GeForce 840A in Forza Horizon 4 is 20% more, than UHD Graphics 620. | ||
| low / 768p | 45−50 | 40−45 |
| medium / 768p | − | 35−40 |
| high / 1080p | 8−9 | 5−6 |
| ultra / 1080p | 5−6 | 3−4 |
| QHD / 1440p | 0−1 | 0−1 |
| medium / 720p | 40−45 | − |
| The average gaming FPS of GeForce 840A in Grand Theft Auto V is 17% more, than UHD Graphics 620. | ||
| high / 1080p | 3−4 | 1−2 |
| ultra / 1080p | 1−2 | 0−1 |
| 4K / 2160p | 0−1 | − |
| low / 720p | 8−9 | 5−6 |
| medium / 1080p | 4−5 | 3−4 |
| The average gaming FPS of GeForce 840A in Metro Exodus is 66% more, than UHD Graphics 620. | ||
| low / 768p | 85−90 | 95−100 |
| high / 1080p | 85−90 | 60−65 |
| ultra / 1080p | 80−85 | − |
| medium / 1080p | 85−90 | 85−90 |
| The average gaming FPS of GeForce 840A in Minecraft is 6% more, than UHD Graphics 620. | ||
| ultra / 1080p | 12−14 | 12−14 |
| low / 720p | 27−30 | 27−30 |
| medium / 1080p | 14−16 | 14−16 |
| GeForce 840A and UHD Graphics 620 have the same average FPS in PLAYERUNKNOWN'S BATTLEGROUNDS. | ||
| ultra / 1080p | 7−8 | 4−5 |
| QHD / 1440p | 0−1 | 0−1 |
| low / 720p | 8−9 | 4−5 |
| The average gaming FPS of GeForce 840A in Red Dead Redemption 2 is 100% more, than UHD Graphics 620. | ||
| low / 768p | 16−18 | 12−14 |
| medium / 768p | 12−14 | 9−10 |
| high / 1080p | 6−7 | 4−5 |
| ultra / 1080p | 5−6 | 3−4 |
| 4K / 2160p | − | 0−1 |
| The average gaming FPS of GeForce 840A in The Witcher 3: Wild Hunt is 42% more, than UHD Graphics 620. | ||
| low / 768p | 70−75 | 65−70 |
| medium / 768p | 35−40 | 35−40 |
| ultra / 1080p | 16−18 | 14−16 |
| high / 768p | 30−35 | 27−30 |
| The average gaming FPS of GeForce 840A in World of Tanks is 5% more, than UHD Graphics 620. | ||
Full Specs
| GeForce 840A | UHD Graphics 620 | |
| Architecture | Maxwell | Gen. 9.5 |
| Code name | GM108 | Kaby-Lake-Refresh GT2 |
| Type | Desktop | Laptop |
| Release date | 17 March 2014 | 1 September 2017 |
| Pipelines | 384 | 24 |
| Core clock speed | 1029 MHz | 300 MHz |
| Boost Clock | 1124 MHz | 1150 MHz |
| Transistor count | 189 million | |
| Manufacturing process technology | 28 nm | 14 nm |
| Texture fill rate | 17.98 | 27.60 |
| Floating-point performance | 863.2 gflops | |
| Memory bus width | 64 Bit | 64/128 Bit |
| Memory clock speed | 2002 MHz | |
| Memory bandwidth | 16.02 GB/s | |
| Shared memory | + | |
| DirectX | 12 (11_0) | 12 (12_1) |
| Shader Model | 5.1 | 6.4 |
| OpenGL | 4.6 | 4.6 |
| OpenCL | 1.2 | 2.1 |
| Vulkan | 1.1.126 | 1.1.103 |
| CUDA | 5.0 | |
| Quick Sync | + | |
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