GeForce 840M vs UHD Graphics 620
When choosing between GeForce 840M 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 840M and UHD Graphics 620.
GeForce 840M and UHD Graphics 620 are Laptop Graphics Cards
Note: GeForce 840M and UHD Graphics 620 are only used in laptop graphics. They have 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 840M or UHD Graphics 620 here:
Main Specs
GeForce 840M
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
4 GB
32 GB
Display Connectors
No outputs
No outputs
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GeForce 840M has 120% more power consumption, than UHD Graphics 620.
GeForce 840M is connected by PCIe 3.0 x8, and UHD Graphics 620 uses PCIe 3.0 x1 interface.
UHD Graphics 620 has 28 GB more memory, than GeForce 840M.
Both cards are used in Laptops.
GeForce 840M is build with Maxwell architecture, and UHD Graphics 620 - with Gen. 9.5.
Core clock speed of GeForce 840M is 729 MHz higher, than UHD Graphics 620.
GeForce 840M is manufactured by 28 nm process technology, and UHD Graphics 620 - by 14 nm process technology.
Game benchmarks
Assassin's Creed Odyssey
Battlefield 5
Call of Duty: Warzone
Counter-Strike: Global Offensive
Cyberpunk 2077
Dota 2
Far Cry 5
Fortnite
Forza Horizon 4
Grand Theft Auto V
Metro Exodus
Minecraft
PLAYERUNKNOWN'S BATTLEGROUNDS
Red Dead Redemption 2
The Witcher 3: Wild Hunt
World of Tanks
high / 1080p
1−2
2−3
ultra / 1080p
0−1
0−1
QHD / 1440p
0−1
0−1
low / 720p
12−14
12−14
medium / 1080p
3−4
3−4
GeForce 840M and UHD Graphics 620 have the same average FPS in Assassin's Creed Odyssey.
high / 1080p
−
6−7
ultra / 1080p
4−5
4−5
QHD / 1440p
0−1
0−1
low / 720p
16−18
16−18
medium / 1080p
5−6
6−7
GeForce 840M and UHD Graphics 620 have the same average FPS in Battlefield 5.
low / 768p
45−50
45−50
high / 1080p
40−45
40−45
QHD / 1440p
0−1
0−1
GeForce 840M and UHD Graphics 620 have the same average FPS in Call of Duty: Warzone.
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 840M in Counter-Strike: Global Offensive is 12% more, than UHD Graphics 620.
low / 768p
85−90
85−90
ultra / 1080p
16−18
18−20
medium / 1080p
40−45
40−45
GeForce 840M and UHD Graphics 620 have the same average FPS in Cyberpunk 2077.
low / 768p
75−80
80−85
medium / 768p
50−55
55−60
ultra / 1080p
24−27
27−30
The average gaming FPS of UHD Graphics 620 in Dota 2 is 9% more, than GeForce 840M.
high / 1080p
2−3
2−3
ultra / 1080p
2−3
2−3
4K / 2160p
0−1
1−2
low / 720p
12−14
12−14
medium / 1080p
3−4
3−4
GeForce 840M and UHD Graphics 620 have the same average FPS in Far Cry 5.
high / 1080p
10−11
10−11
ultra / 1080p
5−6
5−6
QHD / 1440p
2−3
1−2
low / 720p
50−55
50−55
medium / 1080p
10−12
12−14
GeForce 840M and UHD Graphics 620 have the same average FPS in Fortnite.
high / 1080p
4−5
5−6
QHD / 1440p
0−1
3−4
4K / 2160p
−
2−3
low / 720p
16−18
16−18
medium / 1080p
7−8
8−9
The average gaming FPS of UHD Graphics 620 in Forza Horizon 4 is 11% more, than GeForce 840M.
low / 768p
45−50
40−45
medium / 768p
−
35−40
high / 1080p
5−6
5−6
ultra / 1080p
2−3
3−4
QHD / 1440p
0−1
0−1
medium / 720p
35−40
−
The average gaming FPS of GeForce 840M in Grand Theft Auto V is 5% more, than UHD Graphics 620.
high / 1080p
1−2
1−2
ultra / 1080p
0−1
0−1
4K / 2160p
0−1
−
low / 720p
5−6
5−6
medium / 1080p
3−4
3−4
GeForce 840M and UHD Graphics 620 have the same average FPS in Metro Exodus.
low / 768p
90−95
95−100
high / 1080p
85−90
60−65
ultra / 1080p
70−75
−
medium / 1080p
90−95
85−90
The average gaming FPS of GeForce 840M in Minecraft is 9% more, than UHD Graphics 620.
ultra / 1080p
12−14
12−14
low / 720p
27−30
27−30
medium / 1080p
14−16
14−16
GeForce 840M and UHD Graphics 620 have the same average FPS in PLAYERUNKNOWN'S BATTLEGROUNDS.
ultra / 1080p
4−5
4−5
QHD / 1440p
0−1
0−1
low / 720p
6−7
4−5
The average gaming FPS of GeForce 840M in Red Dead Redemption 2 is 25% more, than UHD Graphics 620.
low / 768p
12−14
12−14
medium / 768p
9−10
9−10
high / 1080p
4−5
4−5
ultra / 1080p
3−4
3−4
4K / 2160p
0−1
0−1
GeForce 840M and UHD Graphics 620 have the same average FPS in The Witcher 3: Wild Hunt.
low / 768p
75−80
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 840M in World of Tanks is 10% more, than UHD Graphics 620.
Full Specs
GeForce 840M
UHD Graphics 620
Architecture
Maxwell
Gen. 9.5
Code name
N15S-GT
Kaby-Lake-Refresh GT2
Type
Laptop
Laptop
Release date
12 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
2000 MHz
Memory bandwidth
16.02 GB/s
Shared memory
-
+
DirectX
12 (11_0)
12 (12_1)
Shader Model
5.1
6.4
OpenGL
4.5
4.6
OpenCL
1.2
2.1
Vulkan
1.1.126
1.1.103
CUDA
+
Bus support
PCI Express 2.0, PCI Express 3.0
Bitcoin / BTC (SHA256)
92 Mh/s
Laptop size
medium sized
Optimus
+
Quick Sync
+
GPU Boost
2.0
GameWorks
+
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