GeForce 840M vs GeForce 920MX
In this comparison between GeForce 840M and GeForce 920MX 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 840M will be the best choice, for others GeForce 920MX will be their preference. Study the comparison tables below and make your choice.
GeForce 840M and GeForce 920MX are Laptop Graphics Cards
Note: GeForce 840M and GeForce 920MX 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 GeForce 920MX here:
Main Specs
GeForce 840M
GeForce 920MX
Power consumption (TDP)
33 Watt
16 Watt
Interface
PCIe 3.0 x8
PCIe 3.0 x8
Supplementary power connectors
None
Memory type
DDR3
DDR3, GDDR5
Maximum RAM amount
4 GB
2 GB
Display Connectors
No outputs
No outputs
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GeForce 840M has 106% more power consumption, than GeForce 920MX.
Both video cards are using PCIe 3.0 x8 interface connection to a motherboard.
GeForce 840M has 2 GB more memory, than GeForce 920MX.
Both cards are used in Laptops.
GeForce 840M and GeForce 920MX are build with Maxwell architecture.
Core clock speed of GeForce 840M is 64 MHz higher, than GeForce 920MX.
GeForce 840M and GeForce 920MX are manufactured by 28 nm process technology.
Memory clock speed of GeForce 840M is 200 MHz higher, than GeForce 920MX.
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 GeForce 920MX have the same average FPS in Assassin's Creed Odyssey.
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 GeForce 920MX 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 GeForce 920MX have the same average FPS in Call of Duty: Warzone.
low / 768p
120−130
120−130
medium / 768p
90−95
95−100
ultra / 1080p
40−45
40−45
QHD / 1440p
24−27
24−27
4K / 2160p
18−20
18−20
high / 768p
65−70
70−75
The average gaming FPS of GeForce 920MX in Counter-Strike: Global Offensive is 1% more, than GeForce 840M.
low / 768p
85−90
85−90
ultra / 1080p
16−18
18−20
medium / 1080p
40−45
40−45
GeForce 840M and GeForce 920MX have the same average FPS in Cyberpunk 2077.
low / 768p
75−80
75−80
medium / 768p
50−55
50−55
ultra / 1080p
24−27
24−27
GeForce 840M and GeForce 920MX have the same average FPS in Dota 2.
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 GeForce 920MX 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
2−3
low / 720p
50−55
50−55
medium / 1080p
10−12
12−14
GeForce 840M and GeForce 920MX have the same average FPS in Fortnite.
high / 1080p
4−5
5−6
QHD / 1440p
0−1
0−1
low / 720p
16−18
18−20
medium / 1080p
7−8
7−8
The average gaming FPS of GeForce 920MX in Forza Horizon 4 is 11% more, than GeForce 840M.
low / 768p
45−50
45−50
high / 1080p
5−6
5−6
ultra / 1080p
2−3
2−3
QHD / 1440p
0−1
0−1
medium / 720p
35−40
35−40
GeForce 840M and GeForce 920MX have the same average FPS in Grand Theft Auto V.
high / 1080p
1−2
1−2
ultra / 1080p
0−1
0−1
4K / 2160p
0−1
0−1
low / 720p
5−6
6−7
medium / 1080p
3−4
3−4
GeForce 840M and GeForce 920MX have the same average FPS in Metro Exodus.
low / 768p
90−95
90−95
high / 1080p
85−90
85−90
ultra / 1080p
70−75
70−75
medium / 1080p
90−95
90−95
GeForce 840M and GeForce 920MX have the same average FPS in Minecraft.
ultra / 1080p
12−14
12−14
low / 720p
27−30
27−30
medium / 1080p
14−16
14−16
GeForce 840M and GeForce 920MX 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
6−7
GeForce 840M and GeForce 920MX have the same average FPS in Red Dead Redemption 2.
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 GeForce 920MX have the same average FPS in The Witcher 3: Wild Hunt.
low / 768p
75−80
75−80
medium / 768p
35−40
35−40
ultra / 1080p
16−18
16−18
high / 768p
30−35
30−35
GeForce 840M and GeForce 920MX have the same average FPS in World of Tanks.
Full Specs
GeForce 840M
GeForce 920MX
Architecture
Maxwell
Maxwell
Code name
N15S-GT
N16V-GMR
Type
Laptop
Laptop
Release date
12 March 2014
25 March 2015
Pipelines
384
256
Core clock speed
1029 MHz
965 MHz
Boost Clock
1124 MHz
993 MHz
Manufacturing process technology
28 nm
28 nm
Texture fill rate
17.98
23.83
Floating-point performance
863.2 gflops
602.1 gflops
Memory bus width
64 Bit
64 Bit
Memory clock speed
2000 MHz
1800 MHz
Memory bandwidth
16.02 GB/s
14.4 GB/s
Shared memory
-
-
DirectX
12 (11_0)
12 (11_0)
Shader Model
5.1
5.1
OpenGL
4.5
4.5
OpenCL
1.2
1.2
Vulkan
1.1.126
1.1.126
CUDA
+
+
Bus support
PCI Express 2.0, PCI Express 3.0
PCI Express 3.0
Bitcoin / BTC (SHA256)
92 Mh/s
Laptop size
medium sized
Optimus
+
+
GPU Boost
2.0
2.0
GameWorks
+
+
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