GeForce 840M vs Iris Plus Graphics 655
When choosing between GeForce 840M and Iris Plus Graphics 655, 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 Iris Plus Graphics 655.
GeForce 840M and Iris Plus Graphics 655 are Laptop Graphics Cards
Note: GeForce 840M and Iris Plus Graphics 655 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 Iris Plus Graphics 655 here:
Main Specs
GeForce 840M
Iris Plus Graphics 655
Power consumption (TDP)
33 Watt
15 Watt
Interface
PCIe 3.0 x8
PCIe 3.0 x1
Memory type
DDR3
DDR3/DDR4
Maximum RAM amount
4 GB
Display Connectors
No outputs
No outputs
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GeForce 840M has 120% more power consumption, than Iris Plus Graphics 655.
GeForce 840M is connected by PCIe 3.0 x8, and Iris Plus Graphics 655 uses PCIe 3.0 x1 interface.
Both cards are used in Laptops.
GeForce 840M is build with Maxwell architecture, and Iris Plus Graphics 655 - with Gen. 9.5 Kaby Lake.
Core clock speed of GeForce 840M is 729 MHz higher, than Iris Plus Graphics 655.
GeForce 840M is manufactured by 28 nm process technology, and Iris Plus Graphics 655 - 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
12−14
ultra / 1080p
0−1
7−8
QHD / 1440p
0−1
2−3
low / 720p
12−14
27−30
medium / 1080p
3−4
16−18
The average gaming FPS of Iris Plus Graphics 655 in Assassin's Creed Odyssey is 216% more, than GeForce 840M.
high / 1080p
−
21−24
ultra / 1080p
4−5
18−20
QHD / 1440p
0−1
4−5
low / 720p
16−18
45−50
medium / 1080p
5−6
21−24
The average gaming FPS of Iris Plus Graphics 655 in Battlefield 5 is 222% more, than GeForce 840M.
low / 768p
45−50
45−50
high / 1080p
40−45
−
QHD / 1440p
0−1
0−1
GeForce 840M and Iris Plus Graphics 655 have the same average FPS in Call of Duty: Warzone.
low / 768p
120−130
190−200
medium / 768p
90−95
160−170
ultra / 1080p
40−45
85−90
QHD / 1440p
24−27
45−50
4K / 2160p
18−20
30−33
high / 768p
65−70
120−130
The average gaming FPS of Iris Plus Graphics 655 in Counter-Strike: Global Offensive is 74% more, than GeForce 840M.
low / 768p
85−90
55−60
ultra / 1080p
16−18
35−40
medium / 1080p
40−45
45−50
The average gaming FPS of GeForce 840M in Cyberpunk 2077 is 4% more, than Iris Plus Graphics 655.
low / 768p
75−80
100−110
medium / 768p
50−55
85−90
ultra / 1080p
24−27
55−60
The average gaming FPS of Iris Plus Graphics 655 in Dota 2 is 62% more, than GeForce 840M.
high / 1080p
2−3
14−16
ultra / 1080p
2−3
14−16
4K / 2160p
0−1
5−6
low / 720p
12−14
30−35
medium / 1080p
3−4
16−18
The average gaming FPS of Iris Plus Graphics 655 in Far Cry 5 is 280% more, than GeForce 840M.
high / 1080p
10−11
21−24
ultra / 1080p
5−6
16−18
QHD / 1440p
2−3
16−18
low / 720p
50−55
85−90
medium / 1080p
10−12
45−50
The average gaming FPS of Iris Plus Graphics 655 in Fortnite is 137% more, than GeForce 840M.
high / 1080p
4−5
21−24
ultra / 1080p
−
16−18
QHD / 1440p
0−1
7−8
low / 720p
16−18
45−50
medium / 1080p
7−8
24−27
The average gaming FPS of Iris Plus Graphics 655 in Forza Horizon 4 is 244% more, than GeForce 840M.
low / 768p
45−50
75−80
medium / 768p
−
65−70
high / 1080p
5−6
24−27
ultra / 1080p
2−3
10−11
QHD / 1440p
0−1
1−2
medium / 720p
35−40
−
The average gaming FPS of Iris Plus Graphics 655 in Grand Theft Auto V is 105% more, than GeForce 840M.
high / 1080p
1−2
8−9
ultra / 1080p
0−1
6−7
4K / 2160p
0−1
2−3
low / 720p
5−6
24−27
medium / 1080p
3−4
10−12
The average gaming FPS of Iris Plus Graphics 655 in Metro Exodus is 400% more, than GeForce 840M.
low / 768p
90−95
100−110
high / 1080p
85−90
−
ultra / 1080p
70−75
95−100
medium / 1080p
90−95
100−110
The average gaming FPS of Iris Plus Graphics 655 in Minecraft is 20% more, than GeForce 840M.
high / 1080p
−
21−24
ultra / 1080p
12−14
16−18
low / 720p
27−30
50−55
medium / 1080p
14−16
21−24
The average gaming FPS of Iris Plus Graphics 655 in PLAYERUNKNOWN'S BATTLEGROUNDS is 66% more, than GeForce 840M.
high / 1080p
−
12−14
ultra / 1080p
4−5
9−10
QHD / 1440p
0−1
0−1
low / 720p
6−7
24−27
medium / 1080p
−
14−16
The average gaming FPS of Iris Plus Graphics 655 in Red Dead Redemption 2 is 240% more, than GeForce 840M.
low / 768p
12−14
45−50
medium / 768p
9−10
27−30
high / 1080p
4−5
16−18
ultra / 1080p
3−4
9−10
4K / 2160p
0−1
7−8
The average gaming FPS of Iris Plus Graphics 655 in The Witcher 3: Wild Hunt is 257% more, than GeForce 840M.
low / 768p
75−80
95−100
medium / 768p
35−40
55−60
ultra / 1080p
16−18
30−35
high / 768p
30−35
50−55
The average gaming FPS of Iris Plus Graphics 655 in World of Tanks is 46% more, than GeForce 840M.
Full Specs
GeForce 840M
Iris Plus Graphics 655
Architecture
Maxwell
Gen. 9.5 Kaby Lake
Code name
N15S-GT
Kaby Lake GT3e
Type
Laptop
Laptop
Release date
12 March 2014
1 September 2017
Pipelines
384
48
Core clock speed
1029 MHz
300 MHz
Boost Clock
1124 MHz
1200 MHz
Transistor count
189 million
Manufacturing process technology
28 nm
14 nm
Texture fill rate
17.98
50.40
Floating-point performance
863.2 gflops
Memory bus width
64 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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