GeForce 840M vs Iris Plus Graphics 640
Find out if it is worth upgrading your current GPU setup by comparing GeForce 840M and Iris Plus Graphics 640. Here you can take a closer look at graphics cards specs, such as core clock speed, memory type and size, display connectors, etc. The price, overall benchmark and gaming performances are usually defining factors when it comes to choosing between GeForce 840M and Iris Plus Graphics 640. Make sure that the graphics card has compatible dimensions and will properly fit in your new or current computer case. Also these graphics cards may have different system power recommendations, so take that into consideration and upgrade your PSU if necessary.
GeForce 840M and Iris Plus Graphics 640 are Laptop Graphics Cards
Note: GeForce 840M and Iris Plus Graphics 640 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 640 here:
Main Specs
GeForce 840M
Iris Plus Graphics 640
Power consumption (TDP)
33 Watt
15 Watt
Interface
PCIe 3.0 x8
PCIe 3.0 x1
Memory type
DDR3
DDR3L/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 Iris Plus Graphics 640.
GeForce 840M is connected by PCIe 3.0 x8, and Iris Plus Graphics 640 uses PCIe 3.0 x1 interface.
Iris Plus Graphics 640 has 28 GB more memory, than GeForce 840M.
Both cards are used in Laptops.
GeForce 840M is build with Maxwell architecture, and Iris Plus Graphics 640 - with Gen. 9.5 Kaby Lake.
Core clock speed of GeForce 840M is 729 MHz higher, than Iris Plus Graphics 640.
GeForce 840M is manufactured by 28 nm process technology, and Iris Plus Graphics 640 - 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
6−7
ultra / 1080p
0−1
4−5
QHD / 1440p
0−1
0−1
low / 720p
12−14
16−18
medium / 1080p
3−4
8−9
The average gaming FPS of Iris Plus Graphics 640 in Assassin's Creed Odyssey is 66% more, than GeForce 840M.
high / 1080p
−
12−14
ultra / 1080p
4−5
10−11
QHD / 1440p
0−1
0−1
low / 720p
16−18
24−27
medium / 1080p
5−6
12−14
The average gaming FPS of Iris Plus Graphics 640 in Battlefield 5 is 77% more, than GeForce 840M.
low / 768p
45−50
45−50
high / 1080p
40−45
45−50
QHD / 1440p
0−1
0−1
The average gaming FPS of Iris Plus Graphics 640 in Call of Duty: Warzone is 4% more, than GeForce 840M.
low / 768p
120−130
130−140
medium / 768p
90−95
110−120
ultra / 1080p
40−45
50−55
QHD / 1440p
24−27
27−30
4K / 2160p
18−20
27−30
high / 768p
65−70
80−85
The average gaming FPS of Iris Plus Graphics 640 in Counter-Strike: Global Offensive is 17% more, than GeForce 840M.
low / 768p
85−90
55−60
ultra / 1080p
16−18
18−20
medium / 1080p
40−45
45−50
The average gaming FPS of GeForce 840M in Cyberpunk 2077 is 19% more, than Iris Plus Graphics 640.
low / 768p
75−80
80−85
medium / 768p
50−55
55−60
ultra / 1080p
24−27
30−35
The average gaming FPS of Iris Plus Graphics 640 in Dota 2 is 11% more, than GeForce 840M.
high / 1080p
2−3
8−9
ultra / 1080p
2−3
7−8
4K / 2160p
0−1
3−4
low / 720p
12−14
18−20
medium / 1080p
3−4
8−9
The average gaming FPS of Iris Plus Graphics 640 in Far Cry 5 is 100% more, than GeForce 840M.
high / 1080p
10−11
14−16
ultra / 1080p
5−6
10−11
QHD / 1440p
2−3
−
low / 720p
50−55
60−65
medium / 1080p
10−12
21−24
The average gaming FPS of Iris Plus Graphics 640 in Fortnite is 42% more, than GeForce 840M.
high / 1080p
4−5
12−14
ultra / 1080p
−
10−12
QHD / 1440p
0−1
1−2
low / 720p
16−18
24−27
medium / 1080p
7−8
14−16
The average gaming FPS of Iris Plus Graphics 640 in Forza Horizon 4 is 88% more, than GeForce 840M.
low / 768p
45−50
50−55
medium / 768p
−
45−50
high / 1080p
5−6
12−14
ultra / 1080p
2−3
6−7
QHD / 1440p
0−1
0−1
medium / 720p
35−40
−
The average gaming FPS of Iris Plus Graphics 640 in Grand Theft Auto V is 33% more, than GeForce 840M.
high / 1080p
1−2
4−5
ultra / 1080p
0−1
3−4
4K / 2160p
0−1
0−1
low / 720p
5−6
12−14
medium / 1080p
3−4
6−7
The average gaming FPS of Iris Plus Graphics 640 in Metro Exodus is 166% more, than GeForce 840M.
low / 768p
90−95
95−100
high / 1080p
85−90
90−95
ultra / 1080p
70−75
80−85
medium / 1080p
90−95
90−95
The average gaming FPS of Iris Plus Graphics 640 in Minecraft is 5% more, than GeForce 840M.
high / 1080p
−
16−18
ultra / 1080p
12−14
14−16
low / 720p
27−30
30−35
medium / 1080p
14−16
18−20
The average gaming FPS of Iris Plus Graphics 640 in PLAYERUNKNOWN'S BATTLEGROUNDS is 22% more, than GeForce 840M.
ultra / 1080p
4−5
7−8
QHD / 1440p
0−1
0−1
low / 720p
6−7
12−14
medium / 1080p
−
10−12
The average gaming FPS of Iris Plus Graphics 640 in Red Dead Redemption 2 is 100% more, than GeForce 840M.
low / 768p
12−14
24−27
medium / 768p
9−10
16−18
high / 1080p
4−5
9−10
ultra / 1080p
3−4
6−7
4K / 2160p
0−1
6−7
The average gaming FPS of Iris Plus Graphics 640 in The Witcher 3: Wild Hunt is 100% more, than GeForce 840M.
low / 768p
75−80
85−90
medium / 768p
35−40
45−50
ultra / 1080p
16−18
18−20
high / 768p
30−35
35−40
The average gaming FPS of Iris Plus Graphics 640 in World of Tanks is 14% more, than GeForce 840M.
Full Specs
GeForce 840M
Iris Plus Graphics 640
Architecture
Maxwell
Gen. 9.5 Kaby Lake
Code name
N15S-GT
Kaby Lake GT3e
Type
Laptop
Laptop
Release date
12 March 2014
3 January 2017
Pipelines
384
48
Core clock speed
1029 MHz
300 MHz
Boost Clock
1124 MHz
1050 MHz
Transistor count
189 million
Manufacturing process technology
28 nm
14 nm
Texture fill rate
17.98
52.80
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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