GeForce 940MX vs Iris Plus Graphics 640
When comparing GeForce 940MX and Iris Plus Graphics 640, we look primarily at benchmarks and game tests. But it is not only about the numbers. Often you can find third-party models with higher clock speeds, better cooling, or a customizable RGB lighting. Not all of them will have all the features you need. Another thing to consider is the port selection. Most graphics cards have at least one DisplayPort and HDMI interface, but some monitors require DVI. Before you buy, check the TDP of the graphics card - this characteristic will help you estimate the consumption of the graphics card. You may even have to upgrade your PSU to meet its requirements. An important factor when choosing between GeForce 940MX and Iris Plus Graphics 640 is the price. Does the additional cost justify the performance hit? Our comparison should help you make the right decision.
GeForce 940MX and Iris Plus Graphics 640 are Laptop Graphics Cards
Note: GeForce 940MX 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 940MX or Iris Plus Graphics 640 here:
Main Specs
GeForce 940MX
Iris Plus Graphics 640
Power consumption (TDP)
23 Watt
15 Watt
Interface
PCIe 3.0 x8
PCIe 3.0 x1
Supplementary power connectors
None
Memory type
DDR3, GDDR5
DDR3L/LPDDR3/DDR4
Maximum RAM amount
4 GB
32 GB
Display Connectors
No outputs
No outputs
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GeForce 940MX has 53% more power consumption, than Iris Plus Graphics 640.
GeForce 940MX 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 940MX.
Both cards are used in Laptops.
GeForce 940MX is build with Maxwell architecture, and Iris Plus Graphics 640 - with Gen. 9.5 Kaby Lake.
Core clock speed of GeForce 940MX is 822 MHz higher, than Iris Plus Graphics 640.
GeForce 940MX 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
7−8
6−7
ultra / 1080p
4−5
4−5
QHD / 1440p
0−1
0−1
low / 720p
16−18
16−18
medium / 1080p
8−9
8−9
GeForce 940MX and Iris Plus Graphics 640 have the same average FPS in Assassin's Creed Odyssey.
high / 1080p
12−14
12−14
ultra / 1080p
10−11
10−11
QHD / 1440p
0−1
0−1
low / 720p
24−27
24−27
medium / 1080p
12−14
12−14
GeForce 940MX and Iris Plus Graphics 640 have the same average FPS in Battlefield 5.
low / 768p
45−50
45−50
high / 1080p
45−50
45−50
QHD / 1440p
0−1
0−1
GeForce 940MX and Iris Plus Graphics 640 have the same average FPS in Call of Duty: Warzone.
low / 768p
140−150
130−140
medium / 768p
110−120
110−120
ultra / 1080p
55−60
50−55
QHD / 1440p
30−33
27−30
4K / 2160p
27−30
27−30
high / 768p
80−85
80−85
The average gaming FPS of GeForce 940MX in Counter-Strike: Global Offensive is 4% more, than Iris Plus Graphics 640.
low / 768p
55−60
55−60
ultra / 1080p
20−22
18−20
medium / 1080p
45−50
45−50
The average gaming FPS of GeForce 940MX in Cyberpunk 2077 is 2% more, than Iris Plus Graphics 640.
low / 768p
80−85
80−85
medium / 768p
60−65
55−60
ultra / 1080p
35−40
30−35
The average gaming FPS of GeForce 940MX in Dota 2 is 5% more, than Iris Plus Graphics 640.
high / 1080p
8−9
8−9
ultra / 1080p
8−9
7−8
4K / 2160p
3−4
3−4
low / 720p
18−20
18−20
medium / 1080p
9−10
8−9
GeForce 940MX and Iris Plus Graphics 640 have the same average FPS in Far Cry 5.
high / 1080p
14−16
14−16
ultra / 1080p
10−11
10−11
low / 720p
60−65
60−65
medium / 1080p
24−27
21−24
The average gaming FPS of GeForce 940MX in Fortnite is 3% more, than Iris Plus Graphics 640.
high / 1080p
12−14
12−14
ultra / 1080p
10−12
10−12
QHD / 1440p
1−2
1−2
low / 720p
27−30
24−27
medium / 1080p
14−16
14−16
GeForce 940MX and Iris Plus Graphics 640 have the same average FPS in Forza Horizon 4.
low / 768p
50−55
50−55
medium / 768p
45−50
45−50
high / 1080p
12−14
12−14
ultra / 1080p
6−7
6−7
QHD / 1440p
0−1
0−1
GeForce 940MX and Iris Plus Graphics 640 have the same average FPS in Grand Theft Auto V.
high / 1080p
5−6
4−5
ultra / 1080p
3−4
3−4
4K / 2160p
0−1
0−1
low / 720p
12−14
12−14
medium / 1080p
6−7
6−7
The average gaming FPS of GeForce 940MX in Metro Exodus is 16% more, than Iris Plus Graphics 640.
low / 768p
95−100
95−100
high / 1080p
90−95
90−95
ultra / 1080p
80−85
80−85
medium / 1080p
90−95
90−95
GeForce 940MX and Iris Plus Graphics 640 have the same average FPS in Minecraft.
high / 1080p
16−18
16−18
ultra / 1080p
14−16
14−16
low / 720p
30−35
30−35
medium / 1080p
18−20
18−20
GeForce 940MX and Iris Plus Graphics 640 have the same average FPS in PLAYERUNKNOWN'S BATTLEGROUNDS.
ultra / 1080p
7−8
7−8
QHD / 1440p
0−1
0−1
low / 720p
12−14
12−14
medium / 1080p
10−12
10−12
GeForce 940MX and Iris Plus Graphics 640 have the same average FPS in Red Dead Redemption 2.
low / 768p
24−27
24−27
medium / 768p
16−18
16−18
high / 1080p
9−10
9−10
ultra / 1080p
6−7
6−7
4K / 2160p
6−7
6−7
GeForce 940MX and Iris Plus Graphics 640 have the same average FPS in The Witcher 3: Wild Hunt.
low / 768p
85−90
85−90
medium / 768p
45−50
45−50
ultra / 1080p
20−22
18−20
high / 768p
35−40
35−40
The average gaming FPS of GeForce 940MX in World of Tanks is 2% more, than Iris Plus Graphics 640.
Full Specs
GeForce 940MX
Iris Plus Graphics 640
Architecture
Maxwell
Gen. 9.5 Kaby Lake
Code name
N16S-GTR-B/S
Kaby Lake GT3e
Type
Laptop
Laptop
Release date
10 March 2016
3 January 2017
Pipelines
384
48
Core clock speed
1122 MHz
300 MHz
Boost Clock
1242 MHz
1050 MHz
Transistor count
1,870 million
189 million
Manufacturing process technology
28 nm
14 nm
Texture fill rate
23.83
52.80
Floating-point performance
762.6 gflops
Memory bus width
64 Bit
64/128 Bit
Memory clock speed
4000 MHz
Memory bandwidth
40.1 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
1.1.103
CUDA
+
Bus support
PCI Express 3.0
Bitcoin / BTC (SHA256)
102 Mh/s
Laptop size
medium sized
Optimus
+
Quick Sync
+
GPU Boost
2.0
GameWorks
+
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