Iris Plus Graphics 640 vs Maxwell GPU Surface Book 940M GDDR5
If you are going to buy a new graphics card and are choosing between Iris Plus Graphics 640 and Maxwell GPU Surface Book 940M GDDR5, there are a couple of things to consider. Cards with more VRAM in general perform better and allow you to play on higher graphics settings. Size also makes a difference. A model with a large heatsink can occupy up to three expansion slots on a motherboard. Be sure you have enough room in your PC case. When comparing GPUs with different architectures, more processing cores and even higher TFLOPS will not always translate to better performance. To help you decide which GPU you need, we have measured frame rates in a number of popular games. For more on how the Iris Plus Graphics 640 stacks up against Maxwell GPU Surface Book 940M GDDR5, check out specs charts below.
Iris Plus Graphics 640 and Maxwell GPU Surface Book 940M GDDR5 are Laptop Graphics Cards
Note: Iris Plus Graphics 640 and Maxwell GPU Surface Book 940M GDDR5 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 Iris Plus Graphics 640 or Maxwell GPU Surface Book 940M GDDR5 here:
Main Specs
Iris Plus Graphics 640
Maxwell GPU Surface Book 940M GDDR5
Power consumption (TDP)
15 Watt
Interface
PCIe 3.0 x1
Memory type
DDR3L/LPDDR3/DDR4
GDDR5
Maximum RAM amount
32 GB
1 GB
Display Connectors
No outputs
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Iris Plus Graphics 640 has 31 GB more memory, than Maxwell GPU Surface Book 940M GDDR5.
Both cards are used in Laptops.
Iris Plus Graphics 640 is build with Gen. 9.5 Kaby Lake architecture, and Maxwell GPU Surface Book 940M GDDR5 - with Maxwell.
Core clock speed of Maxwell GPU Surface Book 940M GDDR5 is 654 MHz higher, than Iris Plus Graphics 640.
Iris Plus Graphics 640 is manufactured by 14 nm process technology, and Maxwell GPU Surface Book 940M GDDR5 - by 28 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
6−7
9−10
ultra / 1080p
4−5
5−6
QHD / 1440p
0−1
0−1
low / 720p
16−18
21−24
medium / 1080p
8−9
12−14
The average gaming FPS of Maxwell GPU Surface Book 940M GDDR5 in Assassin's Creed Odyssey is 33% more, than Iris Plus Graphics 640.
high / 1080p
12−14
16−18
ultra / 1080p
10−11
14−16
QHD / 1440p
0−1
0−1
low / 720p
24−27
30−35
medium / 1080p
12−14
16−18
The average gaming FPS of Maxwell GPU Surface Book 940M GDDR5 in Battlefield 5 is 33% more, than Iris Plus Graphics 640.
low / 768p
45−50
45−50
high / 1080p
45−50
−
QHD / 1440p
0−1
0−1
Iris Plus Graphics 640 and Maxwell GPU Surface Book 940M GDDR5 have the same average FPS in Call of Duty: Warzone.
low / 768p
130−140
160−170
medium / 768p
110−120
130−140
ultra / 1080p
50−55
70−75
QHD / 1440p
27−30
40−45
4K / 2160p
27−30
30−33
high / 768p
80−85
100−110
The average gaming FPS of Maxwell GPU Surface Book 940M GDDR5 in Counter-Strike: Global Offensive is 24% more, than Iris Plus Graphics 640.
low / 768p
55−60
55−60
ultra / 1080p
18−20
27−30
medium / 1080p
45−50
45−50
The average gaming FPS of Maxwell GPU Surface Book 940M GDDR5 in Cyberpunk 2077 is 7% more, than Iris Plus Graphics 640.
low / 768p
80−85
90−95
medium / 768p
55−60
70−75
ultra / 1080p
30−35
45−50
The average gaming FPS of Maxwell GPU Surface Book 940M GDDR5 in Dota 2 is 22% more, than Iris Plus Graphics 640.
high / 1080p
8−9
10−12
ultra / 1080p
7−8
10−11
4K / 2160p
3−4
4−5
low / 720p
18−20
24−27
medium / 1080p
8−9
12−14
The average gaming FPS of Maxwell GPU Surface Book 940M GDDR5 in Far Cry 5 is 33% more, than Iris Plus Graphics 640.
high / 1080p
14−16
18−20
ultra / 1080p
10−11
12−14
low / 720p
60−65
75−80
medium / 1080p
21−24
30−35
The average gaming FPS of Maxwell GPU Surface Book 940M GDDR5 in Fortnite is 29% more, than Iris Plus Graphics 640.
high / 1080p
12−14
16−18
ultra / 1080p
10−12
14−16
QHD / 1440p
1−2
4−5
low / 720p
24−27
35−40
medium / 1080p
14−16
18−20
The average gaming FPS of Maxwell GPU Surface Book 940M GDDR5 in Forza Horizon 4 is 38% more, than Iris Plus Graphics 640.
low / 768p
50−55
65−70
medium / 768p
45−50
55−60
high / 1080p
12−14
18−20
ultra / 1080p
6−7
8−9
QHD / 1440p
0−1
0−1
The average gaming FPS of Maxwell GPU Surface Book 940M GDDR5 in Grand Theft Auto V is 31% more, than Iris Plus Graphics 640.
high / 1080p
4−5
6−7
ultra / 1080p
3−4
4−5
4K / 2160p
0−1
1−2
low / 720p
12−14
18−20
medium / 1080p
6−7
8−9
The average gaming FPS of Maxwell GPU Surface Book 940M GDDR5 in Metro Exodus is 50% more, than Iris Plus Graphics 640.
low / 768p
95−100
100−110
high / 1080p
90−95
−
ultra / 1080p
80−85
90−95
medium / 1080p
90−95
95−100
The average gaming FPS of Maxwell GPU Surface Book 940M GDDR5 in Minecraft is 8% more, than Iris Plus Graphics 640.
high / 1080p
16−18
18−20
ultra / 1080p
14−16
14−16
low / 720p
30−35
40−45
medium / 1080p
18−20
20−22
The average gaming FPS of Maxwell GPU Surface Book 940M GDDR5 in PLAYERUNKNOWN'S BATTLEGROUNDS is 20% more, than Iris Plus Graphics 640.
high / 1080p
−
12−14
ultra / 1080p
7−8
8−9
QHD / 1440p
0−1
0−1
low / 720p
12−14
18−20
medium / 1080p
10−12
12−14
The average gaming FPS of Maxwell GPU Surface Book 940M GDDR5 in Red Dead Redemption 2 is 30% more, than Iris Plus Graphics 640.
low / 768p
24−27
35−40
medium / 768p
16−18
21−24
high / 1080p
9−10
12−14
ultra / 1080p
6−7
8−9
4K / 2160p
6−7
7−8
The average gaming FPS of Maxwell GPU Surface Book 940M GDDR5 in The Witcher 3: Wild Hunt is 30% more, than Iris Plus Graphics 640.
low / 768p
85−90
90−95
medium / 768p
45−50
50−55
ultra / 1080p
18−20
24−27
high / 768p
35−40
40−45
The average gaming FPS of Maxwell GPU Surface Book 940M GDDR5 in World of Tanks is 12% more, than Iris Plus Graphics 640.
Full Specs
Iris Plus Graphics 640
Maxwell GPU Surface Book 940M GDDR5
Architecture
Gen. 9.5 Kaby Lake
Maxwell
Code name
Kaby Lake GT3e
Surface Book
Type
Laptop
Laptop
Release date
3 January 2017
1 October 2015
Pipelines
48
384
Core clock speed
300 MHz
954 MHz
Boost Clock
1050 MHz
993 MHz
Transistor count
189 million
Manufacturing process technology
14 nm
28 nm
Texture fill rate
52.80
Memory bus width
64/128 Bit
64 Bit
Memory clock speed
5012 MHz
Shared memory
+
-
DirectX
12 (12_1)
DirectX 12 (FL 11_0), Shader 5.0
Shader Model
6.4
OpenGL
4.6
OpenCL
2.1
Vulkan
1.1.103
CUDA
+
Optimus
+
Quick Sync
+
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