Iris Plus Graphics 655 vs Mobility Radeon HD 3870 X2
When choosing between Iris Plus Graphics 655 and Mobility Radeon HD 3870 X2, 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 Iris Plus Graphics 655 and Mobility Radeon HD 3870 X2.
Iris Plus Graphics 655 and Mobility Radeon HD 3870 X2 are Laptop Graphics Cards
Note: Iris Plus Graphics 655 and Mobility Radeon HD 3870 X2 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 655 or Mobility Radeon HD 3870 X2 here:
Main Specs
Iris Plus Graphics 655
Mobility Radeon HD 3870 X2
Power consumption (TDP)
15 Watt
110 Watt
Interface
PCIe 3.0 x1
PCIe 2.0 x16
Memory type
DDR3/DDR4
GDDR3
Maximum RAM amount
512 MB
Display Connectors
No outputs
No outputs
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Mobility Radeon HD 3870 X2 has 633% more power consumption, than Iris Plus Graphics 655.
Iris Plus Graphics 655 is connected by PCIe 3.0 x1, and Mobility Radeon HD 3870 X2 uses PCIe 2.0 x16 interface.
Both cards are used in Laptops.
Iris Plus Graphics 655 is build with Gen. 9.5 Kaby Lake architecture, and Mobility Radeon HD 3870 X2 - with RV6xx.
Core clock speed of Mobility Radeon HD 3870 X2 is 360 MHz higher, than Iris Plus Graphics 655.
Iris Plus Graphics 655 is manufactured by 14 nm process technology, and Mobility Radeon HD 3870 X2 - by 55 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
12−14
6−7
ultra / 1080p
7−8
4−5
QHD / 1440p
2−3
0−1
low / 720p
27−30
16−18
medium / 1080p
16−18
8−9
The average gaming FPS of Iris Plus Graphics 655 in Assassin's Creed Odyssey is 77% more, than Mobility Radeon HD 3870 X2.
high / 1080p
21−24
12−14
ultra / 1080p
18−20
10−11
QHD / 1440p
4−5
0−1
low / 720p
45−50
24−27
medium / 1080p
21−24
12−14
The average gaming FPS of Iris Plus Graphics 655 in Battlefield 5 is 80% more, than Mobility Radeon HD 3870 X2.
low / 768p
45−50
45−50
high / 1080p
−
45−50
QHD / 1440p
0−1
0−1
Iris Plus Graphics 655 and Mobility Radeon HD 3870 X2 have the same average FPS in Call of Duty: Warzone.
low / 768p
190−200
130−140
medium / 768p
160−170
110−120
ultra / 1080p
85−90
50−55
QHD / 1440p
45−50
27−30
4K / 2160p
30−33
27−30
high / 768p
120−130
80−85
The average gaming FPS of Iris Plus Graphics 655 in Counter-Strike: Global Offensive is 47% more, than Mobility Radeon HD 3870 X2.
low / 768p
55−60
55−60
ultra / 1080p
35−40
18−20
medium / 1080p
45−50
45−50
The average gaming FPS of Iris Plus Graphics 655 in Cyberpunk 2077 is 14% more, than Mobility Radeon HD 3870 X2.
low / 768p
100−110
80−85
medium / 768p
85−90
55−60
ultra / 1080p
55−60
30−35
The average gaming FPS of Iris Plus Graphics 655 in Dota 2 is 45% more, than Mobility Radeon HD 3870 X2.
high / 1080p
14−16
8−9
ultra / 1080p
14−16
7−8
4K / 2160p
5−6
3−4
low / 720p
30−35
18−20
medium / 1080p
16−18
8−9
The average gaming FPS of Iris Plus Graphics 655 in Far Cry 5 is 88% more, than Mobility Radeon HD 3870 X2.
high / 1080p
21−24
14−16
ultra / 1080p
16−18
10−11
QHD / 1440p
16−18
−
low / 720p
85−90
60−65
medium / 1080p
45−50
21−24
The average gaming FPS of Iris Plus Graphics 655 in Fortnite is 59% more, than Mobility Radeon HD 3870 X2.
high / 1080p
21−24
12−14
ultra / 1080p
16−18
10−12
QHD / 1440p
7−8
1−2
low / 720p
45−50
24−27
medium / 1080p
24−27
14−16
The average gaming FPS of Iris Plus Graphics 655 in Forza Horizon 4 is 84% more, than Mobility Radeon HD 3870 X2.
low / 768p
75−80
50−55
medium / 768p
65−70
45−50
high / 1080p
24−27
12−14
ultra / 1080p
10−11
6−7
QHD / 1440p
1−2
0−1
The average gaming FPS of Iris Plus Graphics 655 in Grand Theft Auto V is 55% more, than Mobility Radeon HD 3870 X2.
high / 1080p
8−9
4−5
ultra / 1080p
6−7
3−4
4K / 2160p
2−3
0−1
low / 720p
24−27
12−14
medium / 1080p
10−12
6−7
The average gaming FPS of Iris Plus Graphics 655 in Metro Exodus is 100% more, than Mobility Radeon HD 3870 X2.
low / 768p
100−110
95−100
high / 1080p
−
85−90
ultra / 1080p
95−100
80−85
medium / 1080p
100−110
90−95
The average gaming FPS of Iris Plus Graphics 655 in Minecraft is 13% more, than Mobility Radeon HD 3870 X2.
high / 1080p
21−24
16−18
ultra / 1080p
16−18
14−16
low / 720p
50−55
30−35
medium / 1080p
21−24
18−20
The average gaming FPS of Iris Plus Graphics 655 in PLAYERUNKNOWN'S BATTLEGROUNDS is 40% more, than Mobility Radeon HD 3870 X2.
high / 1080p
12−14
−
ultra / 1080p
9−10
7−8
QHD / 1440p
0−1
0−1
low / 720p
24−27
12−14
medium / 1080p
14−16
10−12
The average gaming FPS of Iris Plus Graphics 655 in Red Dead Redemption 2 is 60% more, than Mobility Radeon HD 3870 X2.
low / 768p
45−50
24−27
medium / 768p
27−30
16−18
high / 1080p
16−18
9−10
ultra / 1080p
9−10
6−7
4K / 2160p
7−8
6−7
The average gaming FPS of Iris Plus Graphics 655 in The Witcher 3: Wild Hunt is 69% more, than Mobility Radeon HD 3870 X2.
low / 768p
95−100
85−90
medium / 768p
55−60
45−50
ultra / 1080p
30−35
18−20
high / 768p
50−55
35−40
The average gaming FPS of Iris Plus Graphics 655 in World of Tanks is 27% more, than Mobility Radeon HD 3870 X2.
Full Specs
Iris Plus Graphics 655
Mobility Radeon HD 3870 X2
Architecture
Gen. 9.5 Kaby Lake
RV6xx
Code name
Kaby Lake GT3e
M88-XT CF
Type
Laptop
Laptop
Release date
1 September 2017
1 September 2008
Pipelines
48
640
Core clock speed
300 MHz
660 MHz
Boost Clock
1200 MHz
Transistor count
189 million
666 million
Manufacturing process technology
14 nm
55 nm
Texture fill rate
50.40
10.56
Floating-point performance
2x 422.4 gflops
Memory bus width
256 Bit
Memory clock speed
850 MHz
Memory bandwidth
54.4 GB/s
Shared memory
+
-
DirectX
12 (12_1)
10.1 (10_1)
Shader Model
6.4
4.1
OpenGL
4.6
3.3
OpenCL
2.1
N/A
Vulkan
1.1.103
N/A
Laptop size
large
Quick Sync
+
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