Iris Plus Graphics 645 vs Radeon HD 8870M
Find out if it is worth upgrading your current GPU setup by comparing Iris Plus Graphics 645 and Radeon HD 8870M. 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 Iris Plus Graphics 645 and Radeon HD 8870M. 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.
Iris Plus Graphics 645 and Radeon HD 8870M are Laptop Graphics Cards
Note: Iris Plus Graphics 645 and Radeon HD 8870M 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 645 or Radeon HD 8870M here:
Main Specs
Iris Plus Graphics 645
Radeon HD 8870M
Power consumption (TDP)
15 Watt
Interface
PCIe 3.0 x1
PCIe 3.0 x16
Memory type
DDR3/DDR4
GDDR5, DDR3
Maximum RAM amount
2 GB
Display Connectors
No outputs
No outputs
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Iris Plus Graphics 645 is connected by PCIe 3.0 x1, and Radeon HD 8870M uses PCIe 3.0 x16 interface.
Both cards are used in Laptops.
Iris Plus Graphics 645 is build with Gen. 9.5 Coffee Lake architecture, and Radeon HD 8870M - with GCN.
Core clock speed of Radeon HD 8870M is 425 MHz higher, than Iris Plus Graphics 645.
Iris Plus Graphics 645 is manufactured by 14 nm process technology, and Radeon HD 8870M - 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
4−5
7−8
ultra / 1080p
2−3
4−5
QHD / 1440p
0−1
0−1
low / 720p
12−14
18−20
medium / 1080p
5−6
9−10
The average gaming FPS of Radeon HD 8870M in Assassin's Creed Odyssey is 66% more, than Iris Plus Graphics 645.
high / 1080p
−
12−14
ultra / 1080p
7−8
10−12
QHD / 1440p
0−1
0−1
low / 720p
16−18
27−30
medium / 1080p
8−9
14−16
The average gaming FPS of Radeon HD 8870M in Battlefield 5 is 63% more, than Iris Plus Graphics 645.
low / 768p
45−50
45−50
high / 1080p
45−50
45−50
QHD / 1440p
0−1
0−1
Iris Plus Graphics 645 and Radeon HD 8870M have the same average FPS in Call of Duty: Warzone.
low / 768p
100−110
140−150
medium / 768p
80−85
110−120
ultra / 1080p
35−40
55−60
QHD / 1440p
24−27
30−35
4K / 2160p
−
27−30
high / 768p
60−65
85−90
The average gaming FPS of Radeon HD 8870M in Counter-Strike: Global Offensive is 40% more, than Iris Plus Graphics 645.
low / 768p
55−60
55−60
ultra / 1080p
12−14
21−24
medium / 1080p
45−50
45−50
The average gaming FPS of Radeon HD 8870M in Cyberpunk 2077 is 7% more, than Iris Plus Graphics 645.
low / 768p
65−70
85−90
medium / 768p
45−50
60−65
ultra / 1080p
21−24
35−40
The average gaming FPS of Radeon HD 8870M in Dota 2 is 37% more, than Iris Plus Graphics 645.
high / 1080p
5−6
9−10
ultra / 1080p
5−6
8−9
4K / 2160p
3−4
4−5
low / 720p
12−14
21−24
medium / 1080p
5−6
10−11
The average gaming FPS of Radeon HD 8870M in Far Cry 5 is 83% more, than Iris Plus Graphics 645.
high / 1080p
12−14
16−18
ultra / 1080p
8−9
10−12
low / 720p
45−50
65−70
medium / 1080p
12−14
24−27
The average gaming FPS of Radeon HD 8870M in Fortnite is 50% more, than Iris Plus Graphics 645.
high / 1080p
8−9
12−14
ultra / 1080p
−
12−14
QHD / 1440p
0−1
2−3
low / 720p
16−18
27−30
medium / 1080p
9−10
14−16
The average gaming FPS of Radeon HD 8870M in Forza Horizon 4 is 63% more, than Iris Plus Graphics 645.
low / 768p
40−45
55−60
medium / 768p
35−40
45−50
high / 1080p
7−8
14−16
ultra / 1080p
5−6
7−8
QHD / 1440p
0−1
0−1
The average gaming FPS of Radeon HD 8870M in Grand Theft Auto V is 34% more, than Iris Plus Graphics 645.
high / 1080p
3−4
5−6
ultra / 1080p
2−3
3−4
4K / 2160p
0−1
0−1
low / 720p
7−8
14−16
medium / 1080p
4−5
7−8
The average gaming FPS of Radeon HD 8870M in Metro Exodus is 75% more, than Iris Plus Graphics 645.
low / 768p
85−90
95−100
high / 1080p
80−85
90−95
ultra / 1080p
70−75
80−85
medium / 1080p
−
95−100
The average gaming FPS of Radeon HD 8870M in Minecraft is 12% more, than Iris Plus Graphics 645.
high / 1080p
16−18
16−18
ultra / 1080p
14−16
14−16
low / 720p
24−27
35−40
medium / 1080p
16−18
18−20
The average gaming FPS of Radeon HD 8870M in PLAYERUNKNOWN'S BATTLEGROUNDS is 22% more, than Iris Plus Graphics 645.
ultra / 1080p
7−8
8−9
QHD / 1440p
0−1
0−1
low / 720p
7−8
14−16
medium / 1080p
−
10−12
The average gaming FPS of Radeon HD 8870M in Red Dead Redemption 2 is 57% more, than Iris Plus Graphics 645.
low / 768p
16−18
27−30
medium / 768p
12−14
18−20
high / 1080p
6−7
10−11
ultra / 1080p
5−6
7−8
4K / 2160p
−
6−7
The average gaming FPS of Radeon HD 8870M in The Witcher 3: Wild Hunt is 60% more, than Iris Plus Graphics 645.
low / 768p
80−85
85−90
medium / 768p
35−40
45−50
ultra / 1080p
14−16
21−24
high / 768p
30−33
35−40
The average gaming FPS of Radeon HD 8870M in World of Tanks is 17% more, than Iris Plus Graphics 645.
Full Specs
Iris Plus Graphics 645
Radeon HD 8870M
Architecture
Gen. 9.5 Coffee Lake
GCN
Code name
Kaby Lake GT3e
Venus
Type
Laptop
Laptop
Release date
10 July 2019
18 December 2012
Pipelines
48
640
Core clock speed
300 MHz
725 MHz
Boost Clock
1150 MHz
775 MHz
Transistor count
1,500 million
Manufacturing process technology
14 nm
28 nm
Texture fill rate
50.40
31.00
Floating-point performance
992.0 gflops
Memory bus width
128 Bit
Memory clock speed
4500 MHz
Memory bandwidth
72 GB/s
Shared memory
+
-
DirectX
12 (12_1)
12 (11_1)
Shader Model
6.4
5.1
OpenGL
4.6
4.6
OpenCL
2.1
1.2
Vulkan
1.1.103
1.2.131
Bitcoin / BTC (SHA256)
107 Mh/s
Laptop size
large
Quick Sync
+
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