Iris Plus Graphics 645 vs Radeon HD 7870
In this comparison between Iris Plus Graphics 645 and Radeon HD 7870 you will find out which graphics card performs better in today's games. Bear in mind that third-party versions may have more efficient cooling and higher clock speeds. This will increase cards' performance, though not by much. In addition to raw power you should also take into account the dimensions. Thicker models simply will not fit into a small mini-ITX case. The resolution of your monitor also affects the choice, since 4K gameplay requires a more powerful GPU. And don't overspend on the graphics card. Other parts of your build may also need to be upgraded, save some money for the CPU or power supply. For some people Iris Plus Graphics 645 will be the best choice, for others Radeon HD 7870 will be their preference. Study the comparison tables below and make your choice.
Iris Plus Graphics 645 is a Laptop Graphics Card
Note: Iris Plus Graphics 645 is only used in laptop graphics. It has 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 here:
Main Specs
Iris Plus Graphics 645
Radeon HD 7870
Power consumption (TDP)
15 Watt
175 Watt
Interface
PCIe 3.0 x1
Memory type
DDR3/DDR4
GDDR5
Maximum RAM amount
2 GB
Display Connectors
No outputs
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Radeon HD 7870 has 1066% more power consumption, than Iris Plus Graphics 645.
Iris Plus Graphics 645 is used in Laptops, and Radeon HD 7870 - in Desktops.
Iris Plus Graphics 645 is build with Gen. 9.5 Coffee Lake architecture, and Radeon HD 7870 - with GCN.
Core clock speed of Radeon HD 7870 is 700 MHz higher, than Iris Plus Graphics 645.
Iris Plus Graphics 645 is manufactured by 14 nm process technology, and Radeon HD 7870 - 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
24−27
ultra / 1080p
2−3
14−16
QHD / 1440p
0−1
9−10
4K / 2160p
−
6−7
low / 720p
12−14
45−50
medium / 1080p
5−6
30−33
The average gaming FPS of Radeon HD 7870 in Assassin's Creed Odyssey is 383% more, than Iris Plus Graphics 645.
high / 1080p
−
35−40
ultra / 1080p
7−8
30−35
QHD / 1440p
0−1
16−18
4K / 2160p
−
10−11
low / 720p
16−18
75−80
medium / 1080p
8−9
40−45
The average gaming FPS of Radeon HD 7870 in Battlefield 5 is 354% more, than Iris Plus Graphics 645.
low / 768p
45−50
50−55
high / 1080p
45−50
−
QHD / 1440p
0−1
0−1
The average gaming FPS of Radeon HD 7870 in Call of Duty: Warzone is 10% more, than Iris Plus Graphics 645.
low / 768p
100−110
240−250
medium / 768p
80−85
210−220
ultra / 1080p
35−40
130−140
QHD / 1440p
24−27
100−110
4K / 2160p
−
60−65
high / 768p
60−65
180−190
The average gaming FPS of Radeon HD 7870 in Counter-Strike: Global Offensive is 185% more, than Iris Plus Graphics 645.
low / 768p
55−60
60−65
ultra / 1080p
12−14
−
medium / 1080p
45−50
55−60
The average gaming FPS of Radeon HD 7870 in Cyberpunk 2077 is 15% more, than Iris Plus Graphics 645.
low / 768p
65−70
120−130
medium / 768p
45−50
110−120
ultra / 1080p
21−24
85−90
The average gaming FPS of Radeon HD 7870 in Dota 2 is 142% more, than Iris Plus Graphics 645.
high / 1080p
5−6
30−33
ultra / 1080p
5−6
27−30
QHD / 1440p
−
21−24
4K / 2160p
3−4
9−10
low / 720p
12−14
60−65
medium / 1080p
5−6
30−35
The average gaming FPS of Radeon HD 7870 in Far Cry 5 is 433% more, than Iris Plus Graphics 645.
high / 1080p
12−14
35−40
ultra / 1080p
8−9
30−33
QHD / 1440p
−
18−20
low / 720p
45−50
130−140
medium / 1080p
12−14
80−85
The average gaming FPS of Radeon HD 7870 in Fortnite is 255% more, than Iris Plus Graphics 645.
high / 1080p
8−9
40−45
ultra / 1080p
−
30−33
QHD / 1440p
0−1
18−20
4K / 2160p
−
14−16
low / 720p
16−18
75−80
medium / 1080p
9−10
45−50
The average gaming FPS of Radeon HD 7870 in Forza Horizon 4 is 400% more, than Iris Plus Graphics 645.
low / 768p
40−45
110−120
medium / 768p
35−40
100−110
high / 1080p
7−8
45−50
ultra / 1080p
5−6
20−22
QHD / 1440p
0−1
10−11
The average gaming FPS of Radeon HD 7870 in Grand Theft Auto V is 213% more, than Iris Plus Graphics 645.
high / 1080p
3−4
14−16
ultra / 1080p
2−3
12−14
QHD / 1440p
−
10−12
4K / 2160p
0−1
4−5
low / 720p
7−8
45−50
medium / 1080p
4−5
21−24
The average gaming FPS of Radeon HD 7870 in Metro Exodus is 500% more, than Iris Plus Graphics 645.
low / 768p
85−90
120−130
high / 1080p
80−85
−
ultra / 1080p
70−75
−
medium / 1080p
−
110−120
The average gaming FPS of Radeon HD 7870 in Minecraft is 43% more, than Iris Plus Graphics 645.
high / 1080p
16−18
−
ultra / 1080p
14−16
14−16
low / 720p
24−27
75−80
medium / 1080p
16−18
18−20
The average gaming FPS of Radeon HD 7870 in PLAYERUNKNOWN'S BATTLEGROUNDS is 94% more, than Iris Plus Graphics 645.
high / 1080p
−
16−18
ultra / 1080p
7−8
10−12
QHD / 1440p
0−1
4−5
4K / 2160p
−
2−3
low / 720p
7−8
45−50
medium / 1080p
−
24−27
The average gaming FPS of Radeon HD 7870 in Red Dead Redemption 2 is 314% more, than Iris Plus Graphics 645.
low / 768p
16−18
85−90
medium / 768p
12−14
50−55
high / 1080p
6−7
30−33
ultra / 1080p
5−6
16−18
4K / 2160p
−
10−11
The average gaming FPS of Radeon HD 7870 in The Witcher 3: Wild Hunt is 370% more, than Iris Plus Graphics 645.
low / 768p
80−85
90−95
medium / 768p
35−40
60−65
ultra / 1080p
14−16
45−50
high / 768p
30−33
55−60
The average gaming FPS of Radeon HD 7870 in World of Tanks is 58% more, than Iris Plus Graphics 645.
Full Specs
Iris Plus Graphics 645
Radeon HD 7870
Architecture
Gen. 9.5 Coffee Lake
GCN
Code name
Kaby Lake GT3e
Pitcairn XT
Type
Laptop
Desktop
Release date
10 July 2019
5 March 2012
Pipelines
48
1280
Core clock speed
300 MHz
1000 MHz
Boost Clock
1150 MHz
Transistor count
2800 Million
Manufacturing process technology
14 nm
28 nm
Texture fill rate
50.40
Memory bus width
256 Bit
Memory clock speed
4800 MHz
Shared memory
+
-
DirectX
12 (12_1)
DirectX 11.1, Shader 5.1
Shader Model
6.4
OpenGL
4.6
OpenCL
2.1
Vulkan
1.1.103
Monero / XMR (CryptoNight)
0.39 kh/s
Eyefinity
+
Decred / DCR (Decred)
0.63 Gh/s
Ethereum / ETH (DaggerHashimoto)
16.6 Mh/s
Zcash / ZEC (Equihash)
145 Sol/s
Quick Sync
+
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