Iris Plus Graphics 645 vs Radeon HD 4870
Find out if it is worth upgrading your current GPU setup by comparing Iris Plus Graphics 645 and Radeon HD 4870. 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 4870. 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 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 4870
Power consumption (TDP)
15 Watt
150 Watt
Interface
PCIe 3.0 x1
PCIe 2.0 x16
Supplementary power connectors
2x 6-pin
Memory type
DDR3/DDR4
GDDR5
Maximum RAM amount
1 GB
Display Connectors
No outputs
2x DVI, 1x S-Video
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Radeon HD 4870 has 900% more power consumption, than Iris Plus Graphics 645.
Iris Plus Graphics 645 is connected by PCIe 3.0 x1, and Radeon HD 4870 uses PCIe 2.0 x16 interface.
Iris Plus Graphics 645 is used in Laptops, and Radeon HD 4870 - in Desktops.
Iris Plus Graphics 645 is build with Gen. 9.5 Coffee Lake architecture, and Radeon HD 4870 - with TeraScale.
Core clock speed of Radeon HD 4870 is 450 MHz higher, than Iris Plus Graphics 645.
Iris Plus Graphics 645 is manufactured by 14 nm process technology, and Radeon HD 4870 - 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
4−5
3−4
ultra / 1080p
2−3
1−2
QHD / 1440p
0−1
0−1
low / 720p
12−14
14−16
medium / 1080p
5−6
6−7
Iris Plus Graphics 645 and Radeon HD 4870 have the same average FPS in Assassin's Creed Odyssey.
high / 1080p
−
8−9
ultra / 1080p
7−8
6−7
QHD / 1440p
0−1
0−1
low / 720p
16−18
21−24
medium / 1080p
8−9
9−10
The average gaming FPS of Radeon HD 4870 in Battlefield 5 is 9% more, than Iris Plus Graphics 645.
low / 768p
45−50
45−50
high / 1080p
45−50
40−45
QHD / 1440p
0−1
0−1
The average gaming FPS of Iris Plus Graphics 645 in Call of Duty: Warzone is 4% more, than Radeon HD 4870.
low / 768p
100−110
120−130
medium / 768p
80−85
100−110
ultra / 1080p
35−40
45−50
QHD / 1440p
24−27
24−27
high / 768p
60−65
75−80
The average gaming FPS of Radeon HD 4870 in Counter-Strike: Global Offensive is 22% more, than Iris Plus Graphics 645.
low / 768p
55−60
70−75
ultra / 1080p
12−14
21−24
medium / 1080p
45−50
40−45
The average gaming FPS of Radeon HD 4870 in Cyberpunk 2077 is 15% more, than Iris Plus Graphics 645.
low / 768p
65−70
75−80
medium / 768p
45−50
55−60
ultra / 1080p
21−24
30−35
The average gaming FPS of Radeon HD 4870 in Dota 2 is 22% more, than Iris Plus Graphics 645.
high / 1080p
5−6
4−5
ultra / 1080p
5−6
4−5
4K / 2160p
3−4
1−2
low / 720p
12−14
14−16
medium / 1080p
5−6
6−7
Iris Plus Graphics 645 and Radeon HD 4870 have the same average FPS in Far Cry 5.
high / 1080p
12−14
12−14
ultra / 1080p
8−9
7−8
QHD / 1440p
−
4−5
low / 720p
45−50
60−65
medium / 1080p
12−14
18−20
The average gaming FPS of Radeon HD 4870 in Fortnite is 25% more, than Iris Plus Graphics 645.
high / 1080p
8−9
7−8
ultra / 1080p
−
7−8
QHD / 1440p
0−1
0−1
low / 720p
16−18
21−24
medium / 1080p
9−10
10−11
The average gaming FPS of Radeon HD 4870 in Forza Horizon 4 is 18% more, than Iris Plus Graphics 645.
low / 768p
40−45
50−55
medium / 768p
35−40
−
high / 1080p
7−8
10−11
ultra / 1080p
5−6
4−5
QHD / 1440p
0−1
0−1
medium / 720p
−
40−45
The average gaming FPS of Radeon HD 4870 in Grand Theft Auto V is 22% more, than Iris Plus Graphics 645.
high / 1080p
3−4
2−3
ultra / 1080p
2−3
0−1
4K / 2160p
0−1
0−1
low / 720p
7−8
9−10
medium / 1080p
4−5
4−5
Iris Plus Graphics 645 and Radeon HD 4870 have the same average FPS in Metro Exodus.
low / 768p
85−90
85−90
high / 1080p
80−85
70−75
ultra / 1080p
70−75
−
The average gaming FPS of Iris Plus Graphics 645 in Minecraft is 6% more, than Radeon HD 4870.
high / 1080p
16−18
−
ultra / 1080p
14−16
12−14
low / 720p
24−27
30−35
medium / 1080p
16−18
14−16
The average gaming FPS of Radeon HD 4870 in PLAYERUNKNOWN'S BATTLEGROUNDS is 5% more, than Iris Plus Graphics 645.
high / 1080p
−
7−8
ultra / 1080p
7−8
4−5
QHD / 1440p
0−1
0−1
low / 720p
7−8
8−9
medium / 1080p
−
8−9
The average gaming FPS of Iris Plus Graphics 645 in Red Dead Redemption 2 is 16% more, than Radeon HD 4870.
low / 768p
16−18
18−20
medium / 768p
12−14
12−14
high / 1080p
6−7
7−8
ultra / 1080p
5−6
5−6
4K / 2160p
−
1−2
The average gaming FPS of Radeon HD 4870 in The Witcher 3: Wild Hunt is 10% more, than Iris Plus Graphics 645.
low / 768p
80−85
75−80
medium / 768p
35−40
40−45
ultra / 1080p
14−16
18−20
high / 768p
30−33
30−35
The average gaming FPS of Radeon HD 4870 in World of Tanks is 2% more, than Iris Plus Graphics 645.
Full Specs
Iris Plus Graphics 645
Radeon HD 4870
Architecture
Gen. 9.5 Coffee Lake
TeraScale
Code name
Kaby Lake GT3e
RV770
Type
Laptop
Desktop
Release date
10 July 2019
25 June 2008
Pipelines
48
800
Core clock speed
300 MHz
750 MHz
Boost Clock
1150 MHz
Transistor count
956 million
Manufacturing process technology
14 nm
55 nm
Texture fill rate
50.40
30.00
Floating-point performance
1,200.0 gflops
Length
250 mm
Memory bus width
256 Bit
Memory clock speed
3600 MHz
Memory bandwidth
115.2 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
1.1
Vulkan
1.1.103
N/A
Quick Sync
+
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