Iris Plus Graphics 645 vs Mobility Radeon HD 4870
If you are going to buy a new graphics card and are choosing between Iris Plus Graphics 645 and Mobility Radeon HD 4870, 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 645 stacks up against Mobility Radeon HD 4870, check out specs charts below.
Iris Plus Graphics 645 and Mobility Radeon HD 4870 are Laptop Graphics Cards
Note: Iris Plus Graphics 645 and Mobility Radeon HD 4870 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 Mobility Radeon HD 4870 here:
Main Specs
Iris Plus Graphics 645
Mobility Radeon HD 4870
Power consumption (TDP)
15 Watt
Interface
PCIe 3.0 x1
PCIe 2.0 x16
Memory type
DDR3/DDR4
GDDR5
Maximum RAM amount
1 GB
Display Connectors
No outputs
No outputs
Check Price
Check Price
Iris Plus Graphics 645 is connected by PCIe 3.0 x1, and Mobility Radeon HD 4870 uses PCIe 2.0 x16 interface.
Both cards are used in Laptops.
Iris Plus Graphics 645 is build with Gen. 9.5 Coffee Lake architecture, and Mobility Radeon HD 4870 - with Terascale 1.
Core clock speed of Mobility Radeon HD 4870 is 250 MHz higher, than Iris Plus Graphics 645.
Iris Plus Graphics 645 is manufactured by 14 nm process technology, and Mobility 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
7−8
ultra / 1080p
2−3
4−5
QHD / 1440p
0−1
0−1
low / 720p
12−14
16−18
medium / 1080p
5−6
8−9
The average gaming FPS of Mobility Radeon HD 4870 in Assassin's Creed Odyssey is 50% more, than Iris Plus Graphics 645.
high / 1080p
−
12−14
ultra / 1080p
7−8
10−11
QHD / 1440p
0−1
0−1
low / 720p
16−18
24−27
medium / 1080p
8−9
12−14
The average gaming FPS of Mobility Radeon HD 4870 in Battlefield 5 is 45% 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 Mobility Radeon HD 4870 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
30−33
4K / 2160p
−
27−30
high / 768p
60−65
80−85
The average gaming FPS of Mobility Radeon HD 4870 in Counter-Strike: Global Offensive is 38% more, than Iris Plus Graphics 645.
low / 768p
55−60
55−60
ultra / 1080p
12−14
20−22
medium / 1080p
45−50
45−50
The average gaming FPS of Mobility Radeon HD 4870 in Cyberpunk 2077 is 7% more, than Iris Plus Graphics 645.
low / 768p
65−70
80−85
medium / 768p
45−50
60−65
ultra / 1080p
21−24
35−40
The average gaming FPS of Mobility Radeon HD 4870 in Dota 2 is 33% more, than Iris Plus Graphics 645.
high / 1080p
5−6
8−9
ultra / 1080p
5−6
8−9
4K / 2160p
3−4
3−4
low / 720p
12−14
18−20
medium / 1080p
5−6
9−10
The average gaming FPS of Mobility Radeon HD 4870 in Far Cry 5 is 50% more, than Iris Plus Graphics 645.
high / 1080p
12−14
14−16
ultra / 1080p
8−9
10−11
low / 720p
45−50
60−65
medium / 1080p
12−14
24−27
The average gaming FPS of Mobility Radeon HD 4870 in Fortnite is 40% more, than Iris Plus Graphics 645.
high / 1080p
8−9
12−14
ultra / 1080p
−
10−12
QHD / 1440p
0−1
1−2
low / 720p
16−18
27−30
medium / 1080p
9−10
14−16
The average gaming FPS of Mobility Radeon HD 4870 in Forza Horizon 4 is 63% more, than Iris Plus Graphics 645.
low / 768p
40−45
50−55
medium / 768p
35−40
45−50
high / 1080p
7−8
12−14
ultra / 1080p
5−6
6−7
QHD / 1440p
0−1
0−1
The average gaming FPS of Mobility Radeon HD 4870 in Grand Theft Auto V is 26% 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
12−14
medium / 1080p
4−5
6−7
The average gaming FPS of Mobility Radeon HD 4870 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
−
90−95
The average gaming FPS of Mobility Radeon HD 4870 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
30−35
medium / 1080p
16−18
18−20
The average gaming FPS of Mobility Radeon HD 4870 in PLAYERUNKNOWN'S BATTLEGROUNDS is 11% more, than Iris Plus Graphics 645.
ultra / 1080p
7−8
7−8
QHD / 1440p
0−1
0−1
low / 720p
7−8
12−14
medium / 1080p
−
10−12
The average gaming FPS of Mobility Radeon HD 4870 in Red Dead Redemption 2 is 42% more, than Iris Plus Graphics 645.
low / 768p
16−18
24−27
medium / 768p
12−14
16−18
high / 1080p
6−7
9−10
ultra / 1080p
5−6
6−7
4K / 2160p
−
6−7
The average gaming FPS of Mobility Radeon HD 4870 in The Witcher 3: Wild Hunt is 40% more, than Iris Plus Graphics 645.
low / 768p
80−85
85−90
medium / 768p
35−40
45−50
ultra / 1080p
14−16
20−22
high / 768p
30−33
35−40
The average gaming FPS of Mobility Radeon HD 4870 in World of Tanks is 17% more, than Iris Plus Graphics 645.
Full Specs
Iris Plus Graphics 645
Mobility Radeon HD 4870
Architecture
Gen. 9.5 Coffee Lake
Terascale 1
Code name
Kaby Lake GT3e
M98-XT
Type
Laptop
Laptop
Release date
10 July 2019
9 January 2009
Pipelines
48
800
Core clock speed
300 MHz
550 MHz
Boost Clock
1150 MHz
Transistor count
956 million
Manufacturing process technology
14 nm
55 nm
Texture fill rate
50.40
22.00
Floating-point performance
880.0 gflops
Memory bus width
256 Bit
Memory clock speed
888 MHz
Memory bandwidth
56.83 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
Laptop size
large
Quick Sync
+
Check Price
Check Price
