Iris Plus Graphics 645 vs Radeon RX 640
In this comparison between Iris Plus Graphics 645 and Radeon RX 640 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 RX 640 will be their preference. Study the comparison tables below and make your choice.
Iris Plus Graphics 645 and Radeon RX 640 are Laptop Graphics Cards
Note: Iris Plus Graphics 645 and Radeon RX 640 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 RX 640 here:
Main Specs
Iris Plus Graphics 645
Radeon RX 640
Power consumption (TDP)
15 Watt
50 Watt
Interface
PCIe 3.0 x1
PCIe 3.0 x8
Supplementary power connectors
None
Memory type
DDR3/DDR4
GDDR5
Maximum RAM amount
4 GB
Display Connectors
No outputs
1x DVI, 1x HDMI, 1x DisplayPort
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Radeon RX 640 has 233% more power consumption, than Iris Plus Graphics 645.
Iris Plus Graphics 645 is connected by PCIe 3.0 x1, and Radeon RX 640 uses PCIe 3.0 x8 interface.
Both cards are used in Laptops.
Iris Plus Graphics 645 is build with Gen. 9.5 Coffee Lake architecture, and Radeon RX 640 - with Polaris.
Core clock speed of Radeon RX 640 is 918 MHz higher, than Iris Plus Graphics 645.
Iris Plus Graphics 645 and Radeon RX 640 are manufactured by 14 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
5−6
ultra / 1080p
2−3
3−4
QHD / 1440p
0−1
2−3
low / 720p
12−14
16−18
medium / 1080p
5−6
7−8
The average gaming FPS of Radeon RX 640 in Assassin's Creed Odyssey is 33% more, than Iris Plus Graphics 645.
high / 1080p
−
10−12
ultra / 1080p
7−8
8−9
QHD / 1440p
0−1
0−1
low / 720p
16−18
24−27
medium / 1080p
8−9
10−12
The average gaming FPS of Radeon RX 640 in Battlefield 5 is 36% 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 RX 640.
low / 768p
100−110
130−140
medium / 768p
80−85
100−110
ultra / 1080p
35−40
50−55
QHD / 1440p
24−27
27−30
4K / 2160p
−
12−14
high / 768p
60−65
80−85
The average gaming FPS of Radeon RX 640 in Counter-Strike: Global Offensive is 29% more, than Iris Plus Graphics 645.
low / 768p
55−60
50−55
ultra / 1080p
12−14
18−20
medium / 1080p
45−50
45−50
Iris Plus Graphics 645 and Radeon RX 640 have the same average FPS in Cyberpunk 2077.
low / 768p
65−70
80−85
medium / 768p
45−50
55−60
ultra / 1080p
21−24
30−35
The average gaming FPS of Radeon RX 640 in Dota 2 is 26% more, than Iris Plus Graphics 645.
high / 1080p
5−6
7−8
ultra / 1080p
5−6
5−6
4K / 2160p
3−4
5−6
low / 720p
12−14
18−20
medium / 1080p
5−6
8−9
The average gaming FPS of Radeon RX 640 in Far Cry 5 is 50% more, than Iris Plus Graphics 645.
high / 1080p
12−14
7−8
ultra / 1080p
8−9
0−1
QHD / 1440p
−
0−1
low / 720p
45−50
60−65
medium / 1080p
12−14
18−20
The average gaming FPS of Radeon RX 640 in Fortnite is 20% more, than Iris Plus Graphics 645.
high / 1080p
8−9
10−11
QHD / 1440p
0−1
−
4K / 2160p
−
8−9
low / 720p
16−18
24−27
medium / 1080p
9−10
12−14
The average gaming FPS of Radeon RX 640 in Forza Horizon 4 is 45% more, than Iris Plus Graphics 645.
low / 768p
40−45
50−55
medium / 768p
35−40
−
high / 1080p
7−8
10−12
ultra / 1080p
5−6
5−6
QHD / 1440p
0−1
−
medium / 720p
−
45−50
The average gaming FPS of Radeon RX 640 in Grand Theft Auto V is 27% more, than Iris Plus Graphics 645.
high / 1080p
3−4
3−4
ultra / 1080p
2−3
1−2
4K / 2160p
0−1
−
low / 720p
7−8
10−11
medium / 1080p
4−5
5−6
The average gaming FPS of Radeon RX 640 in Metro Exodus is 25% more, than Iris Plus Graphics 645.
low / 768p
85−90
90−95
high / 1080p
80−85
−
ultra / 1080p
70−75
80−85
The average gaming FPS of Radeon RX 640 in Minecraft is 8% more, than Iris Plus Graphics 645.
high / 1080p
16−18
6−7
ultra / 1080p
14−16
2−3
4K / 2160p
−
0−1
low / 720p
24−27
27−30
medium / 1080p
16−18
10−11
The average gaming FPS of Iris Plus Graphics 645 in PLAYERUNKNOWN'S BATTLEGROUNDS is 50% more, than Radeon RX 640.
ultra / 1080p
7−8
−
QHD / 1440p
0−1
−
low / 720p
7−8
10−12
medium / 1080p
−
9−10
The average gaming FPS of Radeon RX 640 in Red Dead Redemption 2 is 57% more, than Iris Plus Graphics 645.
low / 768p
16−18
21−24
medium / 768p
12−14
14−16
high / 1080p
6−7
6−7
ultra / 1080p
5−6
4−5
4K / 2160p
−
3−4
The average gaming FPS of Radeon RX 640 in The Witcher 3: Wild Hunt is 20% 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
35−40
The average gaming FPS of Radeon RX 640 in World of Tanks is 7% more, than Iris Plus Graphics 645.
Full Specs
Iris Plus Graphics 645
Radeon RX 640
Architecture
Gen. 9.5 Coffee Lake
Polaris
Code name
Kaby Lake GT3e
Polaris 12
Type
Laptop
Laptop
Release date
10 July 2019
12 August 2019
Pipelines
48
640
Core clock speed
300 MHz
1218 MHz
Boost Clock
1150 MHz
1218 MHz
Transistor count
2,200 million
Manufacturing process technology
14 nm
14 nm
Texture fill rate
50.40
38.98
Memory bus width
64 Bit
Memory clock speed
6000 MHz
Memory bandwidth
112.0 GB/s
Shared memory
+
-
DirectX
12 (12_1)
12 (12_0)
Shader Model
6.4
6.4
OpenGL
4.6
4.6
OpenCL
2.1
2.0
Vulkan
1.1.103
1.2.131
FreeSync
+
Laptop size
large
Quick Sync
+
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