Iris Plus Graphics 645 vs Radeon R9 M385X
In this comparison between Iris Plus Graphics 645 and Radeon R9 M385X 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 R9 M385X will be their preference. Study the comparison tables below and make your choice.
Iris Plus Graphics 645 and Radeon R9 M385X are Laptop Graphics Cards
Note: Iris Plus Graphics 645 and Radeon R9 M385X 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 R9 M385X here:
Main Specs
Iris Plus Graphics 645
Radeon R9 M385X
Power consumption (TDP)
15 Watt
Interface
PCIe 3.0 x1
PCIe 3.0 x16
Memory type
DDR3/DDR4
GDDR5
Maximum RAM amount
4 GB
Display Connectors
No outputs
No outputs
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Iris Plus Graphics 645 is connected by PCIe 3.0 x1, and Radeon R9 M385X 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 R9 M385X - with GCN.
Core clock speed of Radeon R9 M385X is 800 MHz higher, than Iris Plus Graphics 645.
Iris Plus Graphics 645 is manufactured by 14 nm process technology, and Radeon R9 M385X - 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
8−9
ultra / 1080p
2−3
5−6
QHD / 1440p
0−1
0−1
low / 720p
12−14
18−20
medium / 1080p
5−6
10−11
The average gaming FPS of Radeon R9 M385X in Assassin's Creed Odyssey is 66% more, than Iris Plus Graphics 645.
high / 1080p
−
14−16
ultra / 1080p
7−8
12−14
QHD / 1440p
0−1
0−1
low / 720p
16−18
30−33
medium / 1080p
8−9
14−16
The average gaming FPS of Radeon R9 M385X in Battlefield 5 is 72% 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 R9 M385X have the same average FPS in Call of Duty: Warzone.
low / 768p
100−110
150−160
medium / 768p
80−85
120−130
ultra / 1080p
35−40
60−65
QHD / 1440p
24−27
35−40
4K / 2160p
−
27−30
high / 768p
60−65
90−95
The average gaming FPS of Radeon R9 M385X in Counter-Strike: Global Offensive is 51% 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 R9 M385X in Cyberpunk 2077 is 7% more, than Iris Plus Graphics 645.
low / 768p
65−70
85−90
medium / 768p
45−50
65−70
ultra / 1080p
21−24
40−45
The average gaming FPS of Radeon R9 M385X in Dota 2 is 44% more, than Iris Plus Graphics 645.
high / 1080p
5−6
10−11
ultra / 1080p
5−6
9−10
4K / 2160p
3−4
4−5
low / 720p
12−14
21−24
medium / 1080p
5−6
10−11
The average gaming FPS of Radeon R9 M385X in Far Cry 5 is 83% more, than Iris Plus Graphics 645.
high / 1080p
12−14
16−18
ultra / 1080p
8−9
12−14
low / 720p
45−50
65−70
medium / 1080p
12−14
27−30
The average gaming FPS of Radeon R9 M385X in Fortnite is 55% more, than Iris Plus Graphics 645.
high / 1080p
8−9
14−16
ultra / 1080p
−
12−14
QHD / 1440p
0−1
2−3
low / 720p
16−18
30−35
medium / 1080p
9−10
16−18
The average gaming FPS of Radeon R9 M385X in Forza Horizon 4 is 90% more, than Iris Plus Graphics 645.
low / 768p
40−45
60−65
medium / 768p
35−40
50−55
high / 1080p
7−8
16−18
ultra / 1080p
5−6
7−8
QHD / 1440p
0−1
0−1
The average gaming FPS of Radeon R9 M385X in Grand Theft Auto V is 47% more, than Iris Plus Graphics 645.
high / 1080p
3−4
5−6
ultra / 1080p
2−3
4−5
4K / 2160p
0−1
1−2
low / 720p
7−8
16−18
medium / 1080p
4−5
7−8
The average gaming FPS of Radeon R9 M385X in Metro Exodus is 100% more, than Iris Plus Graphics 645.
low / 768p
85−90
95−100
high / 1080p
80−85
95−100
ultra / 1080p
70−75
85−90
medium / 1080p
−
95−100
The average gaming FPS of Radeon R9 M385X in Minecraft is 17% more, than Iris Plus Graphics 645.
high / 1080p
16−18
18−20
ultra / 1080p
14−16
14−16
low / 720p
24−27
35−40
medium / 1080p
16−18
18−20
The average gaming FPS of Radeon R9 M385X 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
−
12−14
The average gaming FPS of Radeon R9 M385X in Red Dead Redemption 2 is 57% more, than Iris Plus Graphics 645.
low / 768p
16−18
30−35
medium / 768p
12−14
20−22
high / 1080p
6−7
10−12
ultra / 1080p
5−6
7−8
4K / 2160p
−
6−7
The average gaming FPS of Radeon R9 M385X in The Witcher 3: Wild Hunt is 80% more, than Iris Plus Graphics 645.
low / 768p
80−85
90−95
medium / 768p
35−40
45−50
ultra / 1080p
14−16
21−24
high / 768p
30−33
40−45
The average gaming FPS of Radeon R9 M385X in World of Tanks is 24% more, than Iris Plus Graphics 645.
Full Specs
Iris Plus Graphics 645
Radeon R9 M385X
Architecture
Gen. 9.5 Coffee Lake
GCN
Code name
Kaby Lake GT3e
Strato-XT-M3
Type
Laptop
Laptop
Release date
10 July 2019
16 June 2015
Pipelines
48
896
Core clock speed
300 MHz
1100 MHz
Boost Clock
1150 MHz
1100 MHz
Transistor count
2,080 million
Manufacturing process technology
14 nm
28 nm
Texture fill rate
50.40
61.60
Floating-point performance
1,971 gflops
Memory bus width
128 Bit
Memory clock speed
1500 MHz
Memory bandwidth
76.8 GB/s
Shared memory
+
-
DirectX
12 (12_1)
Shader Model
6.4
6.3
OpenGL
4.6
4.4
OpenCL
2.1
Not Listed
Vulkan
1.1.103
FreeSync
+
Bus support
PCIe 3.0
Laptop size
large
Eyefinity
+
HD3D
+
PowerTune
+
DualGraphics
+
ZeroCore
+
Switchable graphics
+
Mantle
+
Quick Sync
+
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