Iris Plus Graphics 640 vs Radeon HD 8790M
In this comparison between Iris Plus Graphics 640 and Radeon HD 8790M 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 640 will be the best choice, for others Radeon HD 8790M will be their preference. Study the comparison tables below and make your choice.
Iris Plus Graphics 640 and Radeon HD 8790M are Laptop Graphics Cards
Note: Iris Plus Graphics 640 and Radeon HD 8790M 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 640 or Radeon HD 8790M here:
Main Specs
Iris Plus Graphics 640
Radeon HD 8790M
Power consumption (TDP)
15 Watt
Interface
PCIe 3.0 x1
MXM-A (3.0)
Supplementary power connectors
None
Memory type
DDR3L/LPDDR3/DDR4
GDDR5
Maximum RAM amount
32 GB
2 GB
Display Connectors
No outputs
No outputs
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Iris Plus Graphics 640 is connected by PCIe 3.0 x1, and Radeon HD 8790M uses MXM-A (3.0) interface.
Iris Plus Graphics 640 has 30 GB more memory, than Radeon HD 8790M.
Both cards are used in Laptops.
Iris Plus Graphics 640 is build with Gen. 9.5 Kaby Lake architecture, and Radeon HD 8790M - with GCN.
Core clock speed of Radeon HD 8790M is 550 MHz higher, than Iris Plus Graphics 640.
Iris Plus Graphics 640 is manufactured by 14 nm process technology, and Radeon HD 8790M - 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
6−7
3−4
ultra / 1080p
4−5
1−2
QHD / 1440p
0−1
0−1
low / 720p
16−18
14−16
medium / 1080p
8−9
6−7
The average gaming FPS of Iris Plus Graphics 640 in Assassin's Creed Odyssey is 50% more, than Radeon HD 8790M.
high / 1080p
12−14
8−9
ultra / 1080p
10−11
6−7
QHD / 1440p
0−1
0−1
low / 720p
24−27
21−24
medium / 1080p
12−14
9−10
The average gaming FPS of Iris Plus Graphics 640 in Battlefield 5 is 36% more, than Radeon HD 8790M.
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 640 in Call of Duty: Warzone is 4% more, than Radeon HD 8790M.
low / 768p
130−140
120−130
medium / 768p
110−120
100−110
ultra / 1080p
50−55
50−55
QHD / 1440p
27−30
24−27
4K / 2160p
27−30
−
high / 768p
80−85
75−80
The average gaming FPS of Iris Plus Graphics 640 in Counter-Strike: Global Offensive is 6% more, than Radeon HD 8790M.
low / 768p
55−60
70−75
ultra / 1080p
18−20
21−24
medium / 1080p
45−50
40−45
The average gaming FPS of Radeon HD 8790M in Cyberpunk 2077 is 9% more, than Iris Plus Graphics 640.
low / 768p
80−85
75−80
medium / 768p
55−60
55−60
ultra / 1080p
30−35
30−35
The average gaming FPS of Iris Plus Graphics 640 in Dota 2 is 3% more, than Radeon HD 8790M.
high / 1080p
8−9
4−5
ultra / 1080p
7−8
4−5
4K / 2160p
3−4
1−2
low / 720p
18−20
14−16
medium / 1080p
8−9
6−7
The average gaming FPS of Iris Plus Graphics 640 in Far Cry 5 is 50% more, than Radeon HD 8790M.
high / 1080p
14−16
12−14
ultra / 1080p
10−11
7−8
QHD / 1440p
−
4−5
low / 720p
60−65
60−65
medium / 1080p
21−24
18−20
The average gaming FPS of Iris Plus Graphics 640 in Fortnite is 8% more, than Radeon HD 8790M.
high / 1080p
12−14
8−9
ultra / 1080p
10−12
7−8
QHD / 1440p
1−2
0−1
low / 720p
24−27
21−24
medium / 1080p
14−16
10−11
The average gaming FPS of Iris Plus Graphics 640 in Forza Horizon 4 is 33% more, than Radeon HD 8790M.
low / 768p
50−55
50−55
medium / 768p
45−50
−
high / 1080p
12−14
10−11
ultra / 1080p
6−7
4−5
QHD / 1440p
0−1
0−1
medium / 720p
−
40−45
The average gaming FPS of Iris Plus Graphics 640 in Grand Theft Auto V is 9% more, than Radeon HD 8790M.
high / 1080p
4−5
2−3
ultra / 1080p
3−4
0−1
4K / 2160p
0−1
0−1
low / 720p
12−14
9−10
medium / 1080p
6−7
4−5
The average gaming FPS of Iris Plus Graphics 640 in Metro Exodus is 60% more, than Radeon HD 8790M.
low / 768p
95−100
85−90
high / 1080p
90−95
70−75
ultra / 1080p
80−85
−
medium / 1080p
90−95
−
The average gaming FPS of Iris Plus Graphics 640 in Minecraft is 18% more, than Radeon HD 8790M.
high / 1080p
16−18
−
ultra / 1080p
14−16
12−14
low / 720p
30−35
30−35
medium / 1080p
18−20
14−16
The average gaming FPS of Iris Plus Graphics 640 in PLAYERUNKNOWN'S BATTLEGROUNDS is 10% more, than Radeon HD 8790M.
high / 1080p
−
7−8
ultra / 1080p
7−8
4−5
QHD / 1440p
0−1
0−1
low / 720p
12−14
8−9
medium / 1080p
10−12
8−9
The average gaming FPS of Iris Plus Graphics 640 in Red Dead Redemption 2 is 42% more, than Radeon HD 8790M.
low / 768p
24−27
20−22
medium / 768p
16−18
12−14
high / 1080p
9−10
7−8
ultra / 1080p
6−7
5−6
4K / 2160p
6−7
1−2
The average gaming FPS of Iris Plus Graphics 640 in The Witcher 3: Wild Hunt is 44% more, than Radeon HD 8790M.
low / 768p
85−90
75−80
medium / 768p
45−50
40−45
ultra / 1080p
18−20
18−20
high / 768p
35−40
30−35
The average gaming FPS of Iris Plus Graphics 640 in World of Tanks is 11% more, than Radeon HD 8790M.
Full Specs
Iris Plus Graphics 640
Radeon HD 8790M
Architecture
Gen. 9.5 Kaby Lake
GCN
Code name
Kaby Lake GT3e
Mars XTX
Type
Laptop
Laptop
Release date
3 January 2017
16 November 2012
Pipelines
48
384
Core clock speed
300 MHz
850 MHz
Boost Clock
1050 MHz
900 MHz
Transistor count
189 million
950 million
Manufacturing process technology
14 nm
28 nm
Texture fill rate
52.80
21.60
Floating-point performance
691.2 gflops
Memory bus width
64/128 Bit
128 Bit
Memory clock speed
4500 MHz
Memory bandwidth
64 GB/s
Shared memory
+
-
DirectX
12 (12_1)
12 (11_1)
Shader Model
6.4
5.1
OpenGL
4.6
4.6
OpenCL
2.1
1.2
Vulkan
1.1.103
1.2.131
Bitcoin / BTC (SHA256)
80 Mh/s
Laptop size
medium sized
Quick Sync
+
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