Radeon R6 M340DX vs Radeon RX 640
In this comparison between Radeon R6 M340DX 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 Radeon R6 M340DX will be the best choice, for others Radeon RX 640 will be their preference. Study the comparison tables below and make your choice.
Radeon R6 M340DX and Radeon RX 640 are Laptop Graphics Cards
Note: Radeon R6 M340DX 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 Radeon R6 M340DX or Radeon RX 640 here:
Main Specs
Radeon R6 M340DX
Radeon RX 640
Power consumption (TDP)
50 Watt
Interface
IGP
PCIe 3.0 x8
Supplementary power connectors
None
Memory type
DDR3
GDDR5
Maximum RAM amount
4 GB
Display Connectors
No outputs
1x DVI, 1x HDMI, 1x DisplayPort
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Radeon R6 M340DX is connected by IGP, and Radeon RX 640 uses PCIe 3.0 x8 interface.
Both cards are used in Laptops.
Radeon R6 M340DX is build with GCN architecture, and Radeon RX 640 - with Polaris.
Radeon R6 M340DX is manufactured by 28 nm process technology, and Radeon RX 640 - 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
2−3
5−6
ultra / 1080p
2−3
3−4
QHD / 1440p
0−1
2−3
low / 720p
10−11
16−18
medium / 1080p
3−4
7−8
The average gaming FPS of Radeon RX 640 in Assassin's Creed Odyssey is 100% more, than Radeon R6 M340DX.
high / 1080p
−
10−12
ultra / 1080p
5−6
8−9
QHD / 1440p
0−1
0−1
low / 720p
12−14
24−27
medium / 1080p
5−6
10−12
The average gaming FPS of Radeon RX 640 in Battlefield 5 is 87% more, than Radeon R6 M340DX.
low / 768p
45−50
45−50
high / 1080p
45−50
40−45
QHD / 1440p
0−1
0−1
The average gaming FPS of Radeon R6 M340DX in Call of Duty: Warzone is 4% more, than Radeon RX 640.
low / 768p
90−95
130−140
medium / 768p
65−70
100−110
ultra / 1080p
30−35
50−55
QHD / 1440p
21−24
27−30
4K / 2160p
−
12−14
high / 768p
45−50
80−85
The average gaming FPS of Radeon RX 640 in Counter-Strike: Global Offensive is 53% more, than Radeon R6 M340DX.
low / 768p
55−60
50−55
ultra / 1080p
9−10
18−20
medium / 1080p
45−50
45−50
The average gaming FPS of Radeon RX 640 in Cyberpunk 2077 is 2% more, than Radeon R6 M340DX.
low / 768p
60−65
80−85
medium / 768p
35−40
55−60
ultra / 1080p
18−20
30−35
The average gaming FPS of Radeon RX 640 in Dota 2 is 46% more, than Radeon R6 M340DX.
high / 1080p
−
7−8
ultra / 1080p
4−5
5−6
4K / 2160p
2−3
5−6
low / 720p
9−10
18−20
medium / 1080p
4−5
8−9
The average gaming FPS of Radeon RX 640 in Far Cry 5 is 80% more, than Radeon R6 M340DX.
high / 1080p
−
7−8
ultra / 1080p
7−8
0−1
QHD / 1440p
−
0−1
low / 720p
40−45
60−65
medium / 1080p
8−9
18−20
The average gaming FPS of Radeon RX 640 in Fortnite is 60% more, than Radeon R6 M340DX.
high / 1080p
6−7
10−11
QHD / 1440p
0−1
−
4K / 2160p
−
8−9
low / 720p
12−14
24−27
medium / 1080p
7−8
12−14
The average gaming FPS of Radeon RX 640 in Forza Horizon 4 is 77% more, than Radeon R6 M340DX.
low / 768p
35−40
50−55
medium / 768p
30−35
−
high / 1080p
4−5
10−12
ultra / 1080p
4−5
5−6
QHD / 1440p
0−1
−
medium / 720p
−
45−50
The average gaming FPS of Radeon RX 640 in Grand Theft Auto V is 53% more, than Radeon R6 M340DX.
high / 1080p
2−3
3−4
ultra / 1080p
1−2
1−2
4K / 2160p
0−1
−
low / 720p
4−5
10−11
medium / 1080p
4−5
5−6
The average gaming FPS of Radeon RX 640 in Metro Exodus is 66% more, than Radeon R6 M340DX.
low / 768p
85−90
90−95
high / 1080p
75−80
−
ultra / 1080p
65−70
80−85
The average gaming FPS of Radeon RX 640 in Minecraft is 12% more, than Radeon R6 M340DX.
high / 1080p
14−16
6−7
ultra / 1080p
12−14
2−3
4K / 2160p
−
0−1
low / 720p
20−22
27−30
medium / 1080p
16−18
10−11
The average gaming FPS of Radeon R6 M340DX in PLAYERUNKNOWN'S BATTLEGROUNDS is 33% more, than Radeon RX 640.
QHD / 1440p
0−1
−
low / 720p
4−5
10−12
medium / 1080p
−
9−10
The average gaming FPS of Radeon RX 640 in Red Dead Redemption 2 is 175% more, than Radeon R6 M340DX.
low / 768p
10−12
21−24
medium / 768p
9−10
14−16
high / 1080p
5−6
6−7
ultra / 1080p
4−5
4−5
4K / 2160p
−
3−4
The average gaming FPS of Radeon RX 640 in The Witcher 3: Wild Hunt is 71% more, than Radeon R6 M340DX.
low / 768p
75−80
75−80
medium / 768p
30−35
40−45
ultra / 1080p
10−12
18−20
high / 768p
24−27
35−40
The average gaming FPS of Radeon RX 640 in World of Tanks is 22% more, than Radeon R6 M340DX.
Full Specs
Radeon R6 M340DX
Radeon RX 640
Architecture
GCN
Polaris
Code name
Jet
Polaris 12
Type
Laptop
Laptop
Release date
3 June 2015
12 August 2019
Pipelines
704
640
Core clock speed
1218 MHz
Boost Clock
1030 MHz
1218 MHz
Transistor count
690 million
2,200 million
Manufacturing process technology
28 nm
14 nm
Texture fill rate
24.72
38.98
Memory bus width
64 Bit
Memory clock speed
6000 MHz
Memory bandwidth
112.0 GB/s
Shared memory
-
-
DirectX
12 (11_1)
12 (12_0)
Shader Model
5.1
6.4
OpenGL
4.6
4.6
OpenCL
1.2
2.0
Vulkan
1.2.131
1.2.131
FreeSync
+
Laptop size
medium sized
large
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