Radeon R6 Kaveri vs Radeon RX 640
In this comparison between Radeon R6 Kaveri 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 Kaveri 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 Kaveri and Radeon RX 640 are Laptop Graphics Cards
Note: Radeon R6 Kaveri 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 Kaveri or Radeon RX 640 here:
Main Specs
Radeon R6 Kaveri
Radeon RX 640
Power consumption (TDP)
50 Watt
Interface
PCIe 3.0 x8
Supplementary power connectors
None
Memory type
GDDR5
Maximum RAM amount
4 GB
Display Connectors
1x DVI, 1x HDMI, 1x DisplayPort
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Both cards are used in Laptops.
Radeon R6 Kaveri is build with GCN 1.1 architecture, and Radeon RX 640 - with Polaris.
Core clock speed of Radeon RX 640 is 685 MHz higher, than Radeon R6 Kaveri.
Radeon R6 Kaveri 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
0−1
5−6
ultra / 1080p
−
3−4
QHD / 1440p
0−1
2−3
low / 720p
1−2
16−18
medium / 1080p
0−1
7−8
The average gaming FPS of Radeon RX 640 in Assassin's Creed Odyssey is 1600% more, than Radeon R6 Kaveri.
high / 1080p
−
10−12
ultra / 1080p
−
8−9
QHD / 1440p
0−1
0−1
low / 720p
0−1
24−27
medium / 1080p
−
10−12
low / 768p
50−55
45−50
high / 1080p
45−50
40−45
QHD / 1440p
0−1
0−1
The average gaming FPS of Radeon R6 Kaveri in Call of Duty: Warzone is 11% more, than Radeon RX 640.
low / 768p
60−65
130−140
medium / 768p
27−30
100−110
ultra / 1080p
7−8
50−55
QHD / 1440p
−
27−30
4K / 2160p
−
12−14
high / 768p
16−18
80−85
The average gaming FPS of Radeon RX 640 in Counter-Strike: Global Offensive is 232% more, than Radeon R6 Kaveri.
low / 768p
70−75
50−55
ultra / 1080p
0−1
18−20
medium / 1080p
45−50
45−50
The average gaming FPS of Radeon R6 Kaveri in Cyberpunk 2077 is 20% more, than Radeon RX 640.
low / 768p
45−50
80−85
medium / 768p
10−11
55−60
ultra / 1080p
0−1
30−35
The average gaming FPS of Radeon RX 640 in Dota 2 is 141% more, than Radeon R6 Kaveri.
high / 1080p
−
7−8
ultra / 1080p
−
5−6
4K / 2160p
−
5−6
low / 720p
0−1
18−20
medium / 1080p
−
8−9
high / 1080p
−
7−8
ultra / 1080p
−
0−1
QHD / 1440p
−
0−1
low / 720p
21−24
60−65
medium / 1080p
0−1
18−20
The average gaming FPS of Radeon RX 640 in Fortnite is 181% more, than Radeon R6 Kaveri.
high / 1080p
0−1
10−11
QHD / 1440p
0−1
−
4K / 2160p
−
8−9
low / 720p
0−1
24−27
medium / 1080p
0−1
12−14
low / 768p
18−20
50−55
high / 1080p
0−1
10−12
ultra / 1080p
−
5−6
QHD / 1440p
0−1
−
medium / 720p
12−14
45−50
The average gaming FPS of Radeon RX 640 in Grand Theft Auto V is 212% more, than Radeon R6 Kaveri.
high / 1080p
−
3−4
ultra / 1080p
−
1−2
low / 720p
0−1
10−11
medium / 1080p
−
5−6
low / 768p
75−80
90−95
high / 1080p
27−30
−
ultra / 1080p
−
80−85
The average gaming FPS of Radeon RX 640 in Minecraft is 19% more, than Radeon R6 Kaveri.
high / 1080p
−
6−7
ultra / 1080p
−
2−3
4K / 2160p
−
0−1
low / 720p
8−9
27−30
medium / 1080p
−
10−11
The average gaming FPS of Radeon RX 640 in PLAYERUNKNOWN'S BATTLEGROUNDS is 250% more, than Radeon R6 Kaveri.
low / 720p
0−1
10−12
medium / 1080p
−
9−10
low / 768p
0−1
21−24
medium / 768p
−
14−16
high / 1080p
−
6−7
ultra / 1080p
−
4−5
4K / 2160p
−
3−4
low / 768p
45−50
75−80
medium / 768p
14−16
40−45
ultra / 1080p
0−1
18−20
high / 768p
12−14
35−40
The average gaming FPS of Radeon RX 640 in World of Tanks is 108% more, than Radeon R6 Kaveri.
Full Specs
Radeon R6 Kaveri
Radeon RX 640
Architecture
GCN 1.1
Polaris
Code name
Kaveri
Polaris 12
Type
Laptop
Laptop
Release date
4 June 2014
12 August 2019
Pipelines
384
640
Core clock speed
533 MHz
1218 MHz
Boost Clock
654 MHz
1218 MHz
Transistor count
2410 Million
2,200 million
Manufacturing process technology
28 nm
14 nm
Texture fill rate
38.98
Memory bus width
64/128 Bit
64 Bit
Memory clock speed
6000 MHz
Memory bandwidth
112.0 GB/s
Shared memory
+
-
DirectX
DirectX 12 (FL 12_0), Shader 5.0
12 (12_0)
Shader Model
6.4
OpenGL
4.6
OpenCL
2.0
Vulkan
1.2.131
FreeSync
+
Laptop size
medium sized
large
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