Radeon HD 7970M vs Radeon RX 640
In this comparison between Radeon HD 7970M 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 HD 7970M will be the best choice, for others Radeon RX 640 will be their preference. Study the comparison tables below and make your choice.
Radeon HD 7970M and Radeon RX 640 are Laptop Graphics Cards
Note: Radeon HD 7970M 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 HD 7970M or Radeon RX 640 here:
Main Specs
Radeon HD 7970M
Radeon RX 640
Power consumption (TDP)
100 Watt
50 Watt
Interface
MXM-B (3.0)
PCIe 3.0 x8
Supplementary power connectors
None
None
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
4 GB
Display Connectors
No outputs
1x DVI, 1x HDMI, 1x DisplayPort
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Radeon HD 7970M has 100% more power consumption, than Radeon RX 640.
Radeon HD 7970M is connected by MXM-B (3.0), and Radeon RX 640 uses PCIe 3.0 x8 interface.
Radeon RX 640 has 2 GB more memory, than Radeon HD 7970M.
Both cards are used in Laptops.
Radeon HD 7970M is build with GCN architecture, and Radeon RX 640 - with Polaris.
Core clock speed of Radeon RX 640 is 368 MHz higher, than Radeon HD 7970M.
Radeon HD 7970M is manufactured by 28 nm process technology, and Radeon RX 640 - by 14 nm process technology.
Memory clock speed of Radeon RX 640 is 1200 MHz higher, than Radeon HD 7970M.
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
18−20
5−6
ultra / 1080p
10−12
3−4
QHD / 1440p
5−6
2−3
4K / 2160p
4−5
−
low / 720p
35−40
16−18
medium / 1080p
21−24
7−8
The average gaming FPS of Radeon HD 7970M in Assassin's Creed Odyssey is 171% more, than Radeon RX 640.
high / 1080p
27−30
10−12
ultra / 1080p
24−27
8−9
QHD / 1440p
9−10
0−1
4K / 2160p
6−7
−
low / 720p
60−65
24−27
medium / 1080p
30−35
10−12
The average gaming FPS of Radeon HD 7970M in Battlefield 5 is 164% more, than Radeon RX 640.
low / 768p
50−55
45−50
high / 1080p
−
40−45
QHD / 1440p
0−1
0−1
The average gaming FPS of Radeon HD 7970M in Call of Duty: Warzone is 10% more, than Radeon RX 640.
low / 768p
220−230
130−140
medium / 768p
190−200
100−110
ultra / 1080p
110−120
50−55
QHD / 1440p
75−80
27−30
4K / 2160p
40−45
12−14
high / 768p
160−170
80−85
The average gaming FPS of Radeon HD 7970M in Counter-Strike: Global Offensive is 97% more, than Radeon RX 640.
low / 768p
60−65
50−55
ultra / 1080p
45−50
18−20
medium / 1080p
55−60
45−50
The average gaming FPS of Radeon HD 7970M in Cyberpunk 2077 is 41% more, than Radeon RX 640.
low / 768p
110−120
80−85
medium / 768p
100−110
55−60
ultra / 1080p
75−80
30−35
The average gaming FPS of Radeon HD 7970M in Dota 2 is 73% more, than Radeon RX 640.
high / 1080p
21−24
7−8
ultra / 1080p
20−22
5−6
QHD / 1440p
18−20
−
4K / 2160p
7−8
5−6
low / 720p
45−50
18−20
medium / 1080p
24−27
8−9
The average gaming FPS of Radeon HD 7970M in Far Cry 5 is 166% more, than Radeon RX 640.
high / 1080p
30−33
7−8
ultra / 1080p
21−24
0−1
QHD / 1440p
14−16
0−1
low / 720p
110−120
60−65
medium / 1080p
65−70
18−20
The average gaming FPS of Radeon HD 7970M in Fortnite is 144% more, than Radeon RX 640.
high / 1080p
30−35
10−11
ultra / 1080p
24−27
−
QHD / 1440p
12−14
−
4K / 2160p
12−14
8−9
low / 720p
60−65
24−27
medium / 1080p
35−40
12−14
The average gaming FPS of Radeon HD 7970M in Forza Horizon 4 is 157% more, than Radeon RX 640.
low / 768p
95−100
50−55
medium / 768p
85−90
−
high / 1080p
35−40
10−12
ultra / 1080p
14−16
5−6
QHD / 1440p
5−6
−
medium / 720p
−
45−50
The average gaming FPS of Radeon HD 7970M in Grand Theft Auto V is 117% more, than Radeon RX 640.
high / 1080p
12−14
3−4
ultra / 1080p
9−10
1−2
4K / 2160p
2−3
−
low / 720p
35−40
10−11
medium / 1080p
16−18
5−6
The average gaming FPS of Radeon HD 7970M in Metro Exodus is 280% more, than Radeon RX 640.
low / 768p
110−120
90−95
ultra / 1080p
−
80−85
medium / 1080p
110−120
−
The average gaming FPS of Radeon HD 7970M in Minecraft is 25% more, than Radeon RX 640.
high / 1080p
−
6−7
ultra / 1080p
14−16
2−3
4K / 2160p
−
0−1
low / 720p
65−70
27−30
medium / 1080p
18−20
10−11
The average gaming FPS of Radeon HD 7970M in PLAYERUNKNOWN'S BATTLEGROUNDS is 153% more, than Radeon RX 640.
high / 1080p
14−16
−
ultra / 1080p
9−10
−
QHD / 1440p
0−1
−
low / 720p
35−40
10−12
medium / 1080p
18−20
9−10
The average gaming FPS of Radeon HD 7970M in Red Dead Redemption 2 is 180% more, than Radeon RX 640.
low / 768p
65−70
21−24
medium / 768p
40−45
14−16
high / 1080p
21−24
6−7
ultra / 1080p
12−14
4−5
4K / 2160p
7−8
3−4
The average gaming FPS of Radeon HD 7970M in The Witcher 3: Wild Hunt is 200% more, than Radeon RX 640.
low / 768p
90−95
75−80
medium / 768p
60−65
40−45
ultra / 1080p
40−45
18−20
high / 768p
55−60
35−40
The average gaming FPS of Radeon HD 7970M in World of Tanks is 43% more, than Radeon RX 640.
Full Specs
Radeon HD 7970M
Radeon RX 640
Architecture
GCN
Polaris
Code name
Wimbledon XT
Polaris 12
Type
Laptop
Laptop
Release date
1 May 2012
12 August 2019
Pipelines
1280
640
Core clock speed
850 MHz
1218 MHz
Boost Clock
1218 MHz
Transistor count
2,800 million
2,200 million
Manufacturing process technology
28 nm
14 nm
Texture fill rate
68.00
38.98
Floating-point performance
2,176 gflops
Memory bus width
256 Bit
64 Bit
Memory clock speed
4800 MHz
6000 MHz
Memory bandwidth
153.6 GB/s
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
+
Bitcoin / BTC (SHA256)
254 Mh/s
Laptop size
large
large
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