Radeon HD 7770M vs Radeon RX 640
In this comparison between Radeon HD 7770M 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 7770M 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 7770M and Radeon RX 640 are Laptop Graphics Cards
Note: Radeon HD 7770M 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 7770M or Radeon RX 640 here:
Main Specs
Radeon HD 7770M
Radeon RX 640
Power consumption (TDP)
32 Watt
50 Watt
Interface
PCIe 2.0 x16
PCIe 3.0 x8
Supplementary power connectors
None
Memory type
GDDR5
GDDR5
Maximum RAM amount
1 GB
4 GB
Display Connectors
No outputs
1x DVI, 1x HDMI, 1x DisplayPort
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Radeon RX 640 has 56% more power consumption, than Radeon HD 7770M.
Radeon HD 7770M is connected by PCIe 2.0 x16, and Radeon RX 640 uses PCIe 3.0 x8 interface.
Radeon RX 640 has 3 GB more memory, than Radeon HD 7770M.
Both cards are used in Laptops.
Radeon HD 7770M is build with GCN architecture, and Radeon RX 640 - with Polaris.
Core clock speed of Radeon RX 640 is 543 MHz higher, than Radeon HD 7770M.
Radeon HD 7770M is manufactured by 28 nm process technology, and Radeon RX 640 - by 14 nm process technology.
Memory clock speed of Radeon RX 640 is 2000 MHz higher, than Radeon HD 7770M.
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
9−10
5−6
ultra / 1080p
5−6
3−4
QHD / 1440p
0−1
2−3
low / 720p
21−24
16−18
medium / 1080p
10−12
7−8
The average gaming FPS of Radeon HD 7770M in Assassin's Creed Odyssey is 50% more, than Radeon RX 640.
high / 1080p
14−16
10−12
ultra / 1080p
12−14
8−9
QHD / 1440p
0−1
0−1
low / 720p
30−35
24−27
medium / 1080p
16−18
10−12
The average gaming FPS of Radeon HD 7770M in Battlefield 5 is 35% more, than Radeon RX 640.
low / 768p
45−50
45−50
high / 1080p
−
40−45
QHD / 1440p
0−1
0−1
Radeon HD 7770M and Radeon RX 640 have the same average FPS in Call of Duty: Warzone.
low / 768p
160−170
130−140
medium / 768p
130−140
100−110
ultra / 1080p
65−70
50−55
QHD / 1440p
35−40
27−30
4K / 2160p
27−30
12−14
high / 768p
100−110
80−85
The average gaming FPS of Radeon HD 7770M in Counter-Strike: Global Offensive is 28% more, than Radeon RX 640.
low / 768p
55−60
50−55
ultra / 1080p
24−27
18−20
medium / 1080p
45−50
45−50
The average gaming FPS of Radeon HD 7770M in Cyberpunk 2077 is 10% more, than Radeon RX 640.
low / 768p
90−95
80−85
medium / 768p
70−75
55−60
ultra / 1080p
40−45
30−35
The average gaming FPS of Radeon HD 7770M in Dota 2 is 21% more, than Radeon RX 640.
high / 1080p
10−12
7−8
ultra / 1080p
10−11
5−6
4K / 2160p
4−5
5−6
low / 720p
24−27
18−20
medium / 1080p
12−14
8−9
The average gaming FPS of Radeon HD 7770M in Far Cry 5 is 33% more, than Radeon RX 640.
high / 1080p
18−20
7−8
ultra / 1080p
12−14
0−1
QHD / 1440p
−
0−1
low / 720p
70−75
60−65
medium / 1080p
30−35
18−20
The average gaming FPS of Radeon HD 7770M in Fortnite is 41% more, than Radeon RX 640.
high / 1080p
16−18
10−11
ultra / 1080p
14−16
−
QHD / 1440p
3−4
−
4K / 2160p
−
8−9
low / 720p
30−35
24−27
medium / 1080p
18−20
12−14
The average gaming FPS of Radeon HD 7770M in Forza Horizon 4 is 37% more, than Radeon RX 640.
low / 768p
60−65
50−55
medium / 768p
55−60
−
high / 1080p
18−20
10−12
ultra / 1080p
8−9
5−6
QHD / 1440p
0−1
−
medium / 720p
−
45−50
The average gaming FPS of Radeon HD 7770M in Grand Theft Auto V is 30% more, than Radeon RX 640.
high / 1080p
6−7
3−4
ultra / 1080p
4−5
1−2
4K / 2160p
1−2
−
low / 720p
18−20
10−11
medium / 1080p
8−9
5−6
The average gaming FPS of Radeon HD 7770M in Metro Exodus is 80% more, than Radeon RX 640.
low / 768p
100−110
90−95
high / 1080p
95−100
−
ultra / 1080p
85−90
80−85
medium / 1080p
95−100
−
The average gaming FPS of Radeon HD 7770M in Minecraft is 10% more, than Radeon RX 640.
high / 1080p
18−20
6−7
ultra / 1080p
14−16
2−3
4K / 2160p
−
0−1
low / 720p
40−45
27−30
medium / 1080p
18−20
10−11
The average gaming FPS of Radeon HD 7770M in PLAYERUNKNOWN'S BATTLEGROUNDS is 91% more, than Radeon RX 640.
high / 1080p
12−14
−
ultra / 1080p
8−9
−
QHD / 1440p
0−1
−
low / 720p
16−18
10−12
medium / 1080p
12−14
9−10
The average gaming FPS of Radeon HD 7770M in Red Dead Redemption 2 is 50% more, than Radeon RX 640.
low / 768p
30−35
21−24
medium / 768p
21−24
14−16
high / 1080p
12−14
6−7
ultra / 1080p
7−8
4−5
4K / 2160p
7−8
3−4
The average gaming FPS of Radeon HD 7770M in The Witcher 3: Wild Hunt is 60% more, than Radeon RX 640.
low / 768p
90−95
75−80
medium / 768p
50−55
40−45
ultra / 1080p
24−27
18−20
high / 768p
40−45
35−40
The average gaming FPS of Radeon HD 7770M in World of Tanks is 20% more, than Radeon RX 640.
Full Specs
Radeon HD 7770M
Radeon RX 640
Architecture
GCN
Polaris
Code name
Chelsea XT
Polaris 12
Type
Laptop
Laptop
Release date
24 April 2012
12 August 2019
Pipelines
512
640
Core clock speed
675 MHz
1218 MHz
Boost Clock
1218 MHz
Transistor count
1,500 million
2,200 million
Manufacturing process technology
28 nm
14 nm
Texture fill rate
21.60
38.98
Floating-point performance
691.2 gflops
Memory bus width
128 Bit
64 Bit
Memory clock speed
4000 MHz
6000 MHz
Memory bandwidth
64 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
+
Laptop size
medium sized
large
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