GeForce GT 640M vs Radeon R7 M275DX
In this comparison between GeForce GT 640M and Radeon R7 M275DX 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 GeForce GT 640M will be the best choice, for others Radeon R7 M275DX will be their preference. Study the comparison tables below and make your choice.
GeForce GT 640M and Radeon R7 M275DX are Laptop Graphics Cards
Note: GeForce GT 640M and Radeon R7 M275DX 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 GeForce GT 640M or Radeon R7 M275DX here:
Main Specs
GeForce GT 640M
Radeon R7 M275DX
Power consumption (TDP)
32 Watt
Interface
PCIe 3.0 x16
Memory type
DDR3\GDDR5
DDR3
Maximum RAM amount
2 GB
Display Connectors
No outputs
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Both cards are used in Laptops.
GeForce GT 640M is build with Kepler architecture, and Radeon R7 M275DX - with GCN.
GeForce GT 640M and Radeon R7 M275DX are manufactured 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
0−1
9−10
ultra / 1080p
0−1
5−6
QHD / 1440p
0−1
0−1
low / 720p
10−12
21−24
medium / 1080p
2−3
10−12
The average gaming FPS of Radeon R7 M275DX in Assassin's Creed Odyssey is 166% more, than GeForce GT 640M.
high / 1080p
−
14−16
ultra / 1080p
3−4
12−14
QHD / 1440p
0−1
0−1
low / 720p
12−14
30−35
medium / 1080p
4−5
16−18
The average gaming FPS of Radeon R7 M275DX in Battlefield 5 is 185% more, than GeForce GT 640M.
low / 768p
50−55
45−50
high / 1080p
45−50
−
QHD / 1440p
0−1
0−1
The average gaming FPS of GeForce GT 640M in Call of Duty: Warzone is 10% more, than Radeon R7 M275DX.
low / 768p
110−120
160−170
medium / 768p
85−90
130−140
ultra / 1080p
35−40
65−70
QHD / 1440p
−
35−40
4K / 2160p
10−11
27−30
high / 768p
55−60
100−110
The average gaming FPS of Radeon R7 M275DX in Counter-Strike: Global Offensive is 63% more, than GeForce GT 640M.
low / 768p
70−75
55−60
ultra / 1080p
12−14
24−27
medium / 1080p
45−50
45−50
The average gaming FPS of GeForce GT 640M in Cyberpunk 2077 is 2% more, than Radeon R7 M275DX.
low / 768p
70−75
90−95
medium / 768p
40−45
70−75
ultra / 1080p
18−20
40−45
The average gaming FPS of Radeon R7 M275DX in Dota 2 is 56% more, than GeForce GT 640M.
high / 1080p
2−3
10−12
ultra / 1080p
2−3
10−11
4K / 2160p
0−1
4−5
low / 720p
9−10
24−27
medium / 1080p
3−4
12−14
The average gaming FPS of Radeon R7 M275DX in Far Cry 5 is 275% more, than GeForce GT 640M.
high / 1080p
−
18−20
ultra / 1080p
5−6
12−14
QHD / 1440p
1−2
−
low / 720p
45−50
70−75
medium / 1080p
7−8
30−35
The average gaming FPS of Radeon R7 M275DX in Fortnite is 95% more, than GeForce GT 640M.
high / 1080p
2−3
16−18
ultra / 1080p
−
14−16
QHD / 1440p
0−1
3−4
low / 720p
14−16
30−35
medium / 1080p
5−6
18−20
The average gaming FPS of Radeon R7 M275DX in Forza Horizon 4 is 214% more, than GeForce GT 640M.
low / 768p
40−45
60−65
medium / 768p
−
55−60
high / 1080p
3−4
18−20
ultra / 1080p
2−3
8−9
QHD / 1440p
0−1
0−1
medium / 720p
30−35
−
The average gaming FPS of Radeon R7 M275DX in Grand Theft Auto V is 87% more, than GeForce GT 640M.
high / 1080p
1−2
6−7
ultra / 1080p
0−1
4−5
4K / 2160p
0−1
1−2
low / 720p
2−3
18−20
medium / 1080p
2−3
8−9
The average gaming FPS of Radeon R7 M275DX in Metro Exodus is 450% more, than GeForce GT 640M.
low / 768p
85−90
100−110
high / 1080p
55−60
95−100
ultra / 1080p
−
85−90
medium / 1080p
−
95−100
The average gaming FPS of Radeon R7 M275DX in Minecraft is 40% more, than GeForce GT 640M.
high / 1080p
14−16
18−20
ultra / 1080p
12−14
14−16
low / 720p
24−27
40−45
medium / 1080p
14−16
18−20
The average gaming FPS of Radeon R7 M275DX in PLAYERUNKNOWN'S BATTLEGROUNDS is 35% more, than GeForce GT 640M.
high / 1080p
−
12−14
ultra / 1080p
3−4
8−9
QHD / 1440p
0−1
0−1
low / 720p
3−4
16−18
medium / 1080p
−
12−14
The average gaming FPS of Radeon R7 M275DX in Red Dead Redemption 2 is 300% more, than GeForce GT 640M.
low / 768p
7−8
30−35
medium / 768p
6−7
21−24
high / 1080p
3−4
12−14
ultra / 1080p
−
7−8
4K / 2160p
0−1
7−8
The average gaming FPS of Radeon R7 M275DX in The Witcher 3: Wild Hunt is 340% more, than GeForce GT 640M.
low / 768p
70−75
90−95
medium / 768p
35−40
50−55
ultra / 1080p
12−14
24−27
high / 768p
27−30
40−45
The average gaming FPS of Radeon R7 M275DX in World of Tanks is 43% more, than GeForce GT 640M.
Full Specs
GeForce GT 640M
Radeon R7 M275DX
Architecture
Kepler
GCN
Code name
N13P-GS
Type
Laptop
Laptop
Release date
22 March 2012
4 June 2014
Pipelines
384
896
Boost Clock
645 MHz
Transistor count
1,270 million
Manufacturing process technology
28 nm
28 nm
Floating-point performance
480.0 gflops
Memory bus width
128bit
Memory clock speed
1800 - 4000 MHz
Shared memory
-
+
DirectX
12 API
DirectX 12, Shader 5.0
Shader Model
5.1
OpenGL
4.5
OpenCL
1.1
Vulkan
1.1.126
CUDA
+
CUDA cores
384
Bus support
PCI Express 2.0, PCI Express 3.0
HDMI
+
HDCP
+
Maximum VGA resolution
Up to 2048x1536
3D Blu-Ray
+
Bitcoin / BTC (SHA256)
18 Mh/s
Laptop size
medium sized
medium sized
Optimus
+
Eyefinity
+
AppAcceleration
+
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