GeForce 940M vs GeForce GT 640
In this comparison between GeForce 940M and GeForce GT 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 GeForce 940M will be the best choice, for others GeForce GT 640 will be their preference. Study the comparison tables below and make your choice.
GeForce 940M is a Laptop Graphics Card
Note: GeForce 940M is only used in laptop graphics. It has 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 940M here:
Main Specs
GeForce 940M
GeForce GT 640
Power consumption (TDP)
75 Watt
65 Watt
Interface
PCIe 3.0 x8
PCIe 3.0 x16
Supplementary power connectors
None
Memory type
DDR3
DDR3
Maximum RAM amount
4 GB
2 GB
Display Connectors
No outputs
1x DVI, 1x HDMI, 1x DisplayPort
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GeForce 940M has 15% more power consumption, than GeForce GT 640.
GeForce 940M is connected by PCIe 3.0 x8, and GeForce GT 640 uses PCIe 3.0 x16 interface.
GeForce 940M has 2 GB more memory, than GeForce GT 640.
GeForce 940M is used in Laptops, and GeForce GT 640 - in Desktops.
GeForce 940M is build with Maxwell architecture, and GeForce GT 640 - with Kepler.
Core clock speed of GeForce 940M is 170 MHz higher, than GeForce GT 640.
GeForce 940M and GeForce GT 640 are manufactured by 28 nm process technology.
Memory clock speed of GeForce 940M is 218 MHz higher, than GeForce GT 640.
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
2−3
ultra / 1080p
1−2
1−2
QHD / 1440p
0−1
0−1
low / 720p
12−14
14−16
medium / 1080p
4−5
5−6
The average gaming FPS of GeForce GT 640 in Assassin's Creed Odyssey is 20% more, than GeForce 940M.
high / 1080p
6−7
7−8
ultra / 1080p
4−5
5−6
QHD / 1440p
0−1
0−1
low / 720p
16−18
20−22
medium / 1080p
6−7
7−8
The average gaming FPS of GeForce GT 640 in Battlefield 5 is 25% more, than GeForce 940M.
low / 768p
50−55
50−55
high / 1080p
40−45
35−40
QHD / 1440p
0−1
0−1
The average gaming FPS of GeForce 940M in Call of Duty: Warzone is 4% more, than GeForce GT 640.
low / 768p
120−130
110−120
medium / 768p
90−95
90−95
ultra / 1080p
40−45
45−50
QHD / 1440p
24−27
24−27
4K / 2160p
18−20
18−20
high / 768p
65−70
65−70
The average gaming FPS of GeForce 940M in Counter-Strike: Global Offensive is 1% more, than GeForce GT 640.
low / 768p
70−75
70−75
ultra / 1080p
18−20
21−24
medium / 1080p
45−50
45−50
The average gaming FPS of GeForce GT 640 in Cyberpunk 2077 is 2% more, than GeForce 940M.
low / 768p
70−75
70−75
medium / 768p
50−55
50−55
ultra / 1080p
24−27
27−30
The average gaming FPS of GeForce GT 640 in Dota 2 is 2% more, than GeForce 940M.
high / 1080p
3−4
3−4
ultra / 1080p
3−4
3−4
4K / 2160p
2−3
2−3
low / 720p
12−14
14−16
medium / 1080p
4−5
4−5
GeForce 940M and GeForce GT 640 have the same average FPS in Far Cry 5.
high / 1080p
10−11
10−12
ultra / 1080p
5−6
5−6
QHD / 1440p
2−3
2−3
low / 720p
50−55
50−55
medium / 1080p
12−14
16−18
The average gaming FPS of GeForce GT 640 in Fortnite is 6% more, than GeForce 940M.
high / 1080p
7−8
6−7
ultra / 1080p
6−7
−
QHD / 1440p
2−3
4−5
4K / 2160p
−
2−3
low / 720p
20−22
21−24
medium / 1080p
9−10
9−10
GeForce 940M and GeForce GT 640 have the same average FPS in Forza Horizon 4.
low / 768p
45−50
45−50
medium / 768p
35−40
−
high / 1080p
6−7
7−8
ultra / 1080p
3−4
3−4
QHD / 1440p
0−1
0−1
medium / 720p
−
40−45
GeForce 940M and GeForce GT 640 have the same average FPS in Grand Theft Auto V.
high / 1080p
1−2
2−3
ultra / 1080p
0−1
0−1
4K / 2160p
0−1
0−1
low / 720p
6−7
8−9
medium / 1080p
3−4
4−5
The average gaming FPS of GeForce GT 640 in Metro Exodus is 66% more, than GeForce 940M.
low / 768p
90−95
80−85
high / 1080p
85−90
−
ultra / 1080p
75−80
70−75
medium / 1080p
90−95
−
The average gaming FPS of GeForce 940M in Minecraft is 10% more, than GeForce GT 640.
high / 1080p
14−16
−
ultra / 1080p
12−14
12−14
low / 720p
24−27
27−30
medium / 1080p
16−18
14−16
GeForce 940M and GeForce GT 640 have the same average FPS in PLAYERUNKNOWN'S BATTLEGROUNDS.
high / 1080p
−
6−7
ultra / 1080p
4−5
4−5
QHD / 1440p
0−1
0−1
low / 720p
5−6
7−8
The average gaming FPS of GeForce GT 640 in Red Dead Redemption 2 is 20% more, than GeForce 940M.
low / 768p
14−16
14−16
medium / 768p
10−11
10−11
high / 1080p
5−6
5−6
ultra / 1080p
4−5
4−5
4K / 2160p
1−2
0−1
GeForce 940M and GeForce GT 640 have the same average FPS in The Witcher 3: Wild Hunt.
low / 768p
75−80
70−75
medium / 768p
40−45
35−40
ultra / 1080p
14−16
16−18
high / 768p
30−35
30−35
The average gaming FPS of GeForce 940M in World of Tanks is 5% more, than GeForce GT 640.
Full Specs
GeForce 940M
GeForce GT 640
Architecture
Maxwell
Kepler
Code name
N16S-GT-S/B
GK107
Type
Laptop
Desktop
Release date
12 March 2015
5 June 2012
Pipelines
384
384
Core clock speed
1072 MHz
902 MHz
Boost Clock
1176 MHz
Transistor count
1,870 million
1,270 million
Manufacturing process technology
28 nm
28 nm
Texture fill rate
28.22
28.86
Floating-point performance
903.2 gflops
692.7 gflops
Length
145 mm
Memory bus width
64 Bit
128 Bit
Memory clock speed
2000 MHz
1782 MHz
Memory bandwidth
14.4 GB/s
28.51 GB/s
Shared memory
-
DirectX
12 (11_0)
12 (11_0)
Shader Model
5.1
5.1
OpenGL
4.5
4.6
OpenCL
1.2
1.2
Vulkan
1.1.126
1.1.126
CUDA
+
3.0
Bus support
PCI Express 3.0
Bitcoin / BTC (SHA256)
101 Mh/s
24 Mh/s
Laptop size
medium sized
Optimus
+
GPU Boost
2.0
GameWorks
+
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