GeForce 940M vs GeForce GTX 660M
Find out if it is worth upgrading your current GPU setup by comparing GeForce 940M and GeForce GTX 660M. Here you can take a closer look at graphics cards specs, such as core clock speed, memory type and size, display connectors, etc. The price, overall benchmark and gaming performances are usually defining factors when it comes to choosing between GeForce 940M and GeForce GTX 660M. Make sure that the graphics card has compatible dimensions and will properly fit in your new or current computer case. Also these graphics cards may have different system power recommendations, so take that into consideration and upgrade your PSU if necessary.
GeForce 940M and GeForce GTX 660M are Laptop Graphics Cards
Note: GeForce 940M and GeForce GTX 660M 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 940M or GeForce GTX 660M here:
Main Specs
GeForce 940M
GeForce GTX 660M
Power consumption (TDP)
75 Watt
50 Watt
Interface
PCIe 3.0 x8
MXM-B (3.0)
Memory type
DDR3
GDDR5
Maximum RAM amount
4 GB
2 GB
Display Connectors
No outputs
No outputs
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GeForce 940M has 50% more power consumption, than GeForce GTX 660M.
GeForce 940M is connected by PCIe 3.0 x8, and GeForce GTX 660M uses MXM-B (3.0) interface.
GeForce 940M has 2 GB more memory, than GeForce GTX 660M.
Both cards are used in Laptops.
GeForce 940M is build with Maxwell architecture, and GeForce GTX 660M - with Kepler.
Core clock speed of GeForce 940M is 237 MHz higher, than GeForce GTX 660M.
GeForce 940M and GeForce GTX 660M are manufactured by 28 nm process technology.
Memory clock speed of GeForce 940M and GeForce GTX 660M is 2000 MHz.
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
6−7
ultra / 1080p
1−2
4−5
QHD / 1440p
0−1
0−1
low / 720p
12−14
16−18
medium / 1080p
4−5
8−9
The average gaming FPS of GeForce GTX 660M in Assassin's Creed Odyssey is 80% more, than GeForce 940M.
high / 1080p
6−7
12−14
ultra / 1080p
4−5
10−11
QHD / 1440p
0−1
0−1
low / 720p
16−18
24−27
medium / 1080p
6−7
12−14
The average gaming FPS of GeForce GTX 660M in Battlefield 5 is 87% more, than GeForce 940M.
low / 768p
50−55
45−50
high / 1080p
40−45
45−50
QHD / 1440p
0−1
0−1
GeForce 940M and GeForce GTX 660M have the same average FPS in Call of Duty: Warzone.
low / 768p
120−130
130−140
medium / 768p
90−95
110−120
ultra / 1080p
40−45
50−55
QHD / 1440p
24−27
27−30
4K / 2160p
18−20
27−30
high / 768p
65−70
80−85
The average gaming FPS of GeForce GTX 660M in Counter-Strike: Global Offensive is 17% more, than GeForce 940M.
low / 768p
70−75
55−60
ultra / 1080p
18−20
18−20
medium / 1080p
45−50
45−50
The average gaming FPS of GeForce 940M in Cyberpunk 2077 is 12% more, than GeForce GTX 660M.
low / 768p
70−75
80−85
medium / 768p
50−55
55−60
ultra / 1080p
24−27
30−35
The average gaming FPS of GeForce GTX 660M in Dota 2 is 14% more, than GeForce 940M.
high / 1080p
3−4
8−9
ultra / 1080p
3−4
7−8
4K / 2160p
2−3
3−4
low / 720p
12−14
18−20
medium / 1080p
4−5
8−9
The average gaming FPS of GeForce GTX 660M in Far Cry 5 is 80% more, than GeForce 940M.
high / 1080p
10−11
14−16
ultra / 1080p
5−6
10−11
QHD / 1440p
2−3
−
low / 720p
50−55
60−65
medium / 1080p
12−14
21−24
The average gaming FPS of GeForce GTX 660M in Fortnite is 35% more, than GeForce 940M.
high / 1080p
7−8
12−14
ultra / 1080p
6−7
10−12
QHD / 1440p
2−3
1−2
low / 720p
20−22
24−27
medium / 1080p
9−10
14−16
The average gaming FPS of GeForce GTX 660M in Forza Horizon 4 is 44% more, than GeForce 940M.
low / 768p
45−50
50−55
medium / 768p
35−40
45−50
high / 1080p
6−7
12−14
ultra / 1080p
3−4
6−7
QHD / 1440p
0−1
0−1
The average gaming FPS of GeForce GTX 660M in Grand Theft Auto V is 26% more, than GeForce 940M.
high / 1080p
1−2
4−5
ultra / 1080p
0−1
3−4
4K / 2160p
0−1
0−1
low / 720p
6−7
12−14
medium / 1080p
3−4
6−7
The average gaming FPS of GeForce GTX 660M in Metro Exodus is 166% more, than GeForce 940M.
low / 768p
90−95
95−100
high / 1080p
85−90
90−95
ultra / 1080p
75−80
80−85
medium / 1080p
90−95
90−95
The average gaming FPS of GeForce GTX 660M in Minecraft is 4% more, than GeForce 940M.
high / 1080p
14−16
16−18
ultra / 1080p
12−14
14−16
low / 720p
24−27
30−35
medium / 1080p
16−18
18−20
The average gaming FPS of GeForce GTX 660M in PLAYERUNKNOWN'S BATTLEGROUNDS is 17% more, than GeForce 940M.
ultra / 1080p
4−5
7−8
QHD / 1440p
0−1
0−1
low / 720p
5−6
12−14
medium / 1080p
−
10−12
The average gaming FPS of GeForce GTX 660M in Red Dead Redemption 2 is 100% more, than GeForce 940M.
low / 768p
14−16
24−27
medium / 768p
10−11
16−18
high / 1080p
5−6
9−10
ultra / 1080p
4−5
6−7
4K / 2160p
1−2
6−7
The average gaming FPS of GeForce GTX 660M in The Witcher 3: Wild Hunt is 85% more, than GeForce 940M.
low / 768p
75−80
85−90
medium / 768p
40−45
45−50
ultra / 1080p
14−16
18−20
high / 768p
30−35
35−40
The average gaming FPS of GeForce GTX 660M in World of Tanks is 14% more, than GeForce 940M.
Full Specs
GeForce 940M
GeForce GTX 660M
Architecture
Maxwell
Kepler
Code name
N16S-GT-S/B
N13E-GE
Type
Laptop
Laptop
Release date
12 March 2015
22 March 2012
Pipelines
384
384
Core clock speed
1072 MHz
835 MHz
Boost Clock
1176 MHz
950 MHz
Transistor count
1,870 million
1,270 million
Manufacturing process technology
28 nm
28 nm
Texture fill rate
28.22
30.4 billion/sec
Floating-point performance
903.2 gflops
729.6 gflops
Memory bus width
64 Bit
128bit
Memory clock speed
2000 MHz
2000 MHz
Memory bandwidth
14.4 GB/s
64.0 GB/s
Shared memory
-
-
DirectX
12 (11_0)
12 API
Shader Model
5.1
5.1
OpenGL
4.5
4.5
OpenCL
1.2
1.1
Vulkan
1.1.126
1.1.126
CUDA
+
+
CUDA cores
384
Bus support
PCI Express 3.0
PCI Express 2.0, PCI Express 3.0
SLI options
+
HDMI
+
HDCP
+
Maximum VGA resolution
Up to 2048x1536
Bitcoin / BTC (SHA256)
101 Mh/s
36 Mh/s
Laptop size
medium sized
large
Optimus
+
+
GPU Boost
2.0
GameWorks
+
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