GeForce GTX 660 vs GeForce GTX 680MX
When choosing between GeForce GTX 660 and GeForce GTX 680MX, it is worth examining the specifications of the models in detail. Do they meet the recommended requirements of modern games and software? Storage capacity, form factor, TDP, available ports, warranty and manufacturer support are all important. For example, the size of a PC case can limit the maximum thickness and length of the card. Often, instead of the factory overclocked card and RGB backlight, it is better to choose a reference model with a more efficient GPU. And make sure that your current power supply unit has the correct connection pins (using adapters is not recommended). This GPUs compare tool is meant to help you to choose the best graphics card for your build. Let's find out the difference between GeForce GTX 660 and GeForce GTX 680MX.
GeForce GTX 680MX is a Laptop Graphics Card
Note: GeForce GTX 680MX 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 GTX 680MX here:
Main Specs
GeForce GTX 660
GeForce GTX 680MX
Power consumption (TDP)
140 Watt
122 Watt
Interface
PCIe 3.0 x16
Supplementary power connectors
One 6-pin
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
2 GB
Display Connectors
2x DVI, 1x HDMI, 1x DisplayPort
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GeForce GTX 660 has 14% more power consumption, than GeForce GTX 680MX.
GeForce GTX 660 and GeForce GTX 680MX have maximum RAM of 2 GB.
GeForce GTX 660 is used in Desktops, and GeForce GTX 680MX - in Laptops.
GeForce GTX 660 and GeForce GTX 680MX are build with Kepler architecture.
Core clock speed of GeForce GTX 660 is 260 MHz higher, than GeForce GTX 680MX.
GeForce GTX 660 and GeForce GTX 680MX are manufactured by 28 nm process technology.
Memory clock speed of GeForce GTX 680MX is 2494 MHz higher, than GeForce GTX 660.
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
20−22
21−24
ultra / 1080p
12−14
12−14
QHD / 1440p
6−7
7−8
4K / 2160p
5−6
5−6
low / 720p
40−45
40−45
medium / 1080p
24−27
27−30
GeForce GTX 660 and GeForce GTX 680MX have the same average FPS in Assassin's Creed Odyssey.
high / 1080p
30−35
35−40
ultra / 1080p
27−30
30−33
QHD / 1440p
10−12
14−16
4K / 2160p
8−9
9−10
low / 720p
65−70
70−75
medium / 1080p
35−40
40−45
The average gaming FPS of GeForce GTX 680MX in Battlefield 5 is 13% more, than GeForce GTX 660.
low / 768p
50−55
50−55
QHD / 1440p
0−1
0−1
GeForce GTX 660 and GeForce GTX 680MX have the same average FPS in Call of Duty: Warzone.
low / 768p
230−240
230−240
medium / 768p
200−210
200−210
ultra / 1080p
120−130
120−130
QHD / 1440p
90−95
100−110
4K / 2160p
50−55
55−60
high / 768p
160−170
170−180
The average gaming FPS of GeForce GTX 680MX in Counter-Strike: Global Offensive is 3% more, than GeForce GTX 660.
low / 768p
60−65
60−65
ultra / 1080p
50−55
50−55
medium / 1080p
55−60
55−60
GeForce GTX 660 and GeForce GTX 680MX have the same average FPS in Cyberpunk 2077.
low / 768p
120−130
120−130
medium / 768p
100−110
110−120
ultra / 1080p
80−85
80−85
The average gaming FPS of GeForce GTX 680MX in Dota 2 is 2% more, than GeForce GTX 660.
high / 1080p
24−27
27−30
ultra / 1080p
21−24
24−27
QHD / 1440p
18−20
20−22
4K / 2160p
8−9
8−9
low / 720p
50−55
55−60
medium / 1080p
27−30
27−30
The average gaming FPS of GeForce GTX 680MX in Far Cry 5 is 7% more, than GeForce GTX 660.
high / 1080p
30−35
35−40
ultra / 1080p
24−27
27−30
QHD / 1440p
16−18
16−18
low / 720p
120−130
130−140
medium / 1080p
70−75
75−80
The average gaming FPS of GeForce GTX 680MX in Fortnite is 9% more, than GeForce GTX 660.
high / 1080p
30−35
35−40
ultra / 1080p
24−27
27−30
QHD / 1440p
14−16
16−18
4K / 2160p
12−14
14−16
low / 720p
65−70
70−75
medium / 1080p
35−40
40−45
The average gaming FPS of GeForce GTX 680MX in Forza Horizon 4 is 12% more, than GeForce GTX 660.
low / 768p
100−110
100−110
medium / 768p
90−95
95−100
high / 1080p
40−45
40−45
ultra / 1080p
16−18
18−20
QHD / 1440p
7−8
8−9
The average gaming FPS of GeForce GTX 680MX in Grand Theft Auto V is 3% more, than GeForce GTX 660.
high / 1080p
12−14
14−16
ultra / 1080p
10−11
10−12
QHD / 1440p
10−11
10−12
4K / 2160p
3−4
3−4
low / 720p
40−45
40−45
medium / 1080p
18−20
18−20
The average gaming FPS of GeForce GTX 680MX in Metro Exodus is 6% more, than GeForce GTX 660.
low / 768p
120−130
120−130
medium / 1080p
110−120
110−120
GeForce GTX 660 and GeForce GTX 680MX have the same average FPS in Minecraft.
ultra / 1080p
14−16
14−16
low / 720p
70−75
75−80
medium / 1080p
18−20
18−20
The average gaming FPS of GeForce GTX 680MX in PLAYERUNKNOWN'S BATTLEGROUNDS is 5% more, than GeForce GTX 660.
high / 1080p
14−16
16−18
ultra / 1080p
10−11
10−12
QHD / 1440p
1−2
2−3
4K / 2160p
1−2
2−3
low / 720p
35−40
40−45
medium / 1080p
21−24
21−24
The average gaming FPS of GeForce GTX 680MX in Red Dead Redemption 2 is 14% more, than GeForce GTX 660.
low / 768p
70−75
80−85
medium / 768p
45−50
50−55
high / 1080p
24−27
27−30
ultra / 1080p
14−16
14−16
4K / 2160p
8−9
9−10
The average gaming FPS of GeForce GTX 680MX in The Witcher 3: Wild Hunt is 12% more, than GeForce GTX 660.
low / 768p
90−95
90−95
medium / 768p
60−65
60−65
ultra / 1080p
40−45
40−45
high / 768p
55−60
55−60
GeForce GTX 660 and GeForce GTX 680MX have the same average FPS in World of Tanks.
Full Specs
GeForce GTX 660
GeForce GTX 680MX
Architecture
Kepler
Kepler
Code name
GK106
Type
Desktop
Laptop
Release date
6 September 2012
23 October 2012
Pipelines
960
1536
Core clock speed
980 MHz
720 MHz
Boost Clock
1033 MHz
Transistor count
2,540 million
3540 Million
Manufacturing process technology
28 nm
28 nm
Texture fill rate
78.4 billion/sec
92.2 billion/sec
Floating-point performance
1,981 gflops
Length
9.5" (24.1 cm)
Memory bus width
192-bit GDDR5
256 Bit
Memory clock speed
6.0 GB/s
2500 MHz
Memory bandwidth
144.2 GB/s
160 GB/s
Shared memory
-
DirectX
12 (11_0)
12 API
Shader Model
5.1
OpenGL
4.3
4.5
OpenCL
1.2
1.1
Vulkan
1.1.126
CUDA
+
+
CUDA cores
960
1536
Bus support
PCI Express 3.0
PCI Express 3.0
Height
4.376" (11.1 cm)
SLI options
+
+
Multi monitor support
4 displays
HDMI
+
HDCP
+
Maximum VGA resolution
2048x1536
Audio input for HDMI
Internal
3D Blu-Ray
+
3D Gaming
+
3D Vision
+
+
Bitcoin / BTC (SHA256)
66 Mh/s
57 Mh/s
Laptop size
large
Optimus
+
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