GeForce GTX 660M vs GeForce GTX 860M SLI
In this comparison between GeForce GTX 660M and GeForce GTX 860M SLI 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 GTX 660M will be the best choice, for others GeForce GTX 860M SLI will be their preference. Study the comparison tables below and make your choice.
GeForce GTX 660M and GeForce GTX 860M SLI are Laptop Graphics Cards
Note: GeForce GTX 660M and GeForce GTX 860M SLI 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 GTX 660M or GeForce GTX 860M SLI here:
Main Specs
GeForce GTX 660M
GeForce GTX 860M SLI
Power consumption (TDP)
50 Watt
120 Watt
Interface
MXM-B (3.0)
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
2x 4 GB
Display Connectors
No outputs
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GeForce GTX 860M SLI has 140% more power consumption, than GeForce GTX 660M.
GeForce GTX 660M and GeForce GTX 860M SLI have maximum RAM of 2 GB.
Both cards are used in Laptops.
GeForce GTX 660M is build with Kepler architecture, and GeForce GTX 860M SLI - with Maxwell.
Core clock speed of GeForce GTX 860M SLI is 194 MHz higher, than GeForce GTX 660M.
GeForce GTX 660M and GeForce GTX 860M SLI are manufactured by 28 nm process technology.
Memory clock speed of GeForce GTX 860M SLI is 3000 MHz higher, than GeForce GTX 660M.
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
6−7
21−24
ultra / 1080p
4−5
14−16
QHD / 1440p
0−1
8−9
4K / 2160p
−
5−6
low / 720p
16−18
40−45
medium / 1080p
8−9
27−30
The average gaming FPS of GeForce GTX 860M SLI in Assassin's Creed Odyssey is 200% more, than GeForce GTX 660M.
high / 1080p
12−14
35−40
ultra / 1080p
10−11
30−35
QHD / 1440p
0−1
14−16
4K / 2160p
−
9−10
low / 720p
24−27
75−80
medium / 1080p
12−14
40−45
The average gaming FPS of GeForce GTX 860M SLI in Battlefield 5 is 213% more, than GeForce GTX 660M.
low / 768p
45−50
50−55
high / 1080p
45−50
−
QHD / 1440p
0−1
0−1
The average gaming FPS of GeForce GTX 860M SLI in Call of Duty: Warzone is 10% more, than GeForce GTX 660M.
low / 768p
130−140
230−240
medium / 768p
110−120
210−220
ultra / 1080p
50−55
130−140
QHD / 1440p
27−30
100−110
4K / 2160p
27−30
55−60
high / 768p
80−85
170−180
The average gaming FPS of GeForce GTX 860M SLI in Counter-Strike: Global Offensive is 109% more, than GeForce GTX 660M.
low / 768p
55−60
60−65
ultra / 1080p
18−20
55−60
medium / 1080p
45−50
55−60
The average gaming FPS of GeForce GTX 860M SLI in Cyberpunk 2077 is 43% more, than GeForce GTX 660M.
low / 768p
80−85
120−130
medium / 768p
55−60
110−120
ultra / 1080p
30−35
85−90
The average gaming FPS of GeForce GTX 860M SLI in Dota 2 is 91% more, than GeForce GTX 660M.
high / 1080p
8−9
27−30
ultra / 1080p
7−8
24−27
QHD / 1440p
−
21−24
4K / 2160p
3−4
9−10
low / 720p
18−20
55−60
medium / 1080p
8−9
30−33
The average gaming FPS of GeForce GTX 860M SLI in Far Cry 5 is 233% more, than GeForce GTX 660M.
high / 1080p
14−16
35−40
ultra / 1080p
10−11
27−30
QHD / 1440p
−
16−18
low / 720p
60−65
130−140
medium / 1080p
21−24
80−85
The average gaming FPS of GeForce GTX 860M SLI in Fortnite is 159% more, than GeForce GTX 660M.
high / 1080p
12−14
35−40
ultra / 1080p
10−12
27−30
QHD / 1440p
1−2
16−18
4K / 2160p
−
14−16
low / 720p
24−27
75−80
medium / 1080p
14−16
40−45
The average gaming FPS of GeForce GTX 860M SLI in Forza Horizon 4 is 207% more, than GeForce GTX 660M.
low / 768p
50−55
110−120
medium / 768p
45−50
100−105
high / 1080p
12−14
45−50
ultra / 1080p
6−7
18−20
QHD / 1440p
0−1
9−10
The average gaming FPS of GeForce GTX 860M SLI in Grand Theft Auto V is 144% more, than GeForce GTX 660M.
high / 1080p
4−5
14−16
ultra / 1080p
3−4
12−14
QHD / 1440p
−
10−12
4K / 2160p
0−1
3−4
low / 720p
12−14
45−50
medium / 1080p
6−7
20−22
The average gaming FPS of GeForce GTX 860M SLI in Metro Exodus is 300% more, than GeForce GTX 660M.
low / 768p
95−100
120−130
high / 1080p
90−95
−
ultra / 1080p
80−85
−
medium / 1080p
90−95
110−120
The average gaming FPS of GeForce GTX 860M SLI in Minecraft is 26% more, than GeForce GTX 660M.
high / 1080p
16−18
−
ultra / 1080p
14−16
14−16
low / 720p
30−35
75−80
medium / 1080p
18−20
18−20
The average gaming FPS of GeForce GTX 860M SLI in PLAYERUNKNOWN'S BATTLEGROUNDS is 68% more, than GeForce GTX 660M.
high / 1080p
−
16−18
ultra / 1080p
7−8
10−12
QHD / 1440p
0−1
3−4
4K / 2160p
−
2−3
low / 720p
12−14
40−45
medium / 1080p
10−12
21−24
The average gaming FPS of GeForce GTX 860M SLI in Red Dead Redemption 2 is 150% more, than GeForce GTX 660M.
low / 768p
24−27
80−85
medium / 768p
16−18
50−55
high / 1080p
9−10
27−30
ultra / 1080p
6−7
16−18
4K / 2160p
6−7
9−10
The average gaming FPS of GeForce GTX 860M SLI in The Witcher 3: Wild Hunt is 192% more, than GeForce GTX 660M.
low / 768p
85−90
90−95
medium / 768p
45−50
60−65
ultra / 1080p
18−20
40−45
high / 768p
35−40
55−60
The average gaming FPS of GeForce GTX 860M SLI in World of Tanks is 34% more, than GeForce GTX 660M.
Full Specs
GeForce GTX 660M
GeForce GTX 860M SLI
Architecture
Kepler
Maxwell
Code name
N13E-GE
Type
Laptop
Laptop
Release date
22 March 2012
12 March 2014
Pipelines
384
1280
Core clock speed
835 MHz
1029 MHz
Boost Clock
950 MHz
Transistor count
1,270 million
2x 1870 Million
Manufacturing process technology
28 nm
28 nm
Texture fill rate
30.4 billion/sec
Floating-point performance
729.6 gflops
Memory bus width
128bit
2x 128 Bit
Memory clock speed
2000 MHz
5000 MHz
Memory bandwidth
64.0 GB/s
Shared memory
-
-
DirectX
12 API
DirectX 12 (FL 11_0), 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
SLI options
+
+
HDMI
+
HDCP
+
Maximum VGA resolution
Up to 2048x1536
Bitcoin / BTC (SHA256)
36 Mh/s
Laptop size
large
large
Optimus
+
+
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