GeForce GTX 660 vs GeForce GTX 860M SLI
In this comparison between GeForce GTX 660 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 660 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 860M SLI is a Laptop Graphics Card
Note: GeForce GTX 860M SLI 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 860M SLI here:
Main Specs
GeForce GTX 660
GeForce GTX 860M SLI
Power consumption (TDP)
140 Watt
120 Watt
Interface
PCIe 3.0 x16
Supplementary power connectors
One 6-pin
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
2x 4 GB
Display Connectors
2x DVI, 1x HDMI, 1x DisplayPort
Check Price
Check Price
GeForce GTX 660 has 16% more power consumption, than GeForce GTX 860M SLI.
GeForce GTX 660 and GeForce GTX 860M SLI have maximum RAM of 2 GB.
GeForce GTX 660 is used in Desktops, and GeForce GTX 860M SLI - in Laptops.
GeForce GTX 660 is build with Kepler architecture, and GeForce GTX 860M SLI - with Maxwell.
Core clock speed of GeForce GTX 860M SLI is 49 MHz higher, than GeForce GTX 660.
GeForce GTX 660 and GeForce GTX 860M SLI are manufactured by 28 nm process technology.
Memory clock speed of GeForce GTX 860M SLI is 4994 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
14−16
QHD / 1440p
6−7
8−9
4K / 2160p
5−6
5−6
low / 720p
40−45
40−45
medium / 1080p
24−27
27−30
The average gaming FPS of GeForce GTX 860M SLI in Assassin's Creed Odyssey is 5% more, than GeForce GTX 660.
high / 1080p
30−35
35−40
ultra / 1080p
27−30
30−35
QHD / 1440p
10−12
14−16
4K / 2160p
8−9
9−10
low / 720p
65−70
75−80
medium / 1080p
35−40
40−45
The average gaming FPS of GeForce GTX 860M SLI in Battlefield 5 is 16% more, than GeForce GTX 660.
low / 768p
50−55
50−55
QHD / 1440p
0−1
0−1
GeForce GTX 660 and GeForce GTX 860M SLI have the same average FPS in Call of Duty: Warzone.
low / 768p
230−240
230−240
medium / 768p
200−210
210−220
ultra / 1080p
120−130
130−140
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 860M SLI in Counter-Strike: Global Offensive is 5% more, than GeForce GTX 660.
low / 768p
60−65
60−65
ultra / 1080p
50−55
55−60
medium / 1080p
55−60
55−60
The average gaming FPS of GeForce GTX 860M SLI in Cyberpunk 2077 is 3% more, than GeForce GTX 660.
low / 768p
120−130
120−130
medium / 768p
100−110
110−120
ultra / 1080p
80−85
85−90
The average gaming FPS of GeForce GTX 860M SLI in Dota 2 is 4% more, than GeForce GTX 660.
high / 1080p
24−27
27−30
ultra / 1080p
21−24
24−27
QHD / 1440p
18−20
21−24
4K / 2160p
8−9
9−10
low / 720p
50−55
55−60
medium / 1080p
27−30
30−33
The average gaming FPS of GeForce GTX 860M SLI in Far Cry 5 is 11% 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
80−85
The average gaming FPS of GeForce GTX 860M SLI in Fortnite is 11% 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
75−80
medium / 1080p
35−40
40−45
The average gaming FPS of GeForce GTX 860M SLI in Forza Horizon 4 is 16% more, than GeForce GTX 660.
low / 768p
100−110
110−120
medium / 768p
90−95
100−105
high / 1080p
40−45
45−50
ultra / 1080p
16−18
18−20
QHD / 1440p
7−8
9−10
The average gaming FPS of GeForce GTX 860M SLI in Grand Theft Auto V is 11% more, than GeForce GTX 660.
high / 1080p
12−14
14−16
ultra / 1080p
10−11
12−14
QHD / 1440p
10−11
10−12
4K / 2160p
3−4
3−4
low / 720p
40−45
45−50
medium / 1080p
18−20
20−22
The average gaming FPS of GeForce GTX 860M SLI in Metro Exodus is 12% more, than GeForce GTX 660.
low / 768p
120−130
120−130
medium / 1080p
110−120
110−120
GeForce GTX 660 and GeForce GTX 860M SLI 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 860M SLI 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
3−4
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 860M SLI 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
16−18
4K / 2160p
8−9
9−10
The average gaming FPS of GeForce GTX 860M SLI in The Witcher 3: Wild Hunt is 15% 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 860M SLI have the same average FPS in World of Tanks.
Full Specs
GeForce GTX 660
GeForce GTX 860M SLI
Architecture
Kepler
Maxwell
Code name
GK106
Type
Desktop
Laptop
Release date
6 September 2012
12 March 2014
Pipelines
960
1280
Core clock speed
980 MHz
1029 MHz
Boost Clock
1033 MHz
Transistor count
2,540 million
2x 1870 Million
Manufacturing process technology
28 nm
28 nm
Texture fill rate
78.4 billion/sec
Floating-point performance
1,981 gflops
Length
9.5" (24.1 cm)
Memory bus width
192-bit GDDR5
2x 128 Bit
Memory clock speed
6.0 GB/s
5000 MHz
Memory bandwidth
144.2 GB/s
Shared memory
-
DirectX
12 (11_0)
DirectX 12 (FL 11_0), Shader 5.0
Shader Model
5.1
OpenGL
4.3
OpenCL
1.2
Vulkan
1.1.126
CUDA
+
+
CUDA cores
960
Bus support
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
Laptop size
large
Optimus
+
Check Price
Check Price
