GeForce GTX 660 vs GeForce GTX 870M
If you are going to buy a new graphics card and are choosing between GeForce GTX 660 and GeForce GTX 870M, there are a couple of things to consider. Cards with more VRAM in general perform better and allow you to play on higher graphics settings. Size also makes a difference. A model with a large heatsink can occupy up to three expansion slots on a motherboard. Be sure you have enough room in your PC case. When comparing GPUs with different architectures, more processing cores and even higher TFLOPS will not always translate to better performance. To help you decide which GPU you need, we have measured frame rates in a number of popular games. For more on how the GeForce GTX 660 stacks up against GeForce GTX 870M, check out specs charts below.
GeForce GTX 870M is a Laptop Graphics Card
Note: GeForce GTX 870M 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 870M here:
Main Specs
GeForce GTX 660
GeForce GTX 870M
Power consumption (TDP)
140 Watt
100 Watt
Interface
PCIe 3.0 x16
MXM-B (3.0)
Supplementary power connectors
One 6-pin
None
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
6 GB
Display Connectors
2x DVI, 1x HDMI, 1x DisplayPort
No outputs
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GeForce GTX 660 has 40% more power consumption, than GeForce GTX 870M.
GeForce GTX 660 is connected by PCIe 3.0 x16, and GeForce GTX 870M uses MXM-B (3.0) interface.
GeForce GTX 870M has 4 GB more memory, than GeForce GTX 660.
GeForce GTX 660 is used in Desktops, and GeForce GTX 870M - in Laptops.
GeForce GTX 660 and GeForce GTX 870M are build with Kepler architecture.
Core clock speed of GeForce GTX 660 is 39 MHz higher, than GeForce GTX 870M.
GeForce GTX 660 and GeForce GTX 870M are manufactured by 28 nm process technology.
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
16−18
ultra / 1080p
12−14
10−11
QHD / 1440p
6−7
4−5
4K / 2160p
5−6
−
low / 720p
40−45
35−40
medium / 1080p
24−27
21−24
The average gaming FPS of GeForce GTX 660 in Assassin's Creed Odyssey is 16% more, than GeForce GTX 870M.
high / 1080p
30−35
27−30
ultra / 1080p
27−30
24−27
QHD / 1440p
10−12
7−8
4K / 2160p
8−9
6−7
low / 720p
65−70
60−65
medium / 1080p
35−40
30−35
The average gaming FPS of GeForce GTX 660 in Battlefield 5 is 11% more, than GeForce GTX 870M.
low / 768p
50−55
50−55
high / 1080p
−
50−55
QHD / 1440p
0−1
0−1
GeForce GTX 660 and GeForce GTX 870M have the same average FPS in Call of Duty: Warzone.
low / 768p
230−240
220−230
medium / 768p
200−210
190−200
ultra / 1080p
120−130
100−110
QHD / 1440p
90−95
65−70
4K / 2160p
50−55
35−40
high / 768p
160−170
150−160
The average gaming FPS of GeForce GTX 660 in Counter-Strike: Global Offensive is 11% more, than GeForce GTX 870M.
low / 768p
60−65
60−65
ultra / 1080p
50−55
45−50
medium / 1080p
55−60
55−60
The average gaming FPS of GeForce GTX 660 in Cyberpunk 2077 is 3% more, than GeForce GTX 870M.
low / 768p
120−130
110−120
medium / 768p
100−110
100−110
ultra / 1080p
80−85
70−75
The average gaming FPS of GeForce GTX 660 in Dota 2 is 7% more, than GeForce GTX 870M.
high / 1080p
24−27
21−24
ultra / 1080p
21−24
18−20
QHD / 1440p
18−20
18−20
4K / 2160p
8−9
6−7
low / 720p
50−55
45−50
medium / 1080p
27−30
21−24
The average gaming FPS of GeForce GTX 660 in Far Cry 5 is 18% more, than GeForce GTX 870M.
high / 1080p
30−35
27−30
ultra / 1080p
24−27
21−24
QHD / 1440p
16−18
14−16
low / 720p
120−130
110−120
medium / 1080p
70−75
60−65
The average gaming FPS of GeForce GTX 660 in Fortnite is 12% more, than GeForce GTX 870M.
high / 1080p
30−35
30−33
ultra / 1080p
24−27
21−24
QHD / 1440p
14−16
10−12
4K / 2160p
12−14
−
low / 720p
65−70
60−65
medium / 1080p
35−40
30−35
The average gaming FPS of GeForce GTX 660 in Forza Horizon 4 is 9% more, than GeForce GTX 870M.
low / 768p
100−110
95−100
medium / 768p
90−95
85−90
high / 1080p
40−45
35−40
ultra / 1080p
16−18
14−16
QHD / 1440p
7−8
4−5
The average gaming FPS of GeForce GTX 660 in Grand Theft Auto V is 8% more, than GeForce GTX 870M.
high / 1080p
12−14
10−12
ultra / 1080p
10−11
8−9
QHD / 1440p
10−11
−
4K / 2160p
3−4
2−3
low / 720p
40−45
35−40
medium / 1080p
18−20
14−16
The average gaming FPS of GeForce GTX 660 in Metro Exodus is 21% more, than GeForce GTX 870M.
low / 768p
120−130
110−120
medium / 1080p
110−120
110−120
The average gaming FPS of GeForce GTX 660 in Minecraft is 4% more, than GeForce GTX 870M.
ultra / 1080p
14−16
14−16
low / 720p
70−75
65−70
medium / 1080p
18−20
18−20
The average gaming FPS of GeForce GTX 660 in PLAYERUNKNOWN'S BATTLEGROUNDS is 6% more, than GeForce GTX 870M.
high / 1080p
14−16
14−16
ultra / 1080p
10−11
9−10
QHD / 1440p
1−2
0−1
4K / 2160p
1−2
−
low / 720p
35−40
30−35
medium / 1080p
21−24
18−20
The average gaming FPS of GeForce GTX 660 in Red Dead Redemption 2 is 10% more, than GeForce GTX 870M.
low / 768p
70−75
65−70
medium / 768p
45−50
40−45
high / 1080p
24−27
21−24
ultra / 1080p
14−16
12−14
4K / 2160p
8−9
7−8
The average gaming FPS of GeForce GTX 660 in The Witcher 3: Wild Hunt is 10% more, than GeForce GTX 870M.
low / 768p
90−95
90−95
medium / 768p
60−65
60−65
ultra / 1080p
40−45
35−40
high / 768p
55−60
55−60
The average gaming FPS of GeForce GTX 660 in World of Tanks is 1% more, than GeForce GTX 870M.
Full Specs
GeForce GTX 660
GeForce GTX 870M
Architecture
Kepler
Kepler
Code name
GK106
N15P-GT
Type
Desktop
Laptop
Release date
6 September 2012
12 March 2014
Pipelines
960
1344
Core clock speed
980 MHz
941 MHz
Boost Clock
1033 MHz
967 MHz
Transistor count
2,540 million
3,540 million
Manufacturing process technology
28 nm
28 nm
Texture fill rate
78.4 billion/sec
108.3
Floating-point performance
1,981 gflops
2,599 gflops
Length
9.5" (24.1 cm)
Memory bus width
192-bit GDDR5
192 Bit
Memory clock speed
6.0 GB/s
Memory bandwidth
144.2 GB/s
120.0 GB/s
Shared memory
-
DirectX
12 (11_0)
12 (11_0)
Shader Model
5.1
5.1
OpenGL
4.3
4.5
OpenCL
1.2
1.1
Vulkan
1.1.126
1.1.126
CUDA
+
+
CUDA cores
960
1344
Bus support
PCI Express 3.0
PCI Express 2.0, 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
82 Mh/s
Laptop size
large
Standard memory configuration
GDDR5
eDP 1.2 signal support
Up to 3840x2160
LVDS signal support
Up to 1920x1200
DisplayPort Multimode (DP++) support
Up to 3840x2160
HDCP content protection
+
7.1 channel HD audio on HDMI
+
TrueHD and DTS-HD audio bitstreaming
+
H.264, VC1, MPEG2 1080p video decoder
+
Optimus
+
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