GeForce GTX 660 and GeForce GTX 870M - video card comparison
Passmark - benchmark score GeForce GTX 660 vs GeForce GTX 870M
GeForce GTX 660
4119
GeForce GTX 870M
3552
GeForce GTX 660
GeForce GTX 870M
Architecture
Kepler (2012−2018)
Kepler (2012−2018)
GPU code name
GK106
N15P-GT
Market segment
Desktop
Laptop
Release date
September 2012
March 2014
Bus support
PCI Express 3.0
PCI Express 2.0, PCI Express 3.0
Interface
PCIe 3.0 x16
MXM-B (3.0)
Supplementary power connectors
One 6-pin
None
SLI options
+
+
Boost clock speed
1033 MHz
967 MHz
Core clock speed
980 MHz
941 MHz
CUDA cores
960
1344
Floating-point performance
1,981 gflops
2,599 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
2,540 million
3,540 million
Pipelines / CUDA cores
960
1344
Power consumption (TDP)
140 Watt
100 Watt
Texture fill rate
78.4 billion/sec
108.3
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
6 GB
Memory bus width
192-bit GDDR5
192 Bit
Memory clock speed
6.0 GB/s
Up to 2500 MHz
Memory bandwidth
144.2 GB/s
120.0 GB/s
Shared memory
-
-
Standard memory configuration
-
GDDR5
Display Connectors
One Dual Link DVI-I, One Dual Link DVI-D, One HDMI, One DisplayPort
No outputs
eDP 1.2 signal support
-
Up to 3840x2160
LVDS signal support
-
Up to 1920x1200
Multi monitor support
4 displays
-
VGA аnalog display support
-
Up to 2048x1536
DisplayPort Multimode (DP++) support
-
Up to 3840x2160
HDCP content protection
-
+
HDMI
+
+
7.1 channel HD audio on HDMI
-
+
HDCP
+
-
Maximum VGA resolution
2048x1536
-
Audio input for HDMI
Internal
-
DirectX
12 (11_0)
12 (11_0)
CUDA
+
+
OpenCL
1.2
1.1
OpenGL
4.3
4.5
Shader Model
5.1
5.1
Vulkan
1.1.126
1.1.126
3D Blu-Ray
+
-
3D Gaming
+
-
3D Vision
+
-
H.264, VC1, MPEG2 1080p video decoder
-
+
Optimus
-
+
TrueHD and DTS-HD audio bitstreaming
-
+