GeForce GTX 660 and GeForce 945M - video card comparison
Passmark - benchmark score GeForce GTX 660 vs GeForce 945M
GeForce GTX 660
4119
GeForce 945M
2171
GeForce GTX 660
GeForce 945M
Architecture
Kepler (2012−2018)
Maxwell (2014−2018)
GPU code name
GK106
GM107
Market segment
Desktop
Laptop
Release date
September 2012
March 2015
Bus support
PCI Express 3.0
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
1045 MHz
Core clock speed
980 MHz
928 MHz
CUDA cores
960
-
Floating-point performance
1,981 gflops
953.9 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
2,540 million
1,870 million
Pipelines / CUDA cores
960
512
Power consumption (TDP)
140 Watt
75 Watt
Texture fill rate
78.4 billion/sec
40.80
Memory type
GDDR5
DDR3
Maximum RAM amount
2 GB
4 GB
Memory bus width
192-bit GDDR5
128 Bit
Memory clock speed
6.0 GB/s
2000 MHz
Memory bandwidth
144.2 GB/s
28.8 GB/s
Shared memory
-
-
Display Connectors
One Dual Link DVI-I, One Dual Link DVI-D, One HDMI, One DisplayPort
No outputs
Multi monitor support
4 displays
-
HDMI
+
-
HDCP
+
-
Maximum VGA resolution
2048x1536
-
Audio input for HDMI
Internal
-
DirectX
12 (11_0)
12 (11_0)
CUDA
+
+
OpenCL
1.2
1.2
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
+
-
GameWorks
-
+
GPU Boost
-
2.0
Optimus
-
+