GeForce GTX 660M and GeForce 940M - video card comparison
Passmark - benchmark score GeForce GTX 660M vs GeForce 940M
GeForce GTX 660M
1478
GeForce 940M
1156
GeForce GTX 660M
GeForce 940M
Architecture
Kepler (2012−2018)
Maxwell (2014−2018)
GPU code name
N13E-GE
N16S-GT-S/B
Market segment
Laptop
Laptop
Release date
March 2012
March 2015
Bus support
PCI Express 2.0, PCI Express 3.0
PCI Express 3.0
Interface
MXM-B (3.0)
PCIe 3.0 x8
SLI options
+
-
Boost clock speed
950 MHz
1176 MHz
Core clock speed
835 MHz
1072 MHz
CUDA cores
384
-
Floating-point performance
729.6 gflops
903.2 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
1,270 million
1,870 million
Pipelines / CUDA cores
384
384
Power consumption (TDP)
50 Watt
75 Watt
Texture fill rate
30.4 billion/sec
28.22
Memory type
GDDR5
DDR3
Maximum RAM amount
2 GB
4 GB
Memory bus width
128bit
64 Bit
Memory clock speed
2000 MHz
2000 MHz
Memory bandwidth
64.0 GB/s
14.4 GB/s
Shared memory
-
-
Display Connectors
No outputs
No outputs
HDMI
+
-
HDCP
+
-
Maximum VGA resolution
Up to 2048x1536
-
DirectX
12 API
12 (11_0)
CUDA
+
+
OpenCL
1.1
1.2
OpenGL
4.5
4.5
Shader Model
5.1
5.1
Vulkan
1.1.126
1.1.126
GameWorks
-
+
GPU Boost
-
2.0
Optimus
+
+