GeForce GTX 675M SLI and GeForce GTX 660M - video card comparison
GeForce GTX 675M SLI
GeForce GTX 660M
Architecture
Fermi (2010−2014)
Kepler (2012−2018)
GPU code name
N12E-GTX2
N13E-GE
Market segment
Laptop
Laptop
Release date
January 2011
March 2012
Bus support
-
PCI Express 2.0, PCI Express 3.0
Interface
-
MXM-B (3.0)
SLI options
+
+
Boost clock speed
-
950 MHz
Core clock speed
620 MHz
835 MHz
CUDA cores
-
384
Floating-point performance
-
729.6 gflops
Manufacturing process technology
40 nm
28 nm
Number of transistors
-
1,270 million
Pipelines / CUDA cores
768
384
Power consumption (TDP)
2x 100 Watt
50 Watt
Texture fill rate
-
30.4 billion/sec
Memory type
GDDR5
GDDR5
Maximum RAM amount
-
2 GB
Memory bus width
256 Bit
128bit
Memory clock speed
3000 MHz
2000 MHz
Memory bandwidth
-
64.0 GB/s
Shared memory
-
-
Display Connectors
-
No outputs
HDMI
-
+
HDCP
-
+
Maximum VGA resolution
-
Up to 2048x1536
DirectX
11
12 API
CUDA
+
+
OpenCL
-
1.1
OpenGL
-
4.5
Shader Model
-
5.1
Vulkan
-
1.1.126
Optimus
+
+