GeForce GTX 660M and GeForce GT 620 - video card comparison
Passmark - benchmark score GeForce GTX 660M vs GeForce GT 620
GeForce GTX 660M
1478
GeForce GT 620
388
GeForce GTX 660M
GeForce GT 620
Architecture
Kepler (2012−2018)
Fermi (2010−2014)
GPU code name
N13E-GE
GF108
Market segment
Laptop
Desktop
Release date
March 2012
May 2012
Bus support
PCI Express 2.0, PCI Express 3.0
PCI Express 2.0
Interface
MXM-B (3.0)
PCIe 2.0 x16
Supplementary power connectors
-
None
SLI options
+
-
Boost clock speed
950 MHz
-
Core clock speed
835 MHz
700 MHz
CUDA cores
384
96
Floating-point performance
729.6 gflops
268.8 gflops
Manufacturing process technology
28 nm
40 nm
Number of transistors
1,270 million
585 million
Pipelines / CUDA cores
384
96
Power consumption (TDP)
50 Watt
49 Watt
Maximum GPU temperature
-
98 °C
Texture fill rate
30.4 billion/sec
11.2 billion/sec
Memory type
GDDR5
DDR3
Maximum RAM amount
2 GB
1 GB
Memory bus width
128bit
64 Bit
Memory clock speed
2000 MHz
1.8 GB/s
Memory bandwidth
64.0 GB/s
14.4 GB/s
Shared memory
-
-
Display Connectors
No outputs
Dual Link DVI-I, HDMI, VGA
Multi monitor support
-
+
HDMI
+
+
HDCP
+
+
Maximum VGA resolution
Up to 2048x1536
2048x1536
Audio input for HDMI
-
Internal
DirectX
12 API
12 (11_0)
CUDA
+
+
OpenCL
1.1
1.1
OpenGL
4.5
4.2
Shader Model
5.1
5.1
Vulkan
1.1.126
N/A
3D Blu-Ray
-
+
Optimus
+
-