GeForce GTX 660 and GeForce GT 555M - video card comparison
Passmark - benchmark score GeForce GTX 660 vs GeForce GT 555M
GeForce GTX 660
4119
GeForce GT 555M
674
GeForce GTX 660
GeForce GT 555M
Architecture
Kepler (2012−2018)
Fermi (2010−2014)
GPU code name
GK106
N12E-GE-B
Market segment
Desktop
Laptop
Release date
September 2012
January 2011
Bus support
PCI Express 3.0
PCI Express 2.0
Interface
PCIe 3.0 x16
PCIe 2.0 x16
Supplementary power connectors
One 6-pin
-
SLI options
+
+
Boost clock speed
1033 MHz
753 MHz
Core clock speed
980 MHz
Up to 753 MHz
CUDA cores
960
Up to 144
Floating-point performance
1,981 gflops
388.8 gflops
Manufacturing process technology
28 nm
40 nm
Number of transistors
2,540 million
1,170 million
Pipelines / CUDA cores
960
144
Power consumption (TDP)
140 Watt
35 Watt
Texture fill rate
78.4 billion/sec
Up to 16.2 billion/sec
Memory type
GDDR5
DDR3\DDR5
Maximum RAM amount
2 GB
3 GB
Memory bus width
192-bit GDDR5
Up to 192 bit/128 Bit
Memory clock speed
6.0 GB/s
Up to 1569 MHz
Memory bandwidth
144.2 GB/s
Up to 50.2 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 API
CUDA
+
+
OpenCL
1.2
1.1
OpenGL
4.3
4.5
Shader Model
5.1
5.1
Vulkan
1.1.126
N/A
3D Blu-Ray
+
+
3D Gaming
+
+
3D Vision
+
-
Optimus
-
+