GeForce GTX 580M and GeForce GTX 660M - video card comparison
Passmark - benchmark score GeForce GTX 580M vs GeForce GTX 660M
GeForce GTX 580M
2136
GeForce GTX 660M
1478
GeForce GTX 580M
GeForce GTX 660M
Architecture
Fermi (2010−2014)
Kepler (2012−2018)
GPU code name
N12E-GTX2
N13E-GE
Market segment
Laptop
Laptop
Release date
June 2011
March 2012
Bus support
PCI-E 2.0
PCI Express 2.0, PCI Express 3.0
Interface
MXM-B (3.0)
MXM-B (3.0)
Supplementary power connectors
None
-
SLI options
+
+
Boost clock speed
-
950 MHz
Core clock speed
620 MHz
835 MHz
CUDA cores
384
384
Floating-point performance
952.3 gflops
729.6 gflops
Manufacturing process technology
40 nm
28 nm
Number of transistors
1,950 million
1,270 million
Pipelines / CUDA cores
384
384
Power consumption (TDP)
100 Watt
50 Watt
Texture fill rate
39.7 billion/sec
30.4 billion/sec
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 MB
2 GB
Memory bus width
256 Bit
128bit
Memory clock speed
1500 MHz
2000 MHz
Memory bandwidth
96.0 GB/s
64.0 GB/s
Shared memory
-
-
Display Connectors
No outputs
No outputs
HDMI
-
+
HDCP
-
+
Maximum VGA resolution
-
Up to 2048x1536
DirectX
12 API
12 API
CUDA
+
+
OpenCL
1.1
1.1
OpenGL
4.5
4.5
Shader Model
5.1
5.1
Vulkan
N/A
1.1.126
3D Blu-Ray
+
-
3D Gaming
+
-
Optimus
+
+