GeForce GTX 660 and GeForce 800M - video card comparison
Passmark - benchmark score GeForce GTX 660 vs GeForce 800M
GeForce GTX 660
4119
GeForce 800M
471
GeForce GTX 660
GeForce 800M
Architecture
Kepler (2012−2018)
Fermi 2.0 (2010−2014)
GPU code name
GK106
GF117
Market segment
Desktop
Desktop
Release date
September 2012
March 2014
Bus support
PCI Express 3.0
PCI Express 3.0
Interface
PCIe 3.0 x16
PCIe 2.0 x16
Supplementary power connectors
One 6-pin
-
SLI options
+
-
Boost clock speed
1033 MHz
-
Core clock speed
980 MHz
738 MHz
CUDA cores
960
-
Floating-point performance
1,981 gflops
141.7 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
2,540 million
585 million
Pipelines / CUDA cores
960
48
Power consumption (TDP)
140 Watt
15 Watt
Texture fill rate
78.4 billion/sec
5.904
Memory type
GDDR5
DDR3
Maximum RAM amount
2 GB
1 GB
Memory bus width
192-bit GDDR5
64 Bit
Memory clock speed
6.0 GB/s
1800 MHz
Memory bandwidth
144.2 GB/s
14.4 GB/s
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 (11_0)
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
+
-
GameWorks
-
+
GPU Boost
-
2.0
Optimus
-
+