GeForce GTX 770 and GeForce GTX 660 Rev. 2 - video card comparison
GeForce GTX 770
GeForce GTX 660 Rev. 2
Architecture
Kepler (2012−2018)
Kepler (2012−2018)
GPU code name
GK104
GK104
Market segment
Desktop
Desktop
Release date
May 2013
September 2014
Bus support
PCI Express 3.0
-
Interface
PCIe 3.0 x16
PCIe 3.0 x16
Minimum recommended system power
600 Watt
-
Supplementary power connectors
One 8-pin and one 6-pin
1x 6-pin
Boost clock speed
1085 MHz
1032 MHz
Core clock speed
1046 MHz
980 MHz
CUDA cores
1536
-
Floating-point performance
3,333 gflops
1,981 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
3,540 million
3,540 million
Pipelines / CUDA cores
1536
960
Power consumption (TDP)
230 Watt
140 Watt
Maximum GPU temperature
98 °C
-
Texture fill rate
134 billion/sec
82.56
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
2 GB
Memory bus width
256 Bit
192 Bit
Memory clock speed
7012 MHz
6008 MHz
Memory bandwidth
224.3 GB/s
144.2 GB/s
Display Connectors
One Dual Link DVI-I, One Dual Link DVI-D, One HDMI, One DisplayPort
2x DVI, 1x HDMI, 1x DisplayPort
Multi monitor support
4 displays
-
HDMI
+
+
HDCP
+
-
Maximum VGA resolution
2048x1536
-
Audio input for HDMI
Internal
-
DirectX
12 (11_0)
12 (11_0)
CUDA
+
3.0
OpenCL
1.2
1.2
OpenGL
4.3
4.6
Shader Model
5.1
5.1
Vulkan
1.1.126
1.1.126
3D Gaming
+
-
3D Vision
+
-
3D Vision Live
+
-
Blu Ray 3D
+
-
PhysX
+
-