GeForce GTX 660 OEM and GeForce GTX 780 Rev. 2 - video card comparison
GeForce GTX 660 OEM
GeForce GTX 780 Rev. 2
Architecture
Kepler (2012−2018)
Kepler (2012−2018)
GPU code name
GK104
GK110B
Market segment
Desktop
Desktop
Release date
August 2012
September 2013
Interface
PCIe 3.0 x16
PCIe 3.0 x16
Supplementary power connectors
1x 6-pin
1x 6-pin + 1x 8-pin
Boost clock speed
888 MHz
902 MHz
Core clock speed
823 MHz
863 MHz
Floating-point performance
2,046 gflops
4,156 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
3,540 million
7,080 million
Pipelines / CUDA cores
1152
2304
Power consumption (TDP)
130 Watt
250 Watt
Texture fill rate
85.25
173.2
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
3 GB
Memory bus width
256 Bit
384 Bit
Memory clock speed
5600 MHz
6008 MHz
Memory bandwidth
179.2 GB/s
288.4 GB/s
Display Connectors
2x DVI, 1x HDMI, 1x DisplayPort
2x DVI, 1x HDMI, 1x DisplayPort
HDMI
+
+
DirectX
12 (11_0)
12 (11_1)
CUDA
3.0
3.5
OpenCL
1.2
1.2
OpenGL
4.6
4.6
Shader Model
5.1
5.1
Vulkan
1.1.126
1.1.126