Tesla K20X and Tesla C2070 - video card comparison
Tesla K20X
Tesla C2070
Architecture
Kepler (2012−2018)
Fermi (2010−2014)
GPU code name
GK110
GF100
Market segment
Workstation
Workstation
Release date
November 2012
July 2011
Interface
PCIe 3.0 x16
PCIe 2.0 x16
Supplementary power connectors
1x 6-pin + 1x 8-pin
1x 8-pin
Core clock speed
732 MHz
574 MHz
Floating-point performance
3,935 gflops
1,030.4 gflops
Manufacturing process technology
28 nm
40 nm
Number of transistors
7,080 million
3,100 million
Pipelines / CUDA cores
2688
448
Power consumption (TDP)
235 Watt
238 Watt
Texture fill rate
164.0
32.14
Memory type
GDDR5
GDDR5
Maximum RAM amount
6 GB
6 GB
Memory bus width
384 Bit
384 Bit
Memory clock speed
5200 MHz
2988 MHz
Memory bandwidth
249.6 GB/s
143.4 GB/s
Display Connectors
No outputs
1x DVI
DirectX
12 (11_0)
12 (11_0)
CUDA
3.5
2.0
OpenCL
1.2
1.1
OpenGL
4.6
4.6
Shader Model
5.1
5.1
Vulkan
1.1.126
N/A