Tesla K20c and Tesla C2070 - video card comparison
Tesla K20c
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 2.0 x16
PCIe 2.0 x16
Supplementary power connectors
1x 6-pin + 1x 8-pin
1x 8-pin
Core clock speed
706 MHz
574 MHz
Floating-point performance
3,524 gflops
1,030.4 gflops
Manufacturing process technology
28 nm
40 nm
Number of transistors
7,080 million
3,100 million
Pipelines / CUDA cores
2496
448
Power consumption (TDP)
225 Watt
238 Watt
Texture fill rate
146.8
32.14
Memory type
GDDR5
GDDR5
Maximum RAM amount
5 GB
6 GB
Memory bus width
320 Bit
384 Bit
Memory clock speed
5200 MHz
2988 MHz
Memory bandwidth
208.0 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