Tesla K8 and Tesla K20c - video card comparison
Tesla K8
Tesla K20c
Architecture
Kepler (2012−2018)
Kepler (2012−2018)
GPU code name
GK104
GK110
Market segment
Workstation
Workstation
Release date
September 2014
November 2012
Interface
PCIe 2.0 x16
PCIe 2.0 x16
Supplementary power connectors
1x 6-pin
1x 6-pin + 1x 8-pin
Boost clock speed
811 MHz
-
Core clock speed
693 MHz
706 MHz
Floating-point performance
2,491 gflops
3,524 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
3,540 million
7,080 million
Pipelines / CUDA cores
1536
2496
Power consumption (TDP)
100 Watt
225 Watt
Texture fill rate
103.8
146.8
Memory type
GDDR5
GDDR5
Maximum RAM amount
8 GB
5 GB
Memory bus width
256 Bit
320 Bit
Memory clock speed
5000 MHz
5200 MHz
Memory bandwidth
160.0 GB/s
208.0 GB/s
Display Connectors
No outputs
No outputs
DirectX
12 (11_0)
12 (11_0)
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