Tesla P40 and Tesla K20X - video card comparison
Tesla P40
Tesla K20X
Architecture
Pascal (2016−2021)
Kepler (2012−2018)
GPU code name
GP102
GK110
Market segment
Workstation
Workstation
Release date
September 2016
November 2012
Interface
PCIe 3.0 x16
PCIe 3.0 x16
Supplementary power connectors
8-pin EPS
1x 6-pin + 1x 8-pin
Boost clock speed
1531 MHz
-
Core clock speed
1303 MHz
732 MHz
Floating-point performance
11,758 gflops
3,935 gflops
Manufacturing process technology
16 nm
28 nm
Number of transistors
11,800 million
7,080 million
Pipelines / CUDA cores
3840
2688
Power consumption (TDP)
250 Watt
235 Watt
Texture fill rate
367.4
164.0
Memory type
GDDR5
GDDR5
Maximum RAM amount
24 GB
6 GB
Memory bus width
384 Bit
384 Bit
Memory clock speed
7.2 GB/s
5200 MHz
Memory bandwidth
347.1 GB/s
249.6 GB/s
Display Connectors
No outputs
No outputs
DirectX
12 (12_1)
12 (11_0)
CUDA
6.1
3.5
OpenCL
3.0
1.2
OpenGL
4.6
4.6
Shader Model
6.7
5.1
Vulkan
1.3
1.1.126