Tesla K20s and T400 - video card comparison

Tesla K20s

T400

Architecture

Kepler (2012−2018)

Turing (2018−2021)

GPU code name

GK110

TU117

Market segment

Workstation

Desktop

Release date

February 2013

May 2021

Interface

PCIe 2.0 x16

PCIe 3.0 x16

Supplementary power connectors

-

None

Boost clock speed

-

1425 MHz

Core clock speed

575 MHz

-

Floating-point performance

3,524 gflops

-

Manufacturing process technology

28 nm

12 nm

Number of transistors

7,080 million

4,700 million

Pipelines / CUDA cores

2496

384

Power consumption (TDP)

225 Watt

30 Watt

Texture fill rate

119.6

34.20

Memory type

GDDR5

GDDR6

Maximum RAM amount

5 GB

2 GB

Memory bus width

320 Bit

64 Bit

Memory clock speed

5200 MHz

10 GB/s

Memory bandwidth

208.0 GB/s

80 GB/s

Display Connectors

No outputs

3x mini-DisplayPort

DirectX

12 (11_0)

12 (12_1)

CUDA

3.5

7.5

OpenCL

1.2

3.0

OpenGL

4.6

4.6

Shader Model

5.1

6.6

Vulkan

1.1.126

1.2