Tesla K20X and Tesla T4 - video card comparison

Tesla K20X

Tesla T4

Architecture

Kepler (2012−2018)

Turing (2018−2021)

GPU code name

GK110

TU104

Market segment

Workstation

Workstation

Release date

November 2012

September 2018

Interface

PCIe 3.0 x16

PCIe 3.0 x16

Supplementary power connectors

1x 6-pin + 1x 8-pin

None

Boost clock speed

-

1590 MHz

Core clock speed

732 MHz

585 MHz

Floating-point performance

3,935 gflops

-

Manufacturing process technology

28 nm

12 nm

Number of transistors

7,080 million

13,600 million

Pipelines / CUDA cores

2688

2560

Power consumption (TDP)

235 Watt

70 Watt

Texture fill rate

164.0

254.4

Memory type

GDDR5

GDDR6

Maximum RAM amount

6 GB

16 GB

Memory bus width

384 Bit

256 Bit

Memory clock speed

5200 MHz

10000 MHz

Memory bandwidth

249.6 GB/s

320.0 GB/s

Display Connectors

No outputs

No outputs

DirectX

12 (11_0)

12 Ultimate (12_1)

CUDA

3.5

7.5

OpenCL

1.2

1.2

OpenGL

4.6

4.6

Shader Model

5.1

6.5

Vulkan

1.1.126

1.2.131