Tesla K40st and Tesla T4 - video card comparison

Tesla K40st

Tesla T4

Architecture

Kepler (2012−2018)

Turing (2018−2021)

GPU code name

GK110B

TU104

Market segment

Workstation

Workstation

Release date

November 2013

September 2018

Interface

PCIe 3.0 x16

PCIe 3.0 x16

Supplementary power connectors

-

None

Boost clock speed

-

1590 MHz

Core clock speed

575 MHz

585 MHz

Floating-point performance

4,291 gflops

-

Manufacturing process technology

28 nm

12 nm

Number of transistors

7,080 million

13,600 million

Pipelines / CUDA cores

2880

2560

Power consumption (TDP)

245 Watt

70 Watt

Texture fill rate

138.0

254.4

Memory type

GDDR5

GDDR6

Maximum RAM amount

12 GB

16 GB

Memory bus width

384 Bit

256 Bit

Memory clock speed

6008 MHz

10000 MHz

Memory bandwidth

288.4 GB/s

320.0 GB/s

Display Connectors

No outputs

No outputs

DirectX

12 (11_1)

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