Tesla K20s and Radeon RX 6400 - video card comparison

Tesla K20s

Radeon RX 6400

Architecture

Kepler (2012−2018)

RDNA 2.0 (2020−2022)

GPU code name

GK110

Navi 24

Market segment

Workstation

Desktop

Release date

February 2013

January 2022

Interface

PCIe 2.0 x16

PCIe 4.0 x4

Supplementary power connectors

-

None

Boost clock speed

-

2321 MHz

Core clock speed

575 MHz

-

Floating-point performance

3,524 gflops

-

Manufacturing process technology

28 nm

6 nm

Number of transistors

7,080 million

5,400 million

Pipelines / CUDA cores

2496

768

Power consumption (TDP)

225 Watt

53 Watt

Texture fill rate

119.6

111.4

Memory type

GDDR5

GDDR6

Maximum RAM amount

5 GB

4 GB

Memory bus width

320 Bit

64 Bit

Memory clock speed

5200 MHz

16 GB/s

Memory bandwidth

208.0 GB/s

128.0 GB/s

Display Connectors

No outputs

1x HDMI 2.1, 1x DisplayPort 1.4a

HDMI

-

+

DirectX

12 (11_0)

12 Ultimate (12_2)

CUDA

3.5

-

OpenCL

1.2

2.2

OpenGL

4.6

4.6

Shader Model

5.1

6.6

Vulkan

1.1.126

1.3