Tesla K20c and RTX A4000 - video card comparison

Tesla K20c

RTX A4000

Architecture

Kepler (2012−2018)

Ampere (2020−2022)

GPU code name

GK110

GA104

Market segment

Workstation

Workstation

Release date

November 2012

April 2021

Interface

PCIe 2.0 x16

PCIe 4.0 x16

Supplementary power connectors

1x 6-pin + 1x 8-pin

1x 6-pin

Boost clock speed

-

1560 MHz

Core clock speed

706 MHz

-

Floating-point performance

3,524 gflops

-

Manufacturing process technology

28 nm

8 nm

Number of transistors

7,080 million

17,400 million

Pipelines / CUDA cores

2496

6144

Power consumption (TDP)

225 Watt

140 Watt

Texture fill rate

146.8

299.5

Memory type

GDDR5

GDDR6

Maximum RAM amount

5 GB

16 GB

Memory bus width

320 Bit

256 Bit

Memory clock speed

5200 MHz

14 GB/s

Memory bandwidth

208.0 GB/s

448.0 GB/s

Display Connectors

No outputs

4x DisplayPort 1.4a

DirectX

12 (11_0)

12 Ultimate (12_2)

CUDA

3.5

8.6

OpenCL

1.2

3.0

OpenGL

4.6

4.6

Shader Model

5.1

6.7

Vulkan

1.1.126

1.3