Radeon R9 390 X2 and RTX A400 - video card comparison

Radeon R9 390 X2

RTX A400

Architecture

GCN 2.0 (2013−2017)

Ampere (2020−2022)

GPU code name

Grenada

GA107

Market segment

Desktop

Desktop

Release date

September 2015

April 2024

Interface

PCIe 3.0 x16

PCIe 4.0 x8

Supplementary power connectors

4x 8-pin

None

Boost clock speed

-

1762 MHz

Core clock speed

1000 MHz

-

Floating-point performance

2x 5,120 gflops

-

Manufacturing process technology

28 nm

8 nm

Number of transistors

6,200 million

8,700 million

Pipelines / CUDA cores

2560

768

Power consumption (TDP)

580 Watt

50 Watt

Texture fill rate

160.0

42.29

Memory type

GDDR5

GDDR6

Maximum RAM amount

8 GB

4 GB

Memory bus width

512 Bit

64 Bit

Memory clock speed

5400 MHz

12 GB/s

Memory bandwidth

345.6 GB/s

96 GB/s

Display Connectors

2x DVI, 1x HDMI, 1x DisplayPort

4x mini-DisplayPort 1.4a

HDMI

+

-

DirectX

12 (12_0)

12 Ultimate (12_2)

CUDA

-

8.6

OpenCL

2.0

3.0

OpenGL

4.6

4.6

Shader Model

6.3

6.7

Vulkan

1.2.131

1.3