Radeon Pro 555X and Radeon R9 M390 - video card comparison

Radeon Pro 555X

Radeon R9 M390

Architecture

Polaris (2016−2019)

GCN (2011−2017)

GPU code name

Polaris 21

Pitcairn

Market segment

Mobile workstation

Laptop

Release date

June 2017

June 2015

Bus support

-

PCIe 3.0

Interface

PCIe 3.0 x8

-

Supplementary power connectors

None

-

Core clock speed

855 MHz

-

Manufacturing process technology

14 nm

28 nm

Number of transistors

3,000 million

5000 Million

Pipelines / CUDA cores

768

1024

Texture fill rate

43.54

-

Memory type

GDDR5

GDDR5

Maximum RAM amount

4 GB

2 GB

Memory bus width

128 Bit

256 Bit

Memory clock speed

5080 MHz

-

Memory bandwidth

81.6 GB/s

-

Shared memory

-

-

Display Connectors

No outputs

-

Eyefinity

-

1

DirectX

12 (12_0)

DirectX® 12

Mantle

-

+

OpenCL

2.0

Not Listed

OpenGL

4.6

4.4

Shader Model

6.4

-

Vulkan

1.2.131

-

AppAcceleration

-

-

DualGraphics

-

1

Enduro

-

-

FreeSync

+

1

HD3D

-

+

PowerTune

-

+

Switchable graphics

-

1

TrueAudio

-

-

ZeroCore

-

+