Radeon R9 M390 and Radeon R9 M385 - video card comparison

Radeon R9 M390

Radeon R9 M385

Architecture

GCN (2011−2017)

GCN (2011−2017)

GPU code name

Pitcairn

Strato

Market segment

Laptop

Laptop

Release date

June 2015

June 2015

Bus support

PCIe 3.0

PCIe 3.0

Interface

-

PCIe 3.0 x16

Boost clock speed

-

1100 MHz

Floating-point performance

-

1,792 gflops

Manufacturing process technology

28 nm

28 nm

Number of transistors

5000 Million

2,080 million

Pipelines / CUDA cores

1024

896

Texture fill rate

-

56.00

Memory type

GDDR5

GDDR5

Maximum RAM amount

2 GB

4 GB

Memory bus width

256 Bit

128 Bit

Memory clock speed

-

1500 MHz

Memory bandwidth

-

76.8 GB/s

Shared memory

-

-

Display Connectors

-

No outputs

Eyefinity

1

1

DirectX

DirectX® 12

DirectX® 12

Mantle

+

+

OpenCL

Not Listed

Not Listed

OpenGL

4.4

4.4

Shader Model

-

6.3

AppAcceleration

-

-

DualGraphics

1

1

Enduro

-

-

FreeSync

1

1

HD3D

+

+

PowerTune

+

+

Switchable graphics

1

1

TrueAudio

-

+

ZeroCore

+

+