Radeon HD 6970 and Radeon R9 M390 - video card comparison

Radeon HD 6970

Radeon R9 M390

Architecture

Terascale 2 (2009−2015)

GCN (2011−2017)

GPU code name

Cayman

Pitcairn

Market segment

Desktop

Laptop

Release date

December 2010

June 2015

Bus support

PCIe 2.0 x16

PCIe 3.0

Interface

PCIe 2.0 x16

-

Supplementary power connectors

1x 6-pin + 1x 8-pin

-

Boost clock speed

880 MHz

-

Floating-point performance

2,703.4 gflops

-

Manufacturing process technology

40 nm

28 nm

Number of transistors

2,640 million

5000 Million

Pipelines / CUDA cores

1536

1024

Power consumption (TDP)

550 Watt

-

Texture fill rate

84.48

-

Memory type

DDR5

GDDR5

Maximum RAM amount

2 GB

2 GB

Memory bus width

256 Bit

256 Bit

Memory clock speed

1375 MHz

-

Shared memory

-

-

Display Connectors

2x DVI, 1x HDMI, 2x mini-DisplayPort

-

Eyefinity

1

1

HDMI

+

-

DisplayPort support

-

-

DirectX

DirectX® 11

DirectX® 12

Mantle

-

+

OpenCL

1.2

Not Listed

OpenGL

4.4

4.4

Shader Model

5.0

-

AppAcceleration

-

-

CrossFire

1

-

DualGraphics

-

1

Enduro

-

-

FreeSync

-

1

HD3D

-

+

PowerTune

-

+

Switchable graphics

-

1

TrueAudio

-

-

ZeroCore

-

+