Radeon HD 7850 and Radeon R9 M390 - video card comparison

Radeon HD 7850

Radeon R9 M390

Architecture

GCN 1.0 (2012−2020)

GCN (2011−2017)

GPU code name

Pitcairn

Pitcairn

Market segment

Desktop

Laptop

Release date

March 2012

June 2015

Bus support

PCIe 2.1 x16

PCIe 3.0

Interface

PCIe 3.0 x16

-

Supplementary power connectors

1x 6-pin

-

Boost clock speed

1000 MHz

-

Floating-point performance

1,761 gflops

-

Manufacturing process technology

28 nm

28 nm

Number of transistors

2,800 million

5000 Million

Pipelines / CUDA cores

1024

1024

Power consumption (TDP)

130 Watt

-

Texture fill rate

55.04

-

Memory type

GDDR5

GDDR5

Maximum RAM amount

2 GB

2 GB

Memory bus width

256 Bit

256 Bit

Memory clock speed

1200 MHz

-

Memory bandwidth

153.6 GB/s

-

Shared memory

-

-

Display Connectors

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

-

Eyefinity

1

1

HDMI

+

-

DisplayPort support

-

-

DirectX

12

DirectX® 12

Mantle

-

+

OpenCL

1.2

Not Listed

OpenGL

4.6

4.4

Shader Model

5.1

-

Vulkan

+

-

AppAcceleration

-

-

CrossFire

1

-

DualGraphics

-

1

Enduro

-

-

FreeSync

1

1

HD3D

-

+

PowerTune

-

+

Switchable graphics

-

1

TrueAudio

-

-

ZeroCore

-

+