GeForce GTX 775M and Radeon R9 M390 - video card comparison

GeForce GTX 775M

Radeon R9 M390

Architecture

Kepler (2012−2018)

GCN (2011−2017)

GPU code name

N13E-GTX-A2

Pitcairn

Market segment

Laptop

Laptop

Release date

September 2013

June 2015

Bus support

-

PCIe 3.0

SLI options

+

-

Core clock speed

719 MHz

-

Manufacturing process technology

28 nm

28 nm

Number of transistors

3540 Million

5000 Million

Pipelines / CUDA cores

1344

1024

Power consumption (TDP)

100 Watt

-

Memory type

GDDR5

GDDR5

Maximum RAM amount

4 GB

2 GB

Memory bus width

256 Bit

256 Bit

Memory clock speed

3600 MHz

-

Shared memory

-

-

Eyefinity

-

1

DirectX

11

DirectX® 12

CUDA

+

-

Mantle

-

+

OpenCL

-

Not Listed

OpenGL

-

4.4

AppAcceleration

-

-

DualGraphics

-

1

Enduro

-

-

FreeSync

-

1

HD3D

-

+

Optimus

+

-

PowerTune

-

+

Switchable graphics

-

1

TrueAudio

-

-

ZeroCore

-

+