GeForce GTX 680MX and Radeon R9 M390 - video card comparison

GeForce GTX 680MX

Radeon R9 M390

Architecture

Kepler (2012−2018)

GCN (2011−2017)

GPU code name

-

Pitcairn

Market segment

Laptop

Laptop

Release date

October 2012

June 2015

Bus support

PCI Express 3.0

PCIe 3.0

SLI options

+

-

Core clock speed

720 MHz

-

CUDA cores

1536

-

Manufacturing process technology

28 nm

28 nm

Number of transistors

3540 Million

5000 Million

Pipelines / CUDA cores

1536

1024

Power consumption (TDP)

122 Watt

-

Texture fill rate

92.2 billion/sec

-

Memory type

GDDR5

GDDR5

Maximum RAM amount

2 GB

2 GB

Memory bus width

256 Bit

256 Bit

Memory clock speed

2500 MHz

-

Memory bandwidth

160 GB/s

-

Shared memory

-

-

Eyefinity

-

1

DirectX

12 API

DirectX® 12

CUDA

+

-

Mantle

-

+

OpenCL

1.1

Not Listed

OpenGL

4.5

4.4

3D Vision

+

-

AppAcceleration

-

-

DualGraphics

-

1

Enduro

-

-

FreeSync

-

1

HD3D

-

+

Optimus

+

-

PowerTune

-

+

Switchable graphics

-

1

TrueAudio

-

-

ZeroCore

-

+