Radeon R9 M390 and GeForce GT 650M SLI - video card comparison

Radeon R9 M390

GeForce GT 650M SLI

Architecture

GCN (2011−2017)

Kepler (2012−2018)

GPU code name

Pitcairn

N13E-GE

Market segment

Laptop

Laptop

Release date

June 2015

March 2012

Bus support

PCIe 3.0

-

Boost clock speed

-

835 MHz

Core clock speed

-

790 MHz

Manufacturing process technology

28 nm

28 nm

Number of transistors

5000 Million

-

Pipelines / CUDA cores

1024

768

Memory type

GDDR5

GDDR5

Maximum RAM amount

2 GB

2x2 GB

Memory bus width

256 Bit

2x 128 Bit

Memory clock speed

-

4000 MHz

Shared memory

-

-

Eyefinity

1

-

DirectX

DirectX® 12

11

CUDA

-

+

Mantle

+

-

OpenCL

Not Listed

-

OpenGL

4.4

-

AppAcceleration

-

-

DualGraphics

1

-

Enduro

-

-

FreeSync

1

-

HD3D

+

-

Optimus

-

+

PowerTune

+

-

Switchable graphics

1

-

TrueAudio

-

-

ZeroCore

+

-