Radeon R9 M390X and GeForce GT 620 OEM - video card comparison

Radeon R9 M390X

GeForce GT 620 OEM

Architecture

GCN 3 (2014−2016)

Fermi 2.0 (2010−2014)

GPU code name

Amethyst (XT) / Tonga

GF119

Market segment

Laptop

Desktop

Release date

June 2015

April 2012

Bus support

PCIe 3.0

-

Interface

PCIe 3.0 x16

PCIe 2.0 x16

Supplementary power connectors

None

None

Core clock speed

723 MHz

810 MHz

Floating-point performance

2,961 gflops

155.5 gflops

Manufacturing process technology

28 nm

40 nm

Number of transistors

5,000 million

292 million

Pipelines / CUDA cores

2048

48

Power consumption (TDP)

100 Watt

30 Watt

Texture fill rate

92.54

6.480

Memory type

GDDR5

DDR3

Maximum RAM amount

4 GB

512 MB

Memory bus width

256 Bit

64 Bit

Memory clock speed

-

1796 MHz

Memory bandwidth

160.0 GB/s

14.37 GB/s

Shared memory

-

-

Display Connectors

No outputs

1x DVI, 1x HDMI, 1x VGA

Eyefinity

1

-

HDMI

-

+

DirectX

DirectX® 12

12 (11_0)

CUDA

-

2.1

Mantle

+

-

OpenCL

Not Listed

1.1

OpenGL

4.4

4.6

Shader Model

6.3

5.1

Vulkan

+

N/A

AppAcceleration

-

-

DualGraphics

1

-

Enduro

-

-

FreeSync

1

-

HD3D

+

-

PowerTune

+

-

Switchable graphics

1

-

TrueAudio

-

-

ZeroCore

+

-