Radeon RX 580 and Radeon R6 M340DX - video card comparison

Radeon RX 580

Radeon R6 M340DX

Architecture

Polaris (2016−2019)

GCN (2011−2017)

GPU code name

Polaris 20

Jet

Market segment

Desktop

Laptop

Release date

April 2017

June 2015

Interface

PCIe 3.0 x16

IGP

Supplementary power connectors

1x 8-pin

Boost clock speed

1340 MHz

1030 MHz

Core clock speed

1257 MHz

Floating-point performance

6,175 gflops

Manufacturing process technology

14 nm

28 nm

Number of transistors

5,700 million

690 million

Pipelines / CUDA cores

2304

704

Power consumption (TDP)

185 Watt

Texture fill rate

193.0

24.72

Memory type

GDDR5

DDR3

Maximum RAM amount

8 GB

System Shared

Memory bus width

256 Bit

System Shared

Memory clock speed

8000 MHz

System Shared

Memory bandwidth

256.0 GB/s

Shared memory

Display Connectors

1x HDMI, 3x DisplayPort

No outputs

HDMI

DirectX

12 (12_0)

12 (11_1)

OpenCL

2.0

1.2

OpenGL

4.6

Shader Model

6.4

5.1

Vulkan

1.2.131