Radeon R6 M340DX and GeForce GT 645M - video card comparison

Radeon R6 M340DX

GeForce GT 645M

Architecture

GCN (2011−2017)

Kepler (2012−2018)

GPU code name

Jet

N13P-GS

Market segment

Laptop

Laptop

Release date

June 2015

March 2012

Bus support

-

PCI Express 2.0, PCI Express 3.0

Interface

IGP

PCIe 3.0 x16

Boost clock speed

1030 MHz

-

Core clock speed

-

Up to 710 MHz

CUDA cores

-

384

Floating-point performance

-

544.5 gflops

Manufacturing process technology

28 nm

28 nm

Number of transistors

690 million

1,270 million

Pipelines / CUDA cores

704

384

Power consumption (TDP)

-

32 Watt

Texture fill rate

24.72

22.7 billion/sec

Memory type

DDR3

DDR3\GDDR5

Maximum RAM amount

System Shared

2 GB

Memory bus width

System Shared

128bit

Memory clock speed

System Shared

1800 MHz

Memory bandwidth

-

Up to 64.0 GB/s

Shared memory

-

-

Display Connectors

No outputs

No outputs

HDMI

-

+

HDCP

-

+

Maximum VGA resolution

-

Up to 2048x1536

DirectX

12 (11_1)

12 API

CUDA

-

+

OpenCL

1.2

1.1

OpenGL

4.6

4.5

Shader Model

5.1

5.1

Vulkan

1.2.131

1.1.126

3D Blu-Ray

-

+

Optimus

-

+