Radeon HD 6870 and Radeon R5 M445 - video card comparison

Radeon HD 6870

Radeon R5 M445

Architecture

Terascale 2 (2009−2015)

GCN 3.0 (2014−2017)

GPU code name

RV940 Barts

Meso

Market segment

Desktop

Desktop

Release date

October 2010

2016

Bus support

PCIe 2.0 x16

-

Interface

PCIe 2.0 x16

PCIe 3.0 x8

Supplementary power connectors

2x 6-pin

-

Boost clock speed

900 MHz

980 MHz

Core clock speed

-

920 MHz

Floating-point performance

2,016.0 gflops

-

Manufacturing process technology

40 nm

28 nm

Number of transistors

1,700 million

1,550 million

Pipelines / CUDA cores

1120

384

Power consumption (TDP)

151 Watt

-

Texture fill rate

50.40

22.08

Memory type

GDDR5

GDDR5

Maximum RAM amount

1 GB

4 GB

Memory bus width

256 Bit

64 Bit

Memory clock speed

1050 MHz

4 GB/s

Memory bandwidth

134.4 GB/s

32 GB/s

Shared memory

-

-

Display Connectors

2x DVI, 1x HDMI, 2x mini-DisplayPort

Portable Device Dependent

Eyefinity

1

-

HDMI

+

-

DisplayPort support

-

-

DirectX

DirectX® 11

12 (12_0)

Mantle

-

-

OpenCL

1.2

2.1

OpenGL

4.4

4.6

Shader Model

5.0

6.5

Vulkan

-

1.2.170

AppAcceleration

-

-

CrossFire

1

-

Enduro

-

-

HD3D

-

-

PowerTune

-

-

TrueAudio

-

-

ZeroCore

-

-