Radeon HD 6870 and Curacao - video card comparison

Radeon HD 6870

Curacao

Architecture

Terascale 2 (2009−2015)

GCN 1.0 (2012−2020)

GPU code name

RV940 Barts

Curacao

Market segment

Desktop

Desktop

Release date

October 2010

-

Bus support

PCIe 2.0 x16

-

Interface

PCIe 2.0 x16

-

Supplementary power connectors

2x 6-pin

-

Boost clock speed

900 MHz

-

Floating-point performance

2,016.0 gflops

-

Manufacturing process technology

40 nm

28 nm

Number of transistors

1,700 million

2,800 million

Pipelines / CUDA cores

1120

1280

Power consumption (TDP)

151 Watt

-

Texture fill rate

50.40

-

Memory type

GDDR5

-

Maximum RAM amount

1 GB

-

Memory bus width

256 Bit

-

Memory clock speed

1050 MHz

-

Memory bandwidth

134.4 GB/s

-

Shared memory

-

-

Display Connectors

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

-

Eyefinity

1

-

HDMI

+

-

DisplayPort support

-

-

DirectX

DirectX® 11

12 (11_1)

Mantle

-

-

OpenCL

1.2

2.1 (1.2)

OpenGL

4.4

4.6

Shader Model

5.0

6.5 (5.1)

Vulkan

-

1.2.170

AppAcceleration

-

-

CrossFire

1

-

Enduro

-

-

HD3D

-

-

PowerTune

-

-

TrueAudio

-

-

ZeroCore

-

-