Radeon HD 7870 and Tahiti - video card comparison

Radeon HD 7870

Tahiti

Architecture

GCN (2011−2017)

GCN 1.0 (2012−2020)

GPU code name

Pitcairn XT

Tahiti

Market segment

Desktop

Desktop

Release date

March 2012

-

Interface

PCIe 3.0 x16

-

Supplementary power connectors

2x 6-pin

-

Core clock speed

1000 MHz

-

Manufacturing process technology

28 nm

28 nm

Number of transistors

2800 Million

4,313 million

Pipelines / CUDA cores

1280

2048

Power consumption (TDP)

175 Watt

-

Texture fill rate

80.00

-

Memory type

GDDR5

-

Maximum RAM amount

2 GB

-

Memory bus width

256 Bit

-

Memory clock speed

4800 MHz

-

Memory bandwidth

153.6 GB/s

-

Shared memory

-

-

Display Connectors

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

-

Eyefinity

+

-

HDMI

+

-

DirectX

12 (11_1)

12 (11_1)

OpenCL

1.2

2.1 (1.2)

OpenGL

4.6

4.6

Shader Model

5.1

6.5 (5.1)

Vulkan

1.2.131

1.2.170