Radeon HD 7970 and Mars - video card comparison

Radeon HD 7970

Mars

Architecture

GCN (2011−2017)

GCN 1.0 (2012−2020)

GPU code name

Tahiti XT

Mars

Market segment

Desktop

Desktop

Release date

December 2011

-

Bus support

PCIe 2.1 x16

-

Interface

PCIe 3.0 x16

-

Supplementary power connectors

1x 6-pin + 1x 8-pin

-

Boost clock speed

925 MHz

-

Floating-point performance

3,789 gflops

-

Manufacturing process technology

28 nm

28 nm

Number of transistors

4,313 million

950 million

Pipelines / CUDA cores

2048

384

Power consumption (TDP)

300 Watt

-

Texture fill rate

118.4

-

Memory type

GDDR5

-

Maximum RAM amount

6 GB

-

Memory bus width

384 Bit

-

Memory clock speed

1375 MHz

-

Memory bandwidth

264 GB/s

-

Shared memory

-

-

Display Connectors

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

-

Eyefinity

+

-

HDMI

+

-

DisplayPort support

-

-

DirectX

DirectX® 11

12 (11_1)

Mantle

-

-

OpenCL

1.2

2.1 (1.2)

OpenGL

4.6

4.6

Shader Model

5.1

6.5 (5.1)

Vulkan

-

1.2.170

AppAcceleration

-

-

CrossFire

1

-

Enduro

-

-

FreeSync

1

-

HD3D

-

-

PowerTune

-

-

TrueAudio

-

-

ZeroCore

-

-