Radeon HD 7970 and GeForce GTX 950 OEM - video card comparison

Radeon HD 7970

GeForce GTX 950 OEM

Architecture

GCN (2011−2017)

Maxwell 2.0 (2015−2019)

GPU code name

Tahiti XT

GM206S

Market segment

Desktop

Desktop

Release date

December 2011

2016

Bus support

PCIe 2.1 x16

-

Interface

PCIe 3.0 x16

PCIe 3.0 x16

Supplementary power connectors

1x 6-pin + 1x 8-pin

None

Boost clock speed

925 MHz

1203 MHz

Core clock speed

-

937 MHz

Floating-point performance

3,789 gflops

1,946 gflops

Manufacturing process technology

28 nm

28 nm

Number of transistors

4,313 million

2,940 million

Pipelines / CUDA cores

2048

1024

Power consumption (TDP)

300 Watt

-

Texture fill rate

118.4

76.99

Memory type

GDDR5

GDDR5

Maximum RAM amount

6 GB

4 GB

Memory bus width

384 Bit

128 Bit

Memory clock speed

1375 MHz

5 GB/s

Memory bandwidth

264 GB/s

80.19 GB/s

Shared memory

-

-

Display Connectors

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

No outputs

Eyefinity

+

-

HDMI

+

-

DisplayPort support

-

-

DirectX

DirectX® 11

12 (12_1)

CUDA

-

5.2

Mantle

-

-

OpenCL

1.2

3.0

OpenGL

4.6

4.6

Shader Model

5.1

6.7

Vulkan

-

1.3

AppAcceleration

-

-

CrossFire

1

-

Enduro

-

-

FreeSync

1

-

HD3D

-

-

PowerTune

-

-

TrueAudio

-

-

ZeroCore

-

-