Radeon HD 6950 and Radeon R9 270 1024SP - video card comparison

Radeon HD 6950

Radeon R9 270 1024SP

Architecture

TeraScale 3 (2010−2013)

GCN 1.0 (2012−2020)

GPU code name

Cayman

Pitcairn

Market segment

Desktop

Desktop

Release date

December 2010

March 2015

Bus support

PCIe 2.0 x16

-

Interface

PCIe 2.0 x16

PCIe 3.0 x16

Supplementary power connectors

2x 6-pin

1x 6-pin

Boost clock speed

800 MHz

925 MHz

Core clock speed

-

900 MHz

Floating-point performance

2,252.8 gflops

1,894 gflops

Manufacturing process technology

40 nm

28 nm

Number of transistors

2,640 million

2,800 million

Pipelines / CUDA cores

1408

1024

Power consumption (TDP)

500 Watt

150 Watt

Texture fill rate

70.40

59.20

Memory type

GDDR5

GDDR5

Maximum RAM amount

2 GB

2 GB

Memory bus width

256 Bit

256 Bit

Memory clock speed

1250 MHz

4800 MHz

Memory bandwidth

-

153.6 GB/s

Display Connectors

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

2x DVI, 1x HDMI, 1x DisplayPort

Eyefinity

1

-

HDMI

+

+

DisplayPort support

-

-

DirectX

DirectX® 11

12 (11_1)

Mantle

-

-

OpenCL

1.2

1.2

OpenGL

4.4

4.6

Shader Model

5.0

5.1

Vulkan

-

1.2.131

AppAcceleration

-

-

CrossFire

1

-

Enduro

-

-

HD3D

-

-

PowerTune

-

-

TrueAudio

-

-

ZeroCore

-

-