Radeon HD 6770 and Radeon R9 270 1024SP - video card comparison

Radeon HD 6770

Radeon R9 270 1024SP

Architecture

TeraScale 2 (2009−2015)

GCN 1.0 (2012−2020)

GPU code name

Juniper

Pitcairn

Market segment

Desktop

Desktop

Release date

January 2011

March 2015

Bus support

PCIe 2.0 x16

-

Interface

PCIe 2.0 x16

PCIe 3.0 x16

Supplementary power connectors

1x 6-pin

1x 6-pin

Boost clock speed

900 MHz

925 MHz

Core clock speed

-

900 MHz

Floating-point performance

1,360.0 gflops

1,894 gflops

Manufacturing process technology

40 nm

28 nm

Number of transistors

1,040 million

2,800 million

Pipelines / CUDA cores

800

1024

Power consumption (TDP)

108 Watt

150 Watt

Texture fill rate

34.00

59.20

Memory type

GDDR5

GDDR5

Maximum RAM amount

1 GB

2 GB

Memory bus width

128 Bit

256 Bit

Memory clock speed

1050 MHz

4800 MHz

Memory bandwidth

76.8 GB/s

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

-

-