Radeon HD 7850 and Radeon Sky 900 - video card comparison

Radeon HD 7850

Radeon Sky 900

Architecture

GCN 1.0 (2012−2020)

GCN 1.0 (2012−2020)

GPU code name

Pitcairn

Tahiti

Market segment

Desktop

Desktop

Release date

March 2012

March 2013

Bus support

PCIe 2.1 x16

PCIe 3.0

Interface

PCIe 3.0 x16

PCIe 3.0 x16

Supplementary power connectors

1x 6-pin

2x 8-pin

Boost clock speed

1000 MHz

950 MHz

Core clock speed

-

825 MHz

Floating-point performance

1,761 gflops

2x 3,405 gflops

Manufacturing process technology

28 nm

28 nm

Number of transistors

2,800 million

4,313 million

Pipelines / CUDA cores

1024

3584

Power consumption (TDP)

130 Watt

300 Watt

Texture fill rate

55.04

106.4

Memory type

GDDR5

GDDR5

Maximum RAM amount

2 GB

6 GB

Memory bus width

256 Bit

384 Bit

Memory clock speed

1200 MHz

5000 MHz

Memory bandwidth

153.6 GB/s

480 GB/s

Display Connectors

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

1x DVI, 1x mini-DisplayPort

Eyefinity

1

-

Dual-link DVI support

-

1

HDMI

+

-

DisplayPort support

-

-

DirectX

12

12 (11_1)

Mantle

-

-

OpenCL

1.2

1.2

OpenGL

4.6

4.6

Shader Model

5.1

5.1

Vulkan

+

1.2.131

AppAcceleration

-

-

CrossFire

1

-

Enduro

-

-

FreeSync

1

-

HD3D

-

-

PowerTune

-

-

TrueAudio

-

-

ZeroCore

-

-