Radeon HD 6450 and Radeon HD 6870M - video card comparison

Radeon HD 6450

Radeon HD 6870M

Architecture

TeraScale 2 (2009−2015)

Terascale 2 (2009−2015)

GPU code name

Caicos

Granville-PRO

Market segment

Desktop

Laptop

Release date

April 2011

January 2011

Bus support

PCIe 2.0 x8

-

Interface

PCIe 2.0 x16

MXM-B (3.0)

Supplementary power connectors

None

-

Boost clock speed

750 MHz

-

Core clock speed

-

675 MHz

Floating-point performance

200.0 gflops

1,080.0 gflops

Manufacturing process technology

40 nm

40 nm

Number of transistors

370 million

1,040 million

Pipelines / CUDA cores

160

800

Power consumption (TDP)

30 Watt

50 Watt

Texture fill rate

5.000

27.00

Memory type

GDDR5

DDR3, GDDR3, GDDR5

Maximum RAM amount

1 GB

1 GB

Memory bus width

64 Bit

128 Bit

Memory clock speed

800 MHz

1000 MHz

Memory bandwidth

25.6 GB/s

64 GB/s

Memory bandwidth

8.5-12.8 GB/x (DDR3) or 25.6-28.8 GB/s (GDDR5)

-

Shared memory

-

-

Display Connectors

1x DVI, 1x HDMI, 1x VGA

No outputs

Eyefinity

1

-

Number of Eyefinity displays

4

-

HDMI

+

-

DisplayPort support

+

-

DirectX

DirectX® 11

11.2 (11_0)

Mantle

-

-

OpenCL

1.2

1.2

OpenGL

4.4

4.4

Shader Model

5.0

5.0

Vulkan

-

N/A

AppAcceleration

-

-

CrossFire

1

-

Enduro

-

-

HD3D

-

-

PowerTune

-

-

TrueAudio

-

-

ZeroCore

-

-