Radeon HD 6450 and Radeon X1800 XT - video card comparison

Radeon HD 6450

Radeon X1800 XT

Architecture

TeraScale 2 (2009−2015)

R500 (2005−2007)

GPU code name

Caicos

R520

Market segment

Desktop

Desktop

Release date

April 2011

October 2005

Bus support

PCIe 2.0 x8

-

Interface

PCIe 2.0 x16

PCIe 1.0 x16

Supplementary power connectors

None

1x 6-pin

Boost clock speed

750 MHz

-

Core clock speed

-

600 MHz

Floating-point performance

200.0 gflops

-

Manufacturing process technology

40 nm

90 nm

Number of transistors

370 million

321 million

Pipelines / CUDA cores

160

-

Power consumption (TDP)

30 Watt

113 Watt

Texture fill rate

5.000

9.600

Memory type

GDDR5

GDDR3

Maximum RAM amount

1 GB

512 MB

Memory bus width

64 Bit

256 Bit

Memory clock speed

800 MHz

1400 MHz

Memory bandwidth

25.6 GB/s

44.8 GB/s

Memory bandwidth

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

-

Display Connectors

1x DVI, 1x HDMI, 1x VGA

2x DVI, 1x S-Video

Eyefinity

1

-

Number of Eyefinity displays

4

-

HDMI

+

-

DisplayPort support

+

-

DirectX

DirectX® 11

9.0c (9_3)

Mantle

-

-

OpenCL

1.2

N/A

OpenGL

4.4

2.0

Shader Model

5.0

3.0

Vulkan

-

N/A

AppAcceleration

-

-

CrossFire

1

-

Enduro

-

-

HD3D

-

-

PowerTune

-

-

TrueAudio

-

-

ZeroCore

-

-