Official Release of the HD3870X2

Last Updated on Sunday, 27 January 2008 21:48 Sunday, 27 January 2008 20:08

 

Radeon HD3870X2

Radeon HD3870

Radeon HD2900XT

 

Core Code

R680

RV670

R600

Process

55nm

55nm

80nm

Core Transistors

1,300,000,000

666,000,000

700,000,000

Clock Frequency

825MHz

775MHz

740MHz

Memory

GDDR3

GDDR4

GDDR3

Memory Interface

256-bit X2

256-bit

256-bit

Total Memory

512MB X2

512MB

256MB/512MB

Memory Frequency

1800MHz

2252MHz

740MHz

Texture Units

32

16

16

Render Back-Ends

32

16

16

Stream Processors

640

320

320

Processing Power

1 Teraflop

497Gigaflops

495Gigaflops

Shader model

4.1

4.1

4

DirectX

10.1

10.1

10.0

Multi-GPU

CrossfireX

CrossfireX

Crossfire

UVD(HD)

Yes

Yes

No

ATi PowerPlay

Yes

Yes

No

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