Mobility Radeon HD 4870 X2

Manufacturer:ATI
Series:Mobility HD 4xxx
Codename:M98 XT
Release date:2009. January 09.
Die count:2
Die size:2x 256 mm2
Fab:55 nm
Transistors:2x 956 millions
Bus interface:PCI-E 2.0 x16

Clock rates

Core clock:550 MHz
Memory clock:700 MHz
Effective memory clock (DDR):5600 MHz

Memory

Memory size:2x 1024 MB
Memory bus type:
https://gamesystemrequirements.com/
GDDR5
Memory bus width:2x 256 bit
Memory bandwidth (maximum):2x 89.6 GB/s

Core units

Unified shader units:2x 800
Texture mapping units (TMU):
https://gamesystemrequirements.com/
2x 40
Render output units (ROP):2x 16
Compute units:2x 10

Supported Technologies:

DirectX:10.1
OpenGL:3.3

Performance

Pixel fillrate:2x 8.8 (GP/s)
Texture fillrate:
https://gamesystemrequirements.com/
2x 22 (GT/s)
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