ATI Mobility Radeon HD 4870 X2 videocard review

ATI Mobility Radeon HD 4870 X2

Mobility Radeon HD 4870 X2 videocard released by ATI; release date: 9 January 2009. The videocard is designed for laptop-computers and based on TeraScale microarchitecture codenamed M98.

Core clock speed - 550 MHz. Texture fill rate - 2x 22 GTexel / s billion / sec. Pipelines - 1600. Floating-point performance - 2x 880.0 gflops. Manufacturing process technology - 55 nm. Transistors count - 956 million.

Memory type: GDDR3, GDDR5. Maximum RAM amount - 2x 1 GB. Memory bus width - 256 Bit. Memory clock speed - 2800 MHz. Memory bandwidth - 2x 89.6 GB / s. Shared memory - 0.

Specifications (specs)

Essentials

Architecture TeraScale
Code name M98
Launch date 9 January 2009
Place in performance rating not rated
Type Laptop

Technical info

Core clock speed 550 MHz
Floating-point performance 2x 880.0 gflops
Manufacturing process technology 55 nm
Pipelines 1600
Texture fill rate 2x 22 GTexel / s billion / sec
Transistor count 956 million

Video outputs and ports

Display Connectors No outputs

Compatibility, dimensions and requirements

Interface PCIe 2.0 x16
Laptop size large

API support

DirectX 10.1
OpenGL 3.3

Memory

Maximum RAM amount 2x 1 GB
Memory bandwidth 2x 89.6 GB / s
Memory bus width 256 Bit
Memory clock speed 2800 MHz
Memory type GDDR3, GDDR5
Shared memory 0

Technologies

1x Dual-Link/Single-Link DVI
1x Single-Link DVI Support (all display ports have to be supported by the laptop manufacturer)
DisplayPort support up to 2560x1600
HDMI support up to 1920x1080 (both with 7.1 AC3 Audio)
PCI-E 2.0 x16
Powerplay

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