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Mobility Radeon HD 3870

Specifications of the ATI Mobility Radeon HD 3870 GPU


ATI Mobility Radeon HD 3870 is a mobile Graphics Processing Unit, that uses Unified Superscalar Shader architecture and is manufactured on 55 nm technological process. The GPU was released in June 2008. The cards graphics frequency is 660 MHz. Furthermore, it has 320 stream processors, 16 color ROPs, together with 16 texture units. The Mobility Radeon HD 3870 comes with 512 MB of GDDR3 memory, utilizing 256 bit bus. The memory is clocked at 850 MHz, which gives 54.4 GB/s memory bandwidth. The GPU supports PCI Express 2.0 interface. The maximum power draw of this model is 55 Watt. To improve ATI Mobility Radeon HD 3870 3D graphics and game performance, it can be paired with another graphics card in crossfire mode.

Please see below for detailed specifications of the ATI Mobility Radeon HD 3870 graphics card.

Name / Brand / Architecture

Manufacturer:ATI
Model:Mobility Radeon HD 3870
mGPU model number:M88-LXT
Reference card?:Yes
Target market segment:Mobile
Die name:RV670
Architecture:Unified Superscalar Shader Architecture
Fabrication process:55 nm
Transistors:666 million
Bus interface:PCI-E 2.0 x 16
Launch date:June 2008

Frequency

Graphics clock:660 MHz

Memory specifications

Memory size:** MB
Memory type:GDDR3
Memory clock:850 MHz
Memory clock (effective):1700 MHz
Memory interface width:**-bit
Memory bandwidth:54.4 GB/s

Cores / Texture

Color ROPs:16
Stream processors:320
Texture units:16
Texture fetches / clock cycle:Up to 80
Textures/pixel:Up to 128
RAMDACs:400 MHz
Decoders:DivX
H.2**
MPEG 1
MPEG-2
VC-1

SLI / Crossfire

Maximum crossfire options:2-way

Electric characteristics

Maximum power draw:55 W

Video features

Multi-monitor:Up to 2 displays
Maximum digital resolution:**0 x 1600
Maximum VGA resolution:2048 x 1536
HDMI:Yes
HDMI version:1.2

Performance

Pixel fill rate:10.56 Gigapixels/s
Texture fill rate:10.56 Gigatexels/s
Single presision compute power:422.4 GFLOPS
Double precision compute power:84.48 GFLOPS

External connectors

Standard display connectors:2 x Dual-Link DVI
DisplayPort
HDMI
Audio input for HDMI:Yes

Other features / Support

Other features:ATI/AMD PowerPlay 7.0
HDCP
High Dynamic Range (HDR) Support
OpenGL support:3.3
DirectX support:10.1
Shader model:4.1
Windows driver support:Windows 7
Windows Vista
Windows XP
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