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Radeon HD 4870 X2

Specifications of the ATI Radeon HD 4870 X2 GPU


ATI Radeon HD 4870 X2 Graphics Processing Unit for desktop market segment uses Unified Superscalar Shader architecture, and was launched in August 2008. The GPU is built on 55 nm technological process. The cards graphics frequency is 750 MHz. Furthermore, it has 1600 stream processors, 80 texture units, along with 32 color ROPs. The Radeon HD 4870 X2 incorporates 2 GB of GDDR5 memory. Since the memory runs at 900 MHz, and utilizes 256 bit bus, the effective memory bandwidth is 230.4 GB/s. The GPU supports PCI Express 2.0 interface, and needs 2 motherboard slots. The maximum power consumption of this model is 310 Watt. Game and 3D graphics performance of the ATI Radeon HD 4870 X2 can be improved if it is paired with another card.

More detailed specifications of the ATI Radeon HD 4870 X2 graphics card are available below.

Name / Brand / Architecture

Manufacturer:ATI
Model:Radeon HD 4870 X2
Reference card?:Yes
Target market segment:Desktop
Die name:RV770 XT x 2
Architecture:Unified Superscalar Shader Architecture
Fabrication process:55 nm
Transistors:2 x 956 million
Bus interface:PCI-E 2.0 x 16
Launch date:August 2008

Frequency

Graphics clock:750 MHz

Memory specifications

Memory size:2 x 1 GB
Memory type:GDDR5
Memory clock:900 MHz
Memory clock (effective):3.6 GHz
Memory interface width:2 x **-bit
Memory bandwidth:2 x 115.2 GB/s

Cores / Texture

Color ROPs:2 x 16
Stream processors:2 x 800
Texture units:2 x 40
Texture fetches / clock cycle:Up to 320
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:286 W

Video features

Multi-monitor:Up to 2 displays
Maximum digital resolution:**0 x 1600
Maximum DVI resolution:**0 x 1600
Maximum VGA resolution:2048 x 1536
Anti-Aliasing technologies:24 x CFAA
8 x MSAA
Adaptive MSAA & SSAA
Super AA
HDMI:Yes
HDMI version:1.3

Performance

Pixel fill rate:2 x 12 Gigapixels/s
Texture fill rate:2 x 30 Gigatexels/s
Single presision compute power:2 x 1200 GFLOPS
Double precision compute power:2 x 240 GFLOPS

External connectors

Standard display connectors:2 x Dual-Link DVI-I
S-Video
Power connectors:1 x 6-pin
1 x 8-pin
Audio input for HDMI:Yes

Dimensions

Size (length x height):10.5 inches (267 mm) x 4.376 inches (111 mm)
Width:Dual-Slot

Other features / Support

Other features:ATI/AMD PowerPlay
HDCP
High Dynamic Range (HDR) Support
Open CL support:1.0
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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