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Radeon HD 4870 GDDR5

Specifications of the ATI Radeon HD 4870 GDDR5 GPU


Released in June 2008, ATI Radeon HD 4870 GDDR5 desktop Graphics Processing Unit is built on Unified Superscalar Shader architecture, and is produced on 55 nm technology. The cards graphics frequency is 750 MHz. It also has 800 stream processors, 16 color ROPs, as well as 40 texture units. The Radeon HD 4870 GDDR5 comes with 2 GB of GDDR5 memory. Because the memory operates at 900 MHz, and utilizes 256 bit bus, the effective memory bandwidth is 115.2 GB/s. The GPU supports PCI Express 2.0 interface, and needs 2 slots on the motherboard. The maximum power draw of this model is 130 Watt.

More detailed specifications of the ATI Radeon HD 4870 GDDR5 graphics card you will find below.

Name / Brand / Architecture

Manufacturer:ATI
Model:Radeon HD 4870 GDDR5
Reference card?:Yes
Target market segment:Desktop
Die name:RV770 XT
Architecture:Unified Superscalar Shader Architecture
Fabrication process:55 nm
Transistors:956 million
Bus interface:PCI-E 2.0 x 16
Launch date:June 2008

Frequency

Graphics clock:750 MHz

Memory specifications

Memory size:512 - 2048 MB
Memory type:GDDR5
Memory clock:900 MHz
Memory clock (effective):3.6 GHz
Memory interface width:256-bit
Memory bandwidth:115.2 GB/s

Cores / Texture

Color ROPs:16
Stream processors:800
Texture units:40
Texture fetches / clock cycle:Up to 160
Textures/pixel:Up to 128
RAMDACs:400 MHz
Decoders:DivX
H.264
MPEG 1
MPEG-2
VC-1

SLI / Crossfire

Maximum crossfire options:4-way

Electric characteristics

Maximum power draw:150 W

Video features

Multi-monitor:Up to 2 displays
Maximum digital resolution:2560 x 1600
Maximum DVI resolution:2560 x 1600
Maximum VGA resolution:2048 x 1536
Anti-Aliasing technologies:24 x CFAA
8 x MSAA
Adaptive MSAA & SSAA
HDMI:Yes
HDMI version:1.3

Performance

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

External connectors

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

Dimensions

Length:9.84 inches (250 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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