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Radeon HD 4870 GDDR3
Specifications of the ATI Radeon HD 4870 GDDR3 GPU
Name / Brand / Architecture
Manufacturer:
ATI
Model:
Radeon HD 4870 GDDR3
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 type:
GDDR3
Memory clock:
900 MHz
Memory clock (effective):
1.8 GHz
Memory interface width:
256-bit
Memory bandwidth:
57.6 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
DisplayPort
HDMI
Power connectors:
2 x 6-pin
Audio input for HDMI:
Yes
Dimensions
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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