Radeon HD 4870 X2 Specs
Radeon HD 4870 X2
|
2x 800 Shaders
2x 1GB GDDR5
750MHz
|
|
FP32
2.4 TFLOPS
|
|
-
-
|
|
Form Factor
PCIe Card
2.0-Slots
|
|
TDP
286W
|
|
Power Connectors
1x 6-Pin
1x 8-Pin
-
-
|
|
GB5 OpenCL - N/A
0%
|
|
GB5 CUDA - N/A
0%
|
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GB5 Metal - N/A
0%
|
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GB5 Vulkan - N/A
0%
|
|
OCT 2020.1 - N/A
0%
|
|
OCT Metal - N/A
0%
|
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Manufacturer
ATI
|
|
Chip Designer
ATI
|
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Architecture
TeraScale 1
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Codename
Wekiva
RV770
Variant
RV770 XT
|
|
Market Segment
Desktop
|
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Release Date
8/12/2008
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|
Foundry
TSMC
-
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Fabrication Node
55nm
-
|
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Die Size
2x 256 mm²
-
|
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Transistor Count
2x 956 Million
-
|
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Transistor Density
3.73M/mm²
-
|
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Form
PCIe Card
|
|
Shading Units
2x 800 Shaders
-
|
|
Texture Mapping Units
2x 40 TMUs
|
|
Render Output Units
2x 16 ROPs
|
|
-
-
|
|
-
-
|
|
-
-
|
|
Compute Units
2x 10 CUs
|
|
-
-
|
|
-
-
|
|
-
-
-
750MHz
|
|
Floating Point
|
|
-
-
|
|
-
-
-
|
|
-
-
-
|
|
-
-
-
|
|
FP32
2.4 TFLOPS
|
|
-
-
|
|
FP64
0.48 TFLOPS
-
|
|
-
-
|
|
-
-
-
|
|
Pixel Fillrate
12 GPixel/s
|
|
-
-
|
|
Texture Fillrate
30 GTexel/s
|
|
-
-
|
|
L1
-
-
16KB/CU
-
|
|
L2
256KB Shared
|
|
-
-
-
|
|
2x 1GB
GDDR5
-
|
|
Bus Width
256Bit
|
|
Clock
900MHz
Transfer Rate
3.6GT/s
Bandwidth
115.2GB/s
|
|
-
-
-
-
-
-
-
-
-
|
|
TDP
286W
|
|
-
-
|
|
-
1x S-Video
-
-
-
-
-
-
2x DVI-I Dual-Link
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
|
|
Max Resolution
2560x1600
|
|
Max Resolution Refresh Rate
60Hz
|
|
Variable Refresh Rate
-
-
-
|
|
Display Stream Compression (DSC)
Not Supported
|
|
Multi Monitor Support
2
|
|
-
-
|
|
No Encoders
-
|
|
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
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|
Model
UVD 2.0
|
|
Codec
-
-
-
-
VC-1
-
-
-
AVC (H.264)
-
-
-
-
-
|
|
Direct X
10
Direct 3D
10_1
|
|
OpenGL
3.3
OpenCL
1.1
-
-
|
|
Shader Model
4.1
-
-
GFX
3
-
-
-
-
|
|
-
-
-
1x Fan
|
|
Power Connectors
-
-
1x 6-Pin
1x 8-Pin
-
-
-
|
|
Slots Required
2.0
PCIe Version
2.0
PCIe Lanes
16
|
|
Multi GPU Support
Supported
Type
2-way CrossFireX
|
|
-
-
-
-
-
-
|
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