Mobility Radeon HD 3850 vs Mobility Radeon HD 3870 X2
Mobility Radeon HD 3850
Mobility Radeon HD 3870 X2
|
2x 320 Shaders
2x 512MB GDDR3
580MHz
|
2x 320 Shaders
2x 512MB GDDR3
660MHz
|
|
FP32
0.74 TFLOPS
|
FP32
0.84 TFLOPS
|
|
-
-
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-
-
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Form Factor
MXM-II
-
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Form Factor
MXM-II
-
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TDP
30W
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TDP
110W
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-
-
-
-
-
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-
-
-
-
-
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GB5 OpenCL - N/A
0%
|
GB5 OpenCL - N/A
0%
|
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GB5 CUDA - N/A
0%
|
GB5 CUDA - N/A
0%
|
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GB5 Metal - N/A
0%
|
GB5 Metal - N/A
0%
|
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GB5 Vulkan - N/A
0%
|
GB5 Vulkan - N/A
0%
|
|
OCT 2020.1 - N/A
0%
|
OCT 2020.1 - N/A
0%
|
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OCT Metal - N/A
0%
|
OCT Metal - N/A
0%
|
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Manufacturer
ATI
|
Manufacturer
ATI
|
|
Chip Designer
ATI
|
Chip Designer
ATI
|
|
Architecture
TeraScale 1
|
Architecture
TeraScale 1
|
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Family
Radeon HD 3000
|
Family
Radeon HD 3000
|
|
Codename
Boom
RV670
Variant
M88-L/M88-LP
|
Codename
Boom
R680
Variant
M88-LXT
|
|
Market Segment
Laptop
|
Market Segment
Laptop
|
|
Release Date
6/4/2008
|
Release Date
9/1/2008
|
|
Foundry
TSMC
-
|
Foundry
TSMC
-
|
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Fabrication Node
55nm
-
|
Fabrication Node
55nm
-
|
|
Die Size
2x 192 mm²
-
|
Die Size
2x 192 mm²
-
|
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Transistor Count
2x 666 Million
-
|
Transistor Count
2x 666 Million
-
|
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Transistor Density
3.47M/mm²
-
|
Transistor Density
3.47M/mm²
-
|
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Form
MXM-II
|
Form
MXM-II
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|
Shading Units
2x 320 Shaders
-
|
Shading Units
2x 320 Shaders
-
|
|
Texture Mapping Units
2x 16 TMUs
|
Texture Mapping Units
2x 16 TMUs
|
|
Render Output Units
2x 16 ROPs
|
Render Output Units
2x 16 ROPs
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-
-
|
-
-
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-
-
|
-
-
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-
-
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-
-
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Compute Units
2x 4 CUs
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-
-
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-
-
|
-
-
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-
-
|
-
-
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-
-
-
580MHz
|
-
-
-
660MHz
|
|
-
-
|
-
-
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-
-
-
|
-
-
-
|
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-
-
-
|
-
-
-
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-
-
-
|
-
-
-
|
|
FP32
0.74 TFLOPS
|
FP32
0.84 TFLOPS
|
|
-
-
|
-
-
|
|
FP64
0.15 TFLOPS
-
|
-
-
-
|
|
-
-
|
-
-
|
|
-
-
-
|
-
-
-
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Pixel Fillrate
9.28 GPixel/s
|
Pixel Fillrate
10.56 GPixel/s
|
|
-
-
|
-
-
|
|
Texture Fillrate
9.28 GTexel/s
|
Texture Fillrate
10.56 GTexel/s
|
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-
-
|
-
-
|
|
L1
-
-
-
Unknown
|
L1
-
-
-
Unknown
|
|
L2
256KB Shared
|
L2
256KB Shared
|
|
-
-
-
|
-
-
-
|
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2x 512MB
GDDR3
-
|
2x 512MB
GDDR3
-
|
|
-
|
-
|
|
Clock
750MHz
Transfer Rate
1.5GT/s
-
-
|
Clock
850MHz
Transfer Rate
1.7GT/s
-
-
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-
-
-
-
-
-
-
-
-
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-
-
-
-
-
-
-
-
-
|
|
TDP
30W
|
TDP
110W
|
|
-
-
|
-
-
|
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-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
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No Ports
|
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
No Ports
|
|
Max Resolution
2560x1600
|
Max Resolution
2560x1600
|
|
Max Resolution Refresh Rate
60Hz
|
Max Resolution Refresh Rate
60Hz
|
|
Variable Refresh Rate
-
-
-
|
Variable Refresh Rate
-
-
-
|
|
Display Stream Compression (DSC)
Not Supported
|
Display Stream Compression (DSC)
Not Supported
|
|
Multi Monitor Support
2
|
Multi Monitor Support
2
|
|
-
-
|
-
-
|
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No Encoders
-
|
No Encoders
-
|
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-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
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-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
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Model
UVD 1.0
|
Model
UVD 1.0
|
|
Codec
-
-
-
-
VC-1
-
-
-
AVC (H.264)
-
-
-
-
-
|
Codec
-
-
-
-
VC-1
-
-
-
AVC (H.264)
-
-
-
-
-
|
|
Direct X
10
Direct 3D
10_1
|
Direct X
10
Direct 3D
10_1
|
|
OpenGL
3.3
OpenCL
1.1
-
-
|
OpenGL
3.3
OpenCL
1.1
-
-
|
|
Shader Model
4.1
-
-
GFX
3
-
-
-
-
|
Shader Model
4.1
-
-
GFX
3
-
-
-
-
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Not a Card
-
-
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Not a Card
-
-
-
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-
-
-
-
-
-
-
-
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-
-
-
-
-
-
-
-
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-
-
PCIe Version
2.0
PCIe Lanes
16
|
-
-
PCIe Version
2.0
PCIe Lanes
16
|
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-
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