Mobility Radeon HD 3850 X2 vs Mobility Radeon HD 3870 X2
Mobility Radeon HD 3850 X2
Mobility Radeon HD 3870 X2
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2x 320 Shaders
2x 512MB GDDR3
580MHz
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2x 320 Shaders
2x 512MB GDDR3
660MHz
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FP32
0.74 TFLOPS
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FP32
0.84 TFLOPS
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-
-
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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
55W
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TDP
110W
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-
-
-
-
-
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-
-
-
-
-
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GB5 OpenCL - N/A
0%
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GB5 OpenCL - N/A
0%
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GB5 CUDA - N/A
0%
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GB5 CUDA - N/A
0%
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GB5 Metal - N/A
0%
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GB5 Metal - N/A
0%
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GB5 Vulkan - N/A
0%
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GB5 Vulkan - N/A
0%
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OCT 2020.1 - N/A
0%
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OCT 2020.1 - N/A
0%
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OCT Metal - N/A
0%
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OCT Metal - N/A
0%
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Manufacturer
ATI
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Manufacturer
ATI
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Chip Designer
ATI
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Chip Designer
ATI
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Architecture
TeraScale 1
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Architecture
TeraScale 1
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Family
Radeon HD 3000
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Family
Radeon HD 3000
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Codename
Boom
R680
Variant
M88-L/M88-LP
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Codename
Boom
R680
Variant
M88-LXT
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Market Segment
Laptop
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Market Segment
Laptop
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Release Date
6/5/2008
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Release Date
9/1/2008
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Foundry
TSMC
-
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Foundry
TSMC
-
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Fabrication Node
55nm
-
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Fabrication Node
55nm
-
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Die Size
2x 192 mm²
-
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Die Size
2x 192 mm²
-
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Transistor Count
2x 666 Million
-
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Transistor Count
2x 666 Million
-
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Transistor Density
3.47M/mm²
-
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Transistor Density
3.47M/mm²
-
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Form
MXM-II
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Form
MXM-II
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Shading Units
2x 320 Shaders
-
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Shading Units
2x 320 Shaders
-
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Texture Mapping Units
2x 16 TMUs
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Texture Mapping Units
2x 16 TMUs
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Render Output Units
2x 16 ROPs
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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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-
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-
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-
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-
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-
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-
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-
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-
-
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580MHz
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-
-
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660MHz
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-
-
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-
-
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-
-
-
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-
-
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-
-
-
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-
-
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-
-
-
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-
-
-
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FP32
0.74 TFLOPS
|
FP32
0.84 TFLOPS
|
|
-
-
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-
-
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-
-
-
|
-
-
-
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-
-
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-
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-
-
-
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-
-
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Pixel Fillrate
9.28 GPixel/s
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Pixel Fillrate
10.56 GPixel/s
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-
-
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-
-
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Texture Fillrate
9.28 GTexel/s
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Texture Fillrate
10.56 GTexel/s
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-
-
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-
-
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L1
-
-
-
Unknown
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L1
-
-
-
Unknown
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L2
256KB Shared
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L2
256KB Shared
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-
-
-
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-
-
-
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2x 512MB
GDDR3
-
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2x 512MB
GDDR3
-
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-
|
-
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Clock
750MHz
Transfer Rate
1.5GT/s
-
-
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Clock
850MHz
Transfer Rate
1.7GT/s
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-
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-
-
-
-
-
-
-
-
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-
-
-
-
-
-
-
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TDP
55W
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TDP
110W
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-
-
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-
-
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-
-
-
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-
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No Ports
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No Ports
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Max Resolution
2560x1600
|
Max Resolution
2560x1600
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Max Resolution Refresh Rate
60Hz
|
Max Resolution Refresh Rate
60Hz
|
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Variable Refresh Rate
-
-
-
|
Variable Refresh Rate
-
-
-
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Display Stream Compression (DSC)
Not Supported
|
Display Stream Compression (DSC)
Not Supported
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Multi Monitor Support
2
|
Multi Monitor Support
2
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-
-
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-
-
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No Encoders
-
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No Encoders
-
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-
-
-
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-
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-
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-
-
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-
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Model
UVD 1.0
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Model
UVD 1.0
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Codec
-
-
-
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VC-1
-
-
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AVC (H.264)
-
-
-
-
-
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Codec
-
-
-
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VC-1
-
-
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AVC (H.264)
-
-
-
-
-
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Direct X
10
Direct 3D
10_1
|
Direct X
10
Direct 3D
10_1
|
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OpenGL
3.3
OpenCL
1.1
-
-
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OpenGL
3.3
OpenCL
1.1
-
-
|
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Shader Model
4.1
-
-
GFX
3
-
-
-
-
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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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