AMD Radeon HD 6770M Mac MXM vs ATI Mobility Radeon HD 4860
AMD Radeon HD 6770M Mac MXM
ATI Mobility Radeon HD 4860
|
480 Shaders
512MB GDDR5
675MHz
|
640 Shaders
1GB GDDR5
650MHz
|
|
Peak AI Performance
650 GFLOPS
FP32
|
Peak AI Performance
830 GFLOPS
FP32
|
|
FP32
650 GFLOPS
|
FP32
830 GFLOPS
|
|
Form Factor
MXM-A
|
Form Factor
MXM-A
|
|
TDP
35W
|
TDP
Unknown
|
Peak AI Performance
|
|
Radeon HD 6770M Mac MXM - 650 GFLOPS FP32
x1
Mobility Radeon HD 4860 - 830 GFLOPS FP32
x1.28
FP32
|
|
Radeon HD 6770M Mac MXM - 650 GFLOPS FP32
x1
Mobility Radeon HD 4860 - 830 GFLOPS FP32
x1.28
|
|
Radeon HD 6770M Mac MXM - 50.8GB/s
x1
Mobility Radeon HD 4860 - 64GB/s
x1.26
|
0%
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0%
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0%
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0%
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0%
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0%
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0%
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0%
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0%
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0%
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0%
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0%
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0%
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0%
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0%
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0%
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0%
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0%
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Manufacturer
AMD
|
Manufacturer
ATI
|
|
Chip Designer
AMD
|
Chip Designer
ATI
|
|
Architecture
TeraScale 2
|
Architecture
TeraScale 1
|
|
Family
Radeon HD 6000
|
Family
Radeon HD 4000
|
|
Codename
Turks
RV930
Variant
Whistler XT
|
Codename
Walden
RV740
Variant
M97
|
|
Market Segment
Laptop
|
Market Segment
Laptop
|
|
Release Date
1/4/2011
|
Release Date
3/3/2009
|
|
Foundry
TSMC
|
Foundry
TSMC
|
|
Fabrication Node
40nm
|
Fabrication Node
40nm
|
|
Die Size
118 mm²
|
Die Size
137 mm²
|
|
Transistor Count
716 Million
|
Transistor Count
826 Million
|
|
Transistor Density
6.07M/mm²
|
Transistor Density
6.03M/mm²
|
|
Form
MXM-A
|
Form
MXM-A
|
|
Shading Units
480 Shaders
|
Shading Units
640 Shaders
|
|
Texture Mapping Units
24 TMUs
|
Texture Mapping Units
32 TMUs
|
|
Render Output Units
8 ROPs
|
Render Output Units
16 ROPs
|
|
Compute Units
6 CUs
|
Compute Units
8 CUs
|
|
675MHz
|
650MHz
|
|
Peak AI Performance
650 GFLOPS
FP32
|
Peak AI Performance
830 GFLOPS
FP32
|
|
FP32
650 GFLOPS
|
FP32
830 GFLOPS
|
|
-
-
|
FP64
170 GFLOPS
|
|
Pixel Fillrate
5.4 GPixel/s
|
Pixel Fillrate
10.4 GPixel/s
|
|
Texture Fillrate
16.2 GTexel/s
|
Texture Fillrate
20.8 GTexel/s
|
|
L1
8KB/CU
|
L1
16KB/CU
|
|
L2
256KB Shared
|
L2
256KB Shared
|
|
512MB
GDDR5
|
1GB
GDDR5
|
|
Bus Width
128Bit
|
Bus Width
128Bit
|
|
Clock
794MHz
Transfer Rate
3.2GT/s
Bandwidth
50.8GB/s
|
Clock
1000MHz
Transfer Rate
4GT/s
Bandwidth
64GB/s
|
|
TDP
35W
|
TDP
Unknown
|
|
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
|
|
No Encoders
|
No Encoders
|
|
Model
UVD 3.0
|
Model
UVD 2.0
|
|
Codec
MPEG-1
MPEG-2
MPEG-4
VC-1
AVC (H.264)
|
Codec
-
-
-
VC-1
AVC (H.264)
|
|
Direct X
11
Direct 3D
11_0
|
Direct X
10
Direct 3D
10_1
|
|
OpenGL
4.5
OpenCL
1.2
|
OpenGL
3.3
OpenCL
1.1
|
|
Shader Model
5.0
GFX
4
|
Shader Model
4.1
GFX
3
|
|
Not a Card
|
Not a Card
|
|
PCIe Version
2.1
PCIe Lanes
16
|
PCIe Version
2.0
PCIe Lanes
16
|
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