Radeon HD 7970M X2 vs Radeon HD 6990M
Radeon HD 7970M X2
Radeon HD 6990M
|
2x 1280 Shaders
2x 2GB GDDR5
850MHz
|
1120 Shaders
2GB GDDR5
715MHz
|
|
FP32
4.35 TFLOPS
|
FP32
1.6 TFLOPS
|
|
-
-
|
-
-
|
|
Form Factor
MXM-B
-
|
Form Factor
MXM-B
-
|
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TDP
75W
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TDP
75W
|
|
-
-
-
-
-
|
-
-
-
-
-
|
|
GB5 OpenCL - N/A
0%
|
GB5 OpenCL - N/A
0%
|
|
GB5 CUDA - N/A
0%
|
GB5 CUDA - N/A
0%
|
|
GB5 Metal - N/A
0%
|
GB5 Metal - N/A
0%
|
|
GB5 Vulkan - N/A
0%
|
GB5 Vulkan - N/A
0%
|
|
OCT 2020.1 - N/A
0%
|
OCT 2020.1 - N/A
0%
|
|
OCT Metal - N/A
0%
|
OCT Metal - N/A
0%
|
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Manufacturer
AMD
|
Manufacturer
AMD
|
|
Chip Designer
AMD
|
Chip Designer
AMD
|
|
Architecture
GCN 1
|
Architecture
TeraScale 2
|
|
Family
Radeon HD 7000
|
Family
Radeon HD 6000
|
|
Codename
Pitcairn
-
Variant
Wimbledon XT
|
Codename
Barts
RV940
Variant
Blackcomb XTX
|
|
Market Segment
Laptop
|
Market Segment
Laptop
|
|
Release Date
4/24/2012
|
Release Date
7/1/2011
|
|
Foundry
TSMC
-
|
Foundry
TSMC
-
|
|
Fabrication Node
28nm
-
|
Fabrication Node
40nm
-
|
|
Die Size
2x 212 mm²
-
|
Die Size
255 mm²
-
|
|
Transistor Count
2x 2.8 Billion
-
|
Transistor Count
1.7 Billion
-
|
|
Transistor Density
13.21M/mm²
-
|
Transistor Density
6.67M/mm²
-
|
|
Form
MXM-B
|
Form
MXM-B
|
|
Shading Units
2x 1280 Shaders
-
|
Shading Units
1120 Shaders
-
|
|
Texture Mapping Units
2x 80 TMUs
|
Texture Mapping Units
56 TMUs
|
|
Render Output Units
2x 32 ROPs
|
Render Output Units
32 ROPs
|
|
-
-
|
-
-
|
|
-
-
|
-
-
|
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-
-
|
-
-
|
|
Compute Units
2x 20 CUs
|
Compute Units
14 CUs
|
|
-
-
|
-
-
|
|
-
-
|
-
-
|
|
-
-
-
850MHz
|
-
-
-
715MHz
|
|
-
-
|
-
-
|
|
-
-
-
|
-
-
-
|
|
-
-
-
|
-
-
-
|
|
-
-
-
|
-
-
-
|
|
FP32
4.35 TFLOPS
|
FP32
1.6 TFLOPS
|
|
-
-
|
-
-
|
|
FP64
0.27 TFLOPS
-
|
-
-
-
|
|
-
-
|
-
-
|
|
-
-
-
|
-
-
-
|
|
Pixel Fillrate
27.2 GPixel/s
|
Pixel Fillrate
22.88 GPixel/s
|
|
-
-
|
-
-
|
|
Texture Fillrate
68 GTexel/s
|
Texture Fillrate
40.04 GTexel/s
|
|
-
-
|
-
-
|
|
L1
-
-
16KB/CU
-
|
L1
-
-
8KB/CU
-
|
|
L2
512KB Shared
|
L2
512KB Shared
|
|
-
-
-
|
-
-
-
|
|
2x 2GB
GDDR5
-
|
2GB
GDDR5
-
|
|
Bus Width
256Bit
|
Bus Width
256Bit
|
|
Clock
1200MHz
Transfer Rate
4.8GT/s
Bandwidth
153.6GB/s
|
Clock
900MHz
Transfer Rate
3.6GT/s
Bandwidth
115.2GB/s
|
|
-
-
-
-
-
-
-
-
-
|
-
-
-
-
-
-
-
-
-
|
|
TDP
75W
|
TDP
75W
|
|
-
-
|
-
-
|
|
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
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No Ports
|
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
No Ports
|
|
Max Resolution
4096x2160
|
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
3
|
Multi Monitor Support
2
|
|
-
-
|
-
-
|
|
Model
VCE 1.0
|
No Encoders
-
|
|
Codec
-
-
-
-
-
-
-
-
AVC (H.264)
-
-
-
-
-
|
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
|
|
Model
UVD 4.0
|
Model
UVD 3.0
|
|
Codec
MPEG-1
MPEG-2
MPEG-4
-
VC-1
-
-
-
AVC (H.264)
-
-
-
-
-
|
Codec
MPEG-1
MPEG-2
MPEG-4
-
VC-1
-
-
-
AVC (H.264)
-
-
-
-
-
|
|
Direct X
12
Direct 3D
11_1
|
Direct X
11
Direct 3D
11_0
|
|
OpenGL
4.6
OpenCL
2.1
Vulkan
1.2
|
OpenGL
4.5
OpenCL
1.2
-
-
|
|
Shader Model
6.5
-
-
GFX
6
-
-
-
-
|
Shader Model
5.0
-
-
GFX
4
-
-
-
-
|
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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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-
-
-
-
-
-
-
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-
-
PCIe Version
3.0
PCIe Lanes
16
|
-
-
PCIe Version
2.1
PCIe Lanes
16
|
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-
-
-
-
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