Radeon HD 7950 vs Radeon HD 6870

Radeon HD 7950
Radeon HD 6870
1792 Shaders
3GB GDDR5
800MHz
1120 Shaders
2GB GDDR5
900MHz
FP32
2.87 TFLOPS
FP32
2.02 TFLOPS
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-
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-
Form Factor
PCIe Card
2.0-Slots
Form Factor
PCIe Card
2.0-Slots
TDP
200W
TDP
151W
Power Connectors
2x 6-Pin
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-
-
Power Connectors
2x 6-Pin
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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%
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
Tahiti
-
Variant
Tahiti Pro
Codename
Barts
RV940
Variant
Barts XT
Market Segment
Desktop
Market Segment
Desktop
Release Date
1/31/2012
Release Date
10/22/2010
Foundry
TSMC
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Foundry
TSMC
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Fabrication Node
28nm
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Fabrication Node
40nm
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Die Size
352 mm²
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Die Size
255 mm²
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Transistor Count
4.3 Billion
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Transistor Count
1.7 Billion
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Transistor Density
12.25M/mm²
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Transistor Density
6.67M/mm²
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Form
PCIe Card
Form
PCIe Card
Shading Units
1792 Shaders
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Shading Units
1120 Shaders
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Texture Mapping Units
112 TMUs
Texture Mapping Units
56 TMUs
Render Output Units
32 ROPs
Render Output Units
32 ROPs
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Compute Units
28 CUs
Compute Units
14 CUs
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800MHz
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900MHz
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FP32
2.87 TFLOPS
FP32
2.02 TFLOPS
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FP64
0.72 TFLOPS
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Pixel Fillrate
25.6 GPixel/s
Pixel Fillrate
28.8 GPixel/s
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Texture Fillrate
89.6 GTexel/s
Texture Fillrate
50.4 GTexel/s
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L1
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-
16KB/CU
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L1
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-
8KB/CU
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L2
768KB Shared
L2
512KB Shared
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3GB
GDDR5
-
2GB
GDDR5
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Bus Width
384Bit
Bus Width
256Bit
Clock
1250MHz
Transfer Rate
5GT/s
Bandwidth
240GB/s
Clock
1050MHz
Transfer Rate
4.2GT/s
Bandwidth
134.4GB/s
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TDP
200W
TDP
151W
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1x DVI-I Dual-Link
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2x mini-DisplayPort 1.2
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1x HDMI 1.4
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2x DVI-I Dual-Link
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2x mini-DisplayPort 1.1
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1x HDMI 1.3
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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
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Model
VCE 1.0
No Encoders
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Codec
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AVC (H.264)
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Model
UVD 3.2
Model
UVD 3.0
Codec
MPEG-1
MPEG-2
MPEG-4
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VC-1
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AVC (H.264)
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Codec
MPEG-1
MPEG-2
MPEG-4
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VC-1
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AVC (H.264)
-
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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
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Shader Model
6.5
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GFX
6
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Shader Model
5.0
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GFX
4
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1x Fan
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1x Fan
Power Connectors
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2x 6-Pin
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Power Connectors
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2x 6-Pin
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Slots Required
2.0
PCIe Version
3.0
PCIe Lanes
16
Slots Required
2.0
PCIe Version
2.1
PCIe Lanes
16
Multi GPU Support
Supported
Type
4-way CrossFireX
Multi GPU Support
Supported
Type
4-way CrossFireX
Height
111 mm (4.37 in)
Width
275 mm (10.83 in)
Depth
38 mm (1.5 in)
Height
111 mm (4.37 in)
Width
247 mm (9.72 in)
Depth
36 mm (1.42 in)
Change Results