Radeon HD 7870 GHz vs Radeon HD 7950

Radeon HD 7870 GHz
Radeon HD 7950
1280 Shaders
2GB GDDR5
1000MHz
1792 Shaders
3GB GDDR5
800MHz
FP32
2.56 TFLOPS
FP32
2.87 TFLOPS
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-
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Form Factor
PCIe Card
2.0-Slots
Form Factor
PCIe Card
2.0-Slots
TDP
175W
TDP
200W
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
GCN 1
Family
Radeon HD 7000
Family
Radeon HD 7000
Codename
Pitcairn
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Variant
Pitcairn XT
Codename
Tahiti
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Variant
Tahiti Pro
Market Segment
Desktop
Market Segment
Desktop
Release Date
3/5/2012
Release Date
1/31/2012
Foundry
TSMC
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Foundry
TSMC
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Fabrication Node
28nm
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Fabrication Node
28nm
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Die Size
212 mm²
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Die Size
352 mm²
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Transistor Count
2.8 Billion
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Transistor Count
4.3 Billion
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Transistor Density
13.21M/mm²
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Transistor Density
12.25M/mm²
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Form
PCIe Card
Form
PCIe Card
Shading Units
1280 Shaders
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Shading Units
1792 Shaders
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Texture Mapping Units
80 TMUs
Texture Mapping Units
112 TMUs
Render Output Units
32 ROPs
Render Output Units
32 ROPs
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Compute Units
20 CUs
Compute Units
28 CUs
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1000MHz
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800MHz
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FP32
2.56 TFLOPS
FP32
2.87 TFLOPS
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FP64
0.16 TFLOPS
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FP64
0.72 TFLOPS
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Pixel Fillrate
32 GPixel/s
Pixel Fillrate
25.6 GPixel/s
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Texture Fillrate
80 GTexel/s
Texture Fillrate
89.6 GTexel/s
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L1
-
-
16KB/CU
-
L1
-
-
16KB/CU
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L2
512KB Shared
L2
768KB Shared
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2GB
GDDR5
-
3GB
GDDR5
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Bus Width
256Bit
Bus Width
384Bit
Clock
1200MHz
Transfer Rate
4.8GT/s
Bandwidth
153.6GB/s
Clock
1250MHz
Transfer Rate
5GT/s
Bandwidth
240GB/s
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TDP
175W
TDP
200W
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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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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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Max Resolution
4096x2160
Max Resolution
4096x2160
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
3
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Model
VCE 1.0
Model
VCE 1.0
Codec
-
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AVC (H.264)
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Codec
-
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AVC (H.264)
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Model
UVD 4.0
Model
UVD 3.2
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
12
Direct 3D
11_1
OpenGL
4.6
OpenCL
2.1
Vulkan
1.2
OpenGL
4.6
OpenCL
2.1
Vulkan
1.2
Shader Model
6.5
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GFX
6
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Shader Model
6.5
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GFX
6
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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
3.0
PCIe Lanes
16
Multi GPU Support
Supported
Type
2-way CrossFireX
Multi GPU Support
Supported
Type
4-way CrossFireX
Height
111 mm (4.37 in)
Width
241 mm (9.49 in)
Depth
37 mm (1.46 in)
Height
111 mm (4.37 in)
Width
275 mm (10.83 in)
Depth
38 mm (1.5 in)
Change Results