AMD Radeon HD 6850 vs AMD Radeon HD 7770 GHz
AMD Radeon HD 6850
$179
AMD Radeon HD 7770 GHz
$160
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960 Shaders
1GB GDDR5
775MHz
|
640 Shaders
1GB GDDR5
1000MHz
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|
Peak AI Performance
1.49 TFLOPS
FP32
|
Peak AI Performance
1.28 TFLOPS
FP32
|
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FP32
1.49 TFLOPS
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FP32
1.28 TFLOPS
|
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Form Factor
PCIe Card
2.0-Slots
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Form Factor
PCIe Card
2.0-Slots
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TDP
127W
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TDP
80W
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Power Connectors
1x 6-Pin
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Power Connectors
1x 6-Pin
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Peak AI Performance
|
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Radeon HD 6850 - 1.49 TFLOPS FP32
x1.16
Radeon HD 7770 GHz - 1.28 TFLOPS FP32
x1
FP32
|
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Radeon HD 6850 - 1.49 TFLOPS FP32
x1.16
Radeon HD 7770 GHz - 1.28 TFLOPS FP32
x1
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Radeon HD 6850 - 128GB/s
x1.78
Radeon HD 7770 GHz - 72GB/s
x1
|
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Radeon HD 6850 - 127W
x1.59
Radeon HD 7770 GHz - 80W
x1
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Manufacturer
AMD
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Manufacturer
AMD
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Chip Designer
AMD
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Chip Designer
AMD
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Architecture
TeraScale 2
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Architecture
GCN 1
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Family
Radeon HD 6000
|
Family
Radeon HD 7000
|
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Codename
Barts
RV940
Variant
Barts Pro
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Codename
Cape Verde
-
Variant
Cape Verde XT
|
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Market Segment
Desktop
|
Market Segment
Desktop
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Release Date
10/22/2010
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Release Date
2/1/2012
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Foundry
TSMC
|
Foundry
TSMC
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Fabrication Node
40nm
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Fabrication Node
28nm
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Die Size
255 mm²
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Die Size
123 mm²
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Transistor Count
1.7 Billion
|
Transistor Count
1.5 Billion
|
|
Transistor Density
6.67M/mm²
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Transistor Density
12.20M/mm²
|
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Form
PCIe Card
|
Form
PCIe Card
|
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Shading Units
960 Shaders
|
Shading Units
640 Shaders
|
|
Texture Mapping Units
48 TMUs
|
Texture Mapping Units
40 TMUs
|
|
Render Output Units
32 ROPs
|
Render Output Units
16 ROPs
|
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Compute Units
12 CUs
|
Compute Units
10 CUs
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775MHz
|
1000MHz
|
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Peak AI Performance
1.49 TFLOPS
FP32
|
Peak AI Performance
1.28 TFLOPS
FP32
|
|
FP32
1.49 TFLOPS
|
FP32
1.28 TFLOPS
|
|
-
-
|
FP64
80 GFLOPS
|
|
Pixel Fillrate
24.8 GPixel/s
|
Pixel Fillrate
16 GPixel/s
|
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Texture Fillrate
37.2 GTexel/s
|
Texture Fillrate
40 GTexel/s
|
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L1
8KB/CU
|
L1
16KB/CU
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L2
512KB Shared
|
L2
256KB Shared
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1GB
GDDR5
|
1GB
GDDR5
|
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Bus Width
256Bit
|
Bus Width
128Bit
|
|
Clock
1000MHz
Transfer Rate
4GT/s
Bandwidth
128GB/s
|
Clock
1125MHz
Transfer Rate
4.5GT/s
Bandwidth
72GB/s
|
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TDP
127W
|
TDP
80W
|
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2x DVI-I Dual-Link
2x mini-DisplayPort 1.1
-
1x HDMI 1.3
-
|
1x DVI-I Dual-Link
-
2x mini-DisplayPort 1.2
-
1x HDMI 1.4
|
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Max Resolution
2560x1600
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Max Resolution
4096x2160
|
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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
3
|
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No Encoders
-
|
Model
VCE 1.0
|
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-
-
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Codec
AVC (H.264)
|
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Model
UVD 3.0
|
Model
UVD 4.0
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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
11
Direct 3D
11_0
|
Direct X
12
Direct 3D
11_1
|
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OpenGL
4.5
OpenCL
1.2
-
-
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OpenGL
4.6
OpenCL
2.1
Vulkan
1.2
|
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Shader Model
5.0
GFX
4
|
Shader Model
6.5
GFX
6
|
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1x Fan
|
1x Fan
|
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Power Connectors
1x 6-Pin
|
Power Connectors
1x 6-Pin
|
|
Slots Required
2.0
PCIe Version
2.1
PCIe Lanes
16
|
Slots Required
2.0
PCIe Version
3.0
PCIe Lanes
16
|
|
Multi GPU Support
Supported
Type
4-way CrossFireX
|
Multi GPU Support
Supported
Type
2-way CrossFireX
|
|
Height
111 mm (4.37 in)
Width
247 mm (9.72 in)
Depth
36 mm (1.42 in)
|
Height
111 mm (4.37 in)
Width
210 mm (8.27 in)
Depth
37 mm (1.46 in)
|
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