Radeon R9 285X vs Radeon R9 280

Radeon R9 285X
Radeon R9 280
2048 Shaders
3GB GDDR5
1002MHz
1792 Shaders
3GB GDDR5
933MHz
FP32
4.1 TFLOPS
FP32
3.34 TFLOPS
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-
-
-
Form Factor
PCIe Card
2.0-Slots
Form Factor
PCIe Card
2.0-Slots
TDP
200W
TDP
250W
Power Connectors
1x 6-Pin
1x 8-Pin
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-
Power Connectors
1x 6-Pin
1x 8-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 3
Architecture
GCN 1
Family
Radeon R 200
Family
Radeon R 200
Codename
Tonga
-
Variant
Tonga XT
Codename
Tahiti
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Variant
Tahiti Pro
Market Segment
Desktop
Market Segment
Desktop
Release Date
9/2/2014
Release Date
3/4/2014
Foundry
TSMC
-
Foundry
TSMC
-
Fabrication Node
28nm
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Fabrication Node
28nm
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Die Size
359 mm²
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Die Size
352 mm²
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Transistor Count
5 Billion
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Transistor Count
4.3 Billion
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Transistor Density
13.93M/mm²
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Transistor Density
12.25M/mm²
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Form
PCIe Card
Form
PCIe Card
Shading Units
2048 Shaders
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Shading Units
1792 Shaders
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Texture Mapping Units
128 TMUs
Texture Mapping Units
112 TMUs
Render Output Units
32 ROPs
Render Output Units
32 ROPs
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Compute Units
32 CUs
Compute Units
28 CUs
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1002MHz
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827MHz Base
933MHz
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FP32
4.1 TFLOPS
FP32
3.34 TFLOPS
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-
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-
FP64
0.26 TFLOPS
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FP64
0.84 TFLOPS
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Pixel Fillrate
32.064 GPixel/s
Pixel Fillrate
29.856 GPixel/s
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Texture Fillrate
128.256 GTexel/s
Texture Fillrate
104.496 GTexel/s
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L1
-
-
16KB/CU
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L1
-
-
16KB/CU
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L2
768KB Shared
L2
768KB Shared
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-
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3GB
GDDR5
-
3GB
GDDR5
-
Bus Width
384Bit
Bus Width
384Bit
Clock
1375MHz
Transfer Rate
5.5GT/s
Bandwidth
264GB/s
Clock
1250MHz
Transfer Rate
5GT/s
Bandwidth
240GB/s
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TDP
200W
TDP
250W
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2x DVI-D Dual-Link
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1x DisplayPort 1.2
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1x HDMI 1.4
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1x DVI-I Dual-Link
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1x DVI-D Dual-Link
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1x 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
-
FreeSync
-
Variable Refresh Rate
-
-
-
Display Stream Compression (DSC)
Not Supported
Display Stream Compression (DSC)
Not Supported
Multi Monitor Support
3
Multi Monitor Support
3
Content Protection
HDCP 1.4
-
-
Model
VCE 3.0
Model
VCE 1.0
Codec
-
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AVC (H.264)
HEVC (H.265)
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Codec
-
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AVC (H.264)
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-
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Model
UVD 5.0
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
12_0
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
8
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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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1x 6-Pin
1x 8-Pin
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Power Connectors
-
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1x 6-Pin
1x 8-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
CrossFire XDMA
Multi GPU Support
Supported
Type
4-way CrossFireX
Height
110 mm (4.33 in)
Width
267 mm (10.51 in)
Depth
37 mm (1.46 in)
Height
110 mm (4.33 in)
Width
275 mm (10.83 in)
Depth
36 mm (1.42 in)
Change Results