AMD Radeon R9 280 vs AMD Radeon R9 285X
AMD Radeon R9 280
$249
AMD Radeon R9 285X
|
1792 Shaders
3GB GDDR5
933MHz
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2048 Shaders
3GB GDDR5
1002MHz
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Peak AI Performance
3.34 TFLOPS
FP32
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Peak AI Performance
4.1 TFLOPS
FP32
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FP32
3.34 TFLOPS
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FP32
4.1 TFLOPS
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-
-
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-
-
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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
250W
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TDP
200W
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Power Connectors
1x 6-Pin
1x 8-Pin
-
-
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Power Connectors
1x 6-Pin
1x 8-Pin
-
-
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GB6 OpenCL N/A
0%
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GB6 Metal N/A
0%
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GB6 Metal N/A
0%
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GB6 Vulkan N/A
0%
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GB5 OpenCL N/A
0%
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GB5 OpenCL N/A
0%
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GB5 CUDA N/A
0%
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GB5 CUDA N/A
0%
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GB5 Metal N/A
0%
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GB5 Metal N/A
0%
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GB5 Vulkan N/A
0%
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GB5 Vulkan N/A
0%
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OCT 2020.1 N/A
0%
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OCT 2020.1 N/A
0%
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OCT Metal N/A
0%
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OCT Metal N/A
0%
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Peak AI
Performance
3.34 TFLOPS
FP32
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Peak AI
Performance
4.1 TFLOPS
FP32
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FP32
3.34 TFLOPS
-
-
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FP32
4.1 TFLOPS
-
-
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FP64
840 GFLOPS
-
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FP64
260 GFLOPS
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Pixel
Fillrate
29.856 GPixel/s
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Pixel
Fillrate
32.064 GPixel/s
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-
-
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-
-
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Texture
Fillrate
104.496 GTexel/s
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Texture
Fillrate
128.256 GTexel/s
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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
GCN 1
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Architecture
GCN 3
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Family
Radeon R 200
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Family
Radeon R 200
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Codename
Tahiti
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Variant
Tahiti Pro
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Codename
Tonga
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Variant
Tonga XT
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Market Segment
Desktop
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Market Segment
Desktop
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Release Date
3/4/2014
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Release Date
9/2/2014
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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
352 mm²
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Die Size
359 mm²
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Transistor Count
4.3 Billion
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Transistor Count
5 Billion
-
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Transistor Density
12.25M/mm²
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Transistor Density
13.93M/mm²
-
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Form
PCIe Card
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Form
PCIe Card
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Shading Units
1792 Shaders
-
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Shading Units
2048 Shaders
-
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Texture Mapping Units
112 TMUs
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Texture Mapping Units
128 TMUs
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Render Output Units
32 ROPs
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Render Output Units
32 ROPs
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Compute Units
28 CUs
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Compute Units
32 CUs
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-
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827MHz Base
933MHz
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1002MHz
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L1
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16KB/CU
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L1
-
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16KB/CU
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L2
768KB Shared
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L2
768KB Shared
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3GB
GDDR5
-
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3GB
GDDR5
-
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Bus Width
384Bit
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Bus Width
384Bit
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Clock
1250MHz
Transfer Rate
5GT/s
Bandwidth
240GB/s
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Clock
1375MHz
Transfer Rate
5.5GT/s
Bandwidth
264GB/s
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TDP
250W
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TDP
200W
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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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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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Max Resolution
4096x2160
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Max Resolution
4096x2160
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Max Resolution Refresh Rate
60Hz
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Max Resolution Refresh Rate
60Hz
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Variable Refresh Rate
-
-
-
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Variable Refresh Rate
-
FreeSync
-
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Display Stream Compression (DSC)
Not Supported
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Display Stream Compression (DSC)
Not Supported
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Multi Monitor Support
3
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Multi Monitor Support
3
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-
-
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Content Protection
HDCP 1.4
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Model
VCE 1.0
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Model
VCE 3.0
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Codec
-
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AVC (H.264)
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Codec
-
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AVC (H.264)
HEVC (H.265)
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-
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-
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Model
UVD 3.2
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Model
UVD 5.0
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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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Codec
MPEG-1
MPEG-2
MPEG-4
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VC-1
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AVC (H.264)
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-
-
-
-
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Direct X
12
Direct 3D
11_1
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Direct X
12
Direct 3D
12_0
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OpenGL
4.6
OpenCL
2.1
Vulkan
1.2
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OpenGL
4.6
OpenCL
2.1
Vulkan
1.2
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Shader Model
6.5
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GFX
6
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Shader Model
6.5
-
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GFX
8
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1x Fan
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1x Fan
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Power Connectors
-
-
1x 6-Pin
1x 8-Pin
-
-
-
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Power Connectors
-
-
1x 6-Pin
1x 8-Pin
-
-
-
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Slots Required
2.0
PCIe Version
3.0
PCIe Lanes
16
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Slots Required
2.0
PCIe Version
3.0
PCIe Lanes
16
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Multi GPU Support
Supported
Type
4-way CrossFireX
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Multi GPU Support
Supported
Type
CrossFire XDMA
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Height
110 mm (4.33 in)
Width
275 mm (10.83 in)
Depth
36 mm (1.42 in)
|
Height
110 mm (4.33 in)
Width
267 mm (10.51 in)
Depth
37 mm (1.46 in)
|
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