Radeon R9 285 vs Radeon R9 270X

Radeon R9 285
Radeon R9 270X
1792 Shaders
2GB GDDR5
918MHz
1280 Shaders
2GB GDDR5
1050MHz
FP32
3.29 TFLOPS
FP32
2.69 TFLOPS
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Form Factor
PCIe Card
2.0-Slots
Form Factor
PCIe Card
2.0-Slots
TDP
190W
TDP
180W
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 3
Architecture
GCN 1
Family
Radeon R 200
Family
Radeon R 200
Codename
Tonga
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Variant
Tonga Pro
Codename
Pitcairn
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Variant
Curacao XT
Market Segment
Desktop
Market Segment
Desktop
Release Date
9/2/2014
Release Date
8/8/2013
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
359 mm²
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Die Size
212 mm²
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Transistor Count
5 Billion
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Transistor Count
2.8 Billion
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Transistor Density
13.93M/mm²
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Transistor Density
13.21M/mm²
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Form
PCIe Card
Form
PCIe Card
Shading Units
1792 Shaders
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Shading Units
1280 Shaders
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Texture Mapping Units
112 TMUs
Texture Mapping Units
80 TMUs
Render Output Units
32 ROPs
Render Output Units
32 ROPs
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Compute Units
28 CUs
Compute Units
20 CUs
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918MHz
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1000MHz Base
1050MHz
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FP32
3.29 TFLOPS
FP32
2.69 TFLOPS
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FP64
0.21 TFLOPS
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FP64
0.17 TFLOPS
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Pixel Fillrate
29.376 GPixel/s
Pixel Fillrate
33.6 GPixel/s
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Texture Fillrate
102.816 GTexel/s
Texture Fillrate
84 GTexel/s
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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
L2
512KB Shared
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2GB
GDDR5
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2GB
GDDR5
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Bus Width
256Bit
Bus Width
256Bit
Clock
1375MHz
Transfer Rate
5.5GT/s
Bandwidth
176GB/s
Clock
1400MHz
Transfer Rate
5.6GT/s
Bandwidth
179.2GB/s
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TDP
190W
TDP
180W
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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
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FreeSync
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Variable Refresh Rate
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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
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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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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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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
CrossFire XDMA
Multi GPU Support
Supported
Type
2-way CrossFireX
Height
110 mm (4.33 in)
Width
221 mm (8.7 in)
Depth
36 mm (1.42 in)
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Change Results