Radeon RX 550X 8CU vs Radeon RX 455
Radeon RX 550X 8CU
Radeon RX 455
|
512 Shaders
2GB GDDR5
1287MHz
|
768 Shaders
2GB GDDR5
1050MHz
|
|
FP32
1.32 TFLOPS
|
FP32
1.61 TFLOPS
|
|
FP16
1.32 TFLOPS
|
-
-
|
|
Form Factor
PCIe Card
2.0-Slots
|
Form Factor
PCIe Card
-
|
|
TDP
50W
|
TDP
100W
|
|
-
-
-
-
-
|
Power Connectors
1x 6-Pin
-
-
-
|
|
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 4
|
Architecture
GCN 2
|
|
Family
Radeon RX 500
|
Family
Radeon R 400
|
|
Codename
Lexa
Polaris 12
Variant
Polaris 12 XL
|
Codename
Bonaire
-
Variant
Tobago Pro
|
|
Market Segment
Desktop
|
Market Segment
Desktop
|
|
Release Date
4/11/2018
|
Release Date
6/30/2016
|
|
Foundry
GlobalFoundries
-
|
Foundry
TSMC
-
|
|
Fabrication Node
14LPP
-
|
Fabrication Node
28nm
-
|
|
Die Size
103 mm²
-
|
Die Size
160 mm²
-
|
|
Transistor Count
2.2 Billion
-
|
Transistor Count
2.1 Billion
-
|
|
Transistor Density
21.36M/mm²
-
|
Transistor Density
13.00M/mm²
-
|
|
Form
PCIe Card
|
Form
PCIe Card
|
|
Shading Units
512 Shaders
-
|
Shading Units
768 Shaders
-
|
|
Texture Mapping Units
32 TMUs
|
Texture Mapping Units
48 TMUs
|
|
Render Output Units
16 ROPs
|
Render Output Units
16 ROPs
|
|
-
-
|
-
-
|
|
-
-
|
-
-
|
|
-
-
|
-
-
|
|
Compute Units
8 CUs
|
Compute Units
12 CUs
|
|
-
-
|
-
-
|
|
-
-
|
-
-
|
|
-
-
1100MHz Base
1287MHz
|
-
-
-
1050MHz
|
|
-
-
|
-
-
|
|
-
-
-
|
-
-
-
|
|
FP16
1.32 TFLOPS
-
|
-
-
-
|
|
-
-
-
|
-
-
-
|
|
FP32
1.32 TFLOPS
|
FP32
1.61 TFLOPS
|
|
-
-
|
-
-
|
|
FP64
0.08 TFLOPS
-
|
FP64
0.1 TFLOPS
-
|
|
-
-
|
-
-
|
|
-
-
-
|
-
-
-
|
|
Pixel Fillrate
20.592 GPixel/s
|
Pixel Fillrate
16.8 GPixel/s
|
|
-
-
|
-
-
|
|
Texture Fillrate
41.184 GTexel/s
|
Texture Fillrate
50.4 GTexel/s
|
|
-
-
|
-
-
|
|
L1
-
-
16KB/CU
-
|
L1
-
-
16KB/CU
-
|
|
L2
512KB Shared
|
L2
256KB Shared
|
|
-
-
-
|
-
-
-
|
|
2GB
GDDR5
-
|
2GB
GDDR5
-
|
|
Bus Width
128Bit
|
Bus Width
128Bit
|
|
Clock
1750MHz
Transfer Rate
7GT/s
Bandwidth
112GB/s
|
Clock
1625MHz
Transfer Rate
6.5GT/s
Bandwidth
104GB/s
|
|
-
-
-
-
-
-
-
-
-
|
-
-
-
-
-
-
-
-
-
|
|
TDP
50W
|
TDP
100W
|
|
-
-
|
-
-
|
|
-
-
-
-
-
-
-
-
-
-
1x DVI-D Dual-Link
-
-
-
-
-
-
-
-
-
-
-
-
-
1x DisplayPort 1.4
-
-
-
-
-
-
-
-
-
-
1x HDMI 2.0
-
-
-
|
-
-
-
-
-
-
-
-
-
-
1x DVI-D Dual-Link
-
-
-
-
-
-
-
-
-
-
-
1x DisplayPort 1.2
-
-
-
-
-
-
-
-
-
-
-
1x HDMI 1.4
-
-
-
-
|
|
Max Resolution
5120x2880
|
Max Resolution
4096x2160
|
|
Max Resolution Refresh Rate
60Hz
|
Max Resolution Refresh Rate
60Hz
|
|
Variable Refresh Rate
-
FreeSync
-
|
Variable Refresh Rate
-
FreeSync
-
|
|
Display Stream Compression (DSC)
Not Supported
|
Display Stream Compression (DSC)
Not Supported
|
|
Multi Monitor Support
3
|
Multi Monitor Support
3
|
|
Content Protection
HDCP 2.2
|
Content Protection
HDCP 1.4
|
|
Model
VCE 3.4
|
Model
VCE 2.0
|
|
Codec
-
-
-
-
-
-
-
-
AVC (H.264)
HEVC (H.265)
-
-
-
-
|
Codec
-
-
-
-
-
-
-
-
AVC (H.264)
-
-
-
-
-
|
|
Model
UVD 6.3
|
Model
UVD 4.2
|
|
Codec
MPEG-1
MPEG-2
MPEG-4
JPEG
VC-1
-
-
-
AVC (H.264)
HEVC (H.265)
-
-
-
-
|
Codec
MPEG-1
MPEG-2
MPEG-4
-
VC-1
-
-
-
AVC (H.264)
-
-
-
-
-
|
|
Direct X
12
Direct 3D
12_0
|
Direct X
12
Direct 3D
12_0
|
|
OpenGL
4.6
OpenCL
2.1
Vulkan
1.3
|
OpenGL
4.6
OpenCL
2.1
Vulkan
1.2
|
|
Shader Model
6.7
-
-
GFX
8
-
-
-
-
|
Shader Model
6.5
-
-
GFX
7
-
-
-
-
|
|
-
-
-
1x Fan
|
-
-
-
1x Fan
|
|
-
-
-
-
-
-
-
-
|
Power Connectors
-
-
1x 6-Pin
-
-
-
-
|
|
Slots Required
2.0
PCIe Version
3.0
PCIe Lanes
8
|
-
-
PCIe Version
3.0
PCIe Lanes
16
|
|
Multi GPU Support
Supported
Type
CrossFire XDMA
|
Multi GPU Support
Supported
Type
CrossFire XDMA
|
|
Height
110 mm (4.33 in)
Width
145 mm (5.71 in)
Depth
37 mm (1.46 in)
|
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