Radeon RX 455 vs Radeon RX 550 8CU

Radeon RX 455
Radeon RX 550 8CU
768 Shaders
2GB GDDR5
1050MHz
512 Shaders
2GB GDDR5
1183MHz
FP32
1.61 TFLOPS
FP32
1.21 TFLOPS
-
-
FP16
1.21 TFLOPS
Form Factor
PCIe Card
-
Form Factor
PCIe Card
2.0-Slots
TDP
100W
TDP
50W
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 2
Architecture
GCN 4
Family
Radeon R 400
Family
Radeon RX 500
Codename
Bonaire
-
Variant
Tobago Pro
Codename
Lexa
Polaris 12
Variant
Polaris 12 XL
Market Segment
Desktop
Market Segment
Desktop
Release Date
6/30/2016
Release Date
4/20/2017
Foundry
TSMC
-
Foundry
GlobalFoundries
-
Fabrication Node
28nm
-
Fabrication Node
14LPP
-
Die Size
160 mm²
-
Die Size
103 mm²
-
Transistor Count
2.1 Billion
-
Transistor Count
2.2 Billion
-
Transistor Density
13.00M/mm²
-
Transistor Density
21.36M/mm²
-
Form
PCIe Card
Form
PCIe Card
Shading Units
768 Shaders
-
Shading Units
512 Shaders
-
Texture Mapping Units
48 TMUs
Texture Mapping Units
32 TMUs
Render Output Units
16 ROPs
Render Output Units
16 ROPs
-
-
-
-
-
-
-
-
-
-
-
-
Compute Units
12 CUs
Compute Units
8 CUs
-
-
-
-
-
-
-
-
-
-
-
1050MHz
-
-
1100MHz Base
1183MHz
-
-
-
-
-
-
-
-
-
-
-
-
-
FP16
1.21 TFLOPS
-
-
-
-
-
-
-
FP32
1.61 TFLOPS
FP32
1.21 TFLOPS
-
-
-
-
FP64
0.1 TFLOPS
-
FP64
0.08 TFLOPS
-
-
-
-
-
-
-
-
-
-
-
Pixel Fillrate
16.8 GPixel/s
Pixel Fillrate
18.928 GPixel/s
-
-
-
-
Texture Fillrate
50.4 GTexel/s
Texture Fillrate
37.856 GTexel/s
-
-
-
-
L1
-
-
16KB/CU
-
L1
-
-
16KB/CU
-
L2
256KB Shared
L2
512KB Shared
-
-
-
-
-
-
2GB
GDDR5
-
2GB
GDDR5
-
Bus Width
128Bit
Bus Width
128Bit
Clock
1625MHz
Transfer Rate
6.5GT/s
Bandwidth
104GB/s
Clock
1750MHz
Transfer Rate
7GT/s
Bandwidth
112GB/s
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
TDP
100W
TDP
50W
-
-
-
-
-
-
-
-
-
-
-
-
-
-
1x DVI-D Dual-Link
-
-
-
-
-
-
-
-
-
-
-
1x DisplayPort 1.2
-
-
-
-
-
-
-
-
-
-
-
1x HDMI 1.4
-
-
-
-
-
-
-
-
-
-
-
-
-
-
1x DVI-D Dual-Link
-
-
-
-
-
-
-
-
-
-
-
-
-
1x DisplayPort 1.4
-
-
-
-
-
-
-
-
-
-
1x HDMI 2.0
-
-
-
Max Resolution
4096x2160
Max Resolution
5120x2880
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 1.4
Content Protection
HDCP 2.2
Model
VCE 2.0
Model
VCE 3.4
Codec
-
-
-
-
-
-
-
-
AVC (H.264)
-
-
-
-
-
Codec
-
-
-
-
-
-
-
-
AVC (H.264)
HEVC (H.265)
-
-
-
-
Model
UVD 4.2
Model
UVD 6.3
Codec
MPEG-1
MPEG-2
MPEG-4
-
VC-1
-
-
-
AVC (H.264)
-
-
-
-
-
Codec
MPEG-1
MPEG-2
MPEG-4
JPEG
VC-1
-
-
-
AVC (H.264)
HEVC (H.265)
-
-
-
-
Direct X
12
Direct 3D
12_0
Direct X
12
Direct 3D
12_0
OpenGL
4.6
OpenCL
2.1
Vulkan
1.2
OpenGL
4.6
OpenCL
2.1
Vulkan
1.3
Shader Model
6.5
-
-
GFX
7
-
-
-
-
Shader Model
6.7
-
-
GFX
8
-
-
-
-
-
-
-
1x Fan
-
-
-
1x Fan
Power Connectors
-
-
1x 6-Pin
-
-
-
-
-
-
-
-
-
-
-
-
-
-
PCIe Version
3.0
PCIe Lanes
16
Slots Required
2.0
PCIe Version
3.0
PCIe Lanes
8
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)
Change Results