AMD Radeon RX 455 OEM vs AMD Radeon RX 580X
GPU · Specs Compare
Graphics Card
Release Date
Jun 2016
Apr 2018
Generation
Arctic Islands
Polaris
Type
Desktop
Desktop
Bus Interface
PCIe 3.0 x16
PCIe 3.0 x16
Clock Speeds
Memory Clock
1625 MHz
2000 MHz
Base Clock
—
1257 MHz
Boost Clock
—
1340 MHz
Memory
Memory Size
2GB
8GB
Memory Type
GDDR5
GDDR5
Memory Bus
128bit
256bit
Bandwidth
104.0GB/s
256.0GB/s
Render Config
Compute Units
12
36
Shading Units
768
2304
TMUs
48
144
ROPs
16
32
L1 Cache
16 KB (per CU)
16 KB (per CU)
L2 Cache
256 KB
2 MB
Theoretical Performance
Pixel Rate
16.80 GPixel/s
42.88 GPixel/s
Texture Rate
50.40 GTexel/s
193.0 GTexel/s
FP32 (float)
1.613 TFLOPS
6.175 TFLOPS
FP64 (double)
100.8 GFLOPS
385.9 GFLOPS
FP16 (half)
—
6.175 TFLOPS
Graphics Processor
GPU Name
Tobago
Polaris 20
GPU Variant
Tobago PRO(215-0875010)
Polaris 20 XTX(215-0910038)
Architecture
GCN 2.0
GCN 4.0
Foundry
TSMC
GlobalFoundries
Process Size
28 nm
14 nm
Transistors
2.08 billion
5.7 billion
Die Size
160 mm²
232 mm²
Board Design
TDP
100W
185W
Suggested PSU
300 W
450 W
Outputs
1x DVI1x HDMI 1.4a1x DisplayPort 1.2
1x HDMI 2.0b3x DisplayPort 1.4a
Power Connectors
1x 6-pin
1x 8-pin
Graphics Features
DirectX
12 (12_0)
12 (12_0)
OpenGL
4.6
4.6
OpenCL
2.0
2.1
Vulkan
1.2
1.2
Shader Model
6.3
6.4
▲ Specs Compare
Data sourced from official specifications and benchmark tests.