AMD Radeon RX 590 vs AMD Radeon Instinct MI455X
GPU · Specs Compare
Graphics Card
Release Date
Nov 2018
Jul 2026
Generation
Polaris
Radeon Instinct
Type
Desktop
Desktop
Bus Interface
PCIe 3.0 x16
PCIe 6.0 x16
Clock Speeds
Base Clock
1469 MHz
1000 MHz
Boost Clock
1545 MHz
2400 MHz
Memory Clock
2000 MHz
1900 MHz
Memory
Memory Size
8GB
432GB
Memory Type
GDDR5
HBM4
Memory Bus
256bit
24576bit
Bandwidth
256.0GB/s
23.3TB/s
Render Config
Compute Units
36
256
Shading Units
2304
32768
TMUs
144
1024
ROPs
32
0
L1 Cache
16 KB (per CU)
32 KB (per CU)
L2 Cache
2 MB
192 MB
Theoretical Performance
Pixel Rate
49.44 GPixel/s
0 MPixel/s
Texture Rate
222.5 GTexel/s
2457.6 GTexel/s
FP16 (half)
7.119 TFLOPS
157.3 TFLOPS
FP32 (float)
7.119 TFLOPS
157.3 TFLOPS
FP64 (double)
445.0 GFLOPS
2.458 TFLOPS
Graphics Processor
GPU Name
Polaris 30
MI450 256CU
GPU Variant
Polaris 30 XT(215-0922006)
—
Architecture
GCN 4.0
CDNA 5.0
Foundry
GlobalFoundries
TSMC
Process Size
12 nm
2 nm
Transistors
5.7 billion
320 billion
Die Size
232 mm²
Unknown
Board Design
TDP
175W
2300W
Suggested PSU
450 W
2700 W
Outputs
1x HDMI 2.0b3x DisplayPort 1.4a
No outputs
Power Connectors
1x 8-pin
None
Graphics Features
DirectX
12 (12_0)
N/A
OpenGL
4.6
N/A
OpenCL
2.1
3.0
Vulkan
1.2
N/A
Shader Model
6.4
N/A
▲ Specs Compare
Data sourced from official specifications and benchmark tests.