AMD Radeon Instinct MI455X
The AMD Radeon Instinct MI455X is a desktop-class GPU manufactured by AMD, built on AMD's officially announced 2 nm process technology, released in July 2026. This graphics card is equipped with 432GB HBM4 memory, suitable for gaming and professional graphics applications.
Process Size
2 nm
Boost Clock
2400 MHz
Base Clock
1000 MHz
TDP
2300W
L1 Cache
32 KB (per CU)
Memory Size
432GB
Memory Type
HBM4
Bandwidth
23.3TB/s
Shader Model
N/A
Graphics Card
Release Date
Jul 2026
Generation
Radeon Instinct
Type
Desktop
Bus Interface
PCIe 6.0 x16
Clock Speeds
Base Clock
1000 MHz
Boost Clock
2400 MHz
Memory Clock
1900 MHz
Memory
Memory Size
432GB
Memory Type
HBM4
Memory Bus
i
24576bit
Bandwidth
i
23.3TB/s
Render Config
Compute Units
256
Shading Units
i
32768
TMUs
i
1024
ROPs
i
0
L1 Cache
32 KB (per CU)
L2 Cache
192 MB
Theoretical Performance
Pixel Rate
i
0 MPixel/s
Texture Rate
i
2457.6 GTexel/s
FP16 (half)
i
157.3 TFLOPS
FP32 (float)
i
157.3 TFLOPS
FP64 (double)
i
2.458 TFLOPS
Graphics Processor
GPU Name
MI450 256CU
Architecture
CDNA 5.0
Foundry
TSMC
Process Size
2 nm
Transistors
320 billion
Die Size
Unknown
Board Design
TDP
2300W
Suggested PSU
2700 W
Outputs
No outputs
Power Connectors
None
Graphics Features
DirectX
N/A
OpenGL
N/A
OpenCL
3.0
Vulkan
i
N/A
Shader Model
N/A