AMD Radeon Instinct MI455X vs NVIDIA PG506 242
GPU Specs Compare
Graphics Card
Release Date
Jul 2026
Apr 2021
Generation
Radeon Instinct
Tesla
Type
Desktop
Desktop
Bus Interface
PCIe 6.0 x16
PCIe 4.0 x16
Clock Speeds
Base Clock
1000 MHz
930 MHz
Boost Clock
2400 MHz
1440 MHz
Memory Clock
1900 MHz
1215 MHz
Memory
Memory Size
432GB
24GB
Memory Type
HBM4
HBM2
Memory Bus
24576bit
3072bit
Bandwidth
23.3TB/s
933.1GB/s
Render Config
Compute Units
256
-
Shading Units
32768
3584
TMUs
1024
224
ROPs
0
96
L1 Cache
32 KB (per CU)
192 KB (per SM)
L2 Cache
192 MB
24 MB
SM Count
-
56
Tensor Cores
-
224
Theoretical Performance
Pixel Rate
0 MPixel/s
138.2 GPixel/s
Texture Rate
2457.6 GTexel/s
322.6 GTexel/s
FP16 (half)
157.3 TFLOPS
10.32 TFLOPS
FP32 (float)
157.3 TFLOPS
10.32 TFLOPS
FP64 (double)
2.458 TFLOPS
5.161 TFLOPS
Graphics Processor
GPU Name
MI450 256CU
GA100
Architecture
CDNA 5.0
Ampere
Foundry
TSMC
TSMC
Process Size
2 nm
7 nm
Transistors
320 billion
54.2 billion
Die Size
Unknown
826 mm²
Board Design
TDP
2300W
165W
Suggested PSU
2700 W
450 W
Outputs
No outputs
No outputs
Power Connectors
None
8-pin EPS
Graphics Features
DirectX
N/A
N/A
OpenGL
N/A
N/A
OpenCL
3.0
3.0
Vulkan
N/A
N/A
Shader Model
N/A
N/A
CUDA
-
8.0