Product Compare

NVIDIA A16 PCIe vs AMD Radeon Instinct MI455X

GPU GPU
Graphics Card
Release Date Apr 2021 Jul 2026
Generation Tesla Radeon Instinct
Type Desktop Desktop
Bus Interface PCIe 4.0 x8 PCIe 6.0 x16
Clock Speeds
Base Clock 885 MHz 1000 MHz
Boost Clock 1695 MHz 2400 MHz
Memory Clock 1812 MHz 1900 MHz
Memory
Memory Size 16GB 432GB
Memory Type GDDR6 HBM4
Memory Bus 128bit 24576bit
Bandwidth 231.9GB/s 23.3TB/s
Render Config
SM Count 10
Shading Units 1280 32768
TMUs 40 1024
ROPs 32 0
Tensor Cores 40
RT Cores 10
L1 Cache 128 KB (per SM) 32 KB (per CU)
L2 Cache 2 MB 192 MB
Compute Units 256
Theoretical Performance
Pixel Rate 54.24 GPixel/s 0 MPixel/s
Texture Rate 67.80 GTexel/s 2457.6 GTexel/s
FP16 (half) 4.339 TFLOPS 157.3 TFLOPS
FP32 (float) 4.339 TFLOPS 157.3 TFLOPS
FP64 (double) 135.6 GFLOPS 2.458 TFLOPS
Graphics Processor
GPU Name GA107 MI450 256CU
Architecture Ampere CDNA 5.0
Foundry Samsung TSMC
Process Size 8 nm 2 nm
Transistors Unknown 320 billion
Die Size Unknown Unknown
Board Design
TDP 250W 2300W
Suggested PSU 600 W 2700 W
Outputs No outputs No outputs
Power Connectors 8-pin EPS None
Graphics Features
DirectX 12 Ultimate (12_2) N/A
OpenGL 4.6 N/A
OpenCL 3.0 3.0
Vulkan 1.3 N/A
CUDA 8.6
Shader Model 6.6 N/A