AMD Radeon Instinct MI355X vs NVIDIA RTX A4000 Max-Q
GPU Specs Compare
Graphics Card
Release Date
Jun 2025
Apr 2021
Generation
Radeon Instinct
Ampere-MW
Type
Professional
Mobile
Bus Interface
PCIe 5.0 x16
PCIe 4.0 x16
Clock Speeds
Base Clock
1000 MHz
780 MHz
Boost Clock
2400 MHz
1395 MHz
Memory Clock
2000 MHz
1375 MHz
Memory
Memory Size
288GB
8GB
Memory Type
HBM3e
GDDR6
Memory Bus
8192bit
256bit
Bandwidth
8.19TB/s
352.0GB/s
Render Config
Compute Units
256
-
Shading Units
16384
5120
TMUs
1024
160
ROPs
0
80
Tensor Cores
1216
160
L1 Cache
32 KB (per CU)
128 KB (per SM)
L2 Cache
32 MB
4 MB
L3 Cache
256 MB
-
SM Count
-
40
RT Cores
-
40
Theoretical Performance
Pixel Rate
0 MPixel/s
111.6 GPixel/s
Texture Rate
2457.6 GTexel/s
223.2 GTexel/s
FP16 (half)
78.64 TFLOPS
14.28 TFLOPS
FP32 (float)
78.64 TFLOPS
14.28 TFLOPS
FP64 (double)
39.32 TFLOPS
223.2 GFLOPS
Graphics Processor
GPU Name
MI350 256CU
GA104
Architecture
CDNA 4.0
Ampere
Foundry
TSMC
Samsung
Process Size
3 nm
8 nm
Transistors
185 billion
17.4 billion
Die Size
Unknown
392 mm²
Board Design
TDP
1400W
80W
Suggested PSU
1800 W
-
Outputs
No outputs
Portable Device Dependent
Power Connectors
None
None
Graphics Features
DirectX
N/A
12 Ultimate (12_2)
OpenGL
N/A
4.6
OpenCL
3.0
3.0
Vulkan
N/A
1.3
Shader Model
N/A
6.8
CUDA
-
8.6