NVIDIA RTX A5000-12Q vs AMD Radeon Instinct MI355X
GPU Specs Compare
Graphics Card
Release Date
Apr 2021
Jun 2025
Generation
Quadro Ampere
Radeon Instinct
Type
Desktop
Professional
Bus Interface
PCIe 4.0 x16
PCIe 5.0 x16
Clock Speeds
Base Clock
1170 MHz
1000 MHz
Boost Clock
1695 MHz
2400 MHz
Memory Clock
2000 MHz
2000 MHz
Memory
Memory Size
12GB
288GB
Memory Type
GDDR6
HBM3e
Memory Bus
384bit
8192bit
Bandwidth
768.0GB/s
8.19TB/s
Render Config
SM Count
64
-
Shading Units
8192
16384
TMUs
256
1024
ROPs
96
0
Tensor Cores
256
1216
RT Cores
64
-
L1 Cache
128 KB (per SM)
32 KB (per CU)
L2 Cache
6 MB
32 MB
Compute Units
-
256
L3 Cache
-
256 MB
Theoretical Performance
Pixel Rate
162.7 GPixel/s
0 MPixel/s
Texture Rate
433.9 GTexel/s
2457.6 GTexel/s
FP16 (half)
27.77 TFLOPS
78.64 TFLOPS
FP32 (float)
27.77 TFLOPS
78.64 TFLOPS
FP64 (double)
433.9 GFLOPS
39.32 TFLOPS
Graphics Processor
GPU Name
GA102
MI350 256CU
Architecture
Ampere
CDNA 4.0
Foundry
Samsung
TSMC
Process Size
8 nm
3 nm
Transistors
28.3 billion
185 billion
Die Size
628 mm²
Unknown
Board Design
TDP
230W
1400W
Suggested PSU
550 W
1800 W
Outputs
4x DisplayPort 1.4a
No outputs
Power Connectors
1x 8-pin
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
6.7
N/A