NVIDIA A800 PCIe 80 GB vs AMD Radeon Instinct MI355X
GPU Specs Compare
Graphics Card
Release Date
Nov 2022
Jun 2025
Generation
Ampere
Radeon Instinct
Type
AI GPU
Professional
Bus Interface
PCIe 4.0 x16
PCIe 5.0 x16
Clock Speeds
Base Clock
1065 MHz
1000 MHz
Boost Clock
1410 MHz
2400 MHz
Memory Clock
1593 MHz
2000 MHz
Memory
Memory Size
80GB
288GB
Memory Type
HBM2e
HBM3e
Memory Bus
5120bit
8192bit
Bandwidth
2039GB/s
8.19TB/s
Render Config
SM Count
108
-
Shading Units
6912
16384
TMUs
432
1024
ROPs
160
0
Tensor Cores
432
1216
L1 Cache
192 KB (per SM)
32 KB (per CU)
L2 Cache
80 MB
32 MB
Compute Units
-
256
L3 Cache
-
256 MB
Theoretical Performance
Pixel Rate
225.6 GPixel/s
0 MPixel/s
Texture Rate
609.1 GTexel/s
2457.6 GTexel/s
FP16 (half)
77.97 TFLOPS
78.64 TFLOPS
FP32 (float)
19.49 TFLOPS
78.64 TFLOPS
FP64 (double)
9.746 TFLOPS
39.32 TFLOPS
Graphics Processor
GPU Name
GA100
MI350 256CU
Architecture
Ampere
CDNA 4.0
Foundry
TSMC
TSMC
Process Size
7 nm
3 nm
Transistors
54.2 billion
185 billion
Die Size
826 mm²
Unknown
Board Design
TDP
250W
1400W
Suggested PSU
600 W
1800 W
Outputs
No outputs
No outputs
Power Connectors
8-pin EPS
None
Graphics Features
DirectX
N/A
N/A
OpenGL
N/A
N/A
OpenCL
3.0
3.0
Vulkan
N/A
N/A
CUDA
8.0
-
Shader Model
N/A
N/A
📊 Benchmark
Blender
3,719
-