AMD Radeon Pro W6800X Duo vs AMD Radeon Instinct MI355X
GPU · Specs Compare
Graphics Card
Release Date
Aug 2021
Jun 2025
Generation
Radeon Pro Mac
Radeon Instinct
Type
Desktop
Professional
Bus Interface
Apple MPX
PCIe 5.0 x16
Clock Speeds
Base Clock
1800 MHz
1000 MHz
Boost Clock
1967 MHz
2400 MHz
Memory Clock
2000 MHz
2000 MHz
Memory
Memory Size
32GB
288GB
Memory Type
GDDR6
HBM3e
Memory Bus
256bit
8192bit
Bandwidth
512.0GB/s
8.19TB/s
Render Config
Compute Units
60
256
Shading Units
3840
16384
TMUs
240
1024
ROPs
96
0
RT Cores
60
—
L1 Cache
128 KB per Array
32 KB (per CU)
L2 Cache
4 MB
32 MB
L3 Cache
128 MB
256 MB
Tensor Cores
—
1216
Theoretical Performance
Pixel Rate
188.8 GPixel/s
0 MPixel/s
Texture Rate
472.1 GTexel/s
2457.6 GTexel/s
FP16 (half)
30.21 TFLOPS
78.64 TFLOPS
FP32 (float)
15.11 TFLOPS
78.64 TFLOPS
FP64 (double)
944.2 GFLOPS
39.32 TFLOPS
Graphics Processor
GPU Name
Navi 21
MI350 256CU
GPU Variant
Navi 21 Pro-XLA
—
Architecture
RDNA 2.0
CDNA 4.0
Foundry
TSMC
TSMC
Process Size
7 nm
3 nm
Transistors
26.8 billion
185 billion
Die Size
520 mm²
Unknown
Board Design
TDP
400W
1400W
Suggested PSU
800 W
1800 W
Outputs
1x HDMI 2.14x Thunderbolt
No outputs
Power Connectors
None
None
Graphics Features
DirectX
12 Ultimate (12_2)
N/A
OpenGL
4.6
N/A
OpenCL
2.1
3.0
Vulkan
1.3
N/A
Shader Model
6.7
N/A
Benchmark
Blender
1,422
—
▲ Specs Compare
Data sourced from official specifications and benchmark tests.