AMD Radeon Instinct MI350X vs NVIDIA B300
GPU · Specs Compare
Graphics Card
Release Date
Jun 2025
Sep 2025
Generation
Radeon Instinct
Server Blackwell
Type
Professional
Desktop
Bus Interface
PCIe 5.0 x16
PCIe 5.0 x16
Clock Speeds
Base Clock
1000 MHz
1665 MHz
Boost Clock
2200 MHz
2032 MHz
Memory Clock
2000 MHz
2000 MHz
Memory
Memory Size
288GB
144GB
Memory Type
HBM3e
HBM3e
Memory Bus
8192bit
4096bit
Bandwidth
8.19TB/s
4.10TB/s
Render Config
Compute Units
256
—
Shading Units
16384
18944
TMUs
1024
592
ROPs
0
24
Tensor Cores
1024
592
L1 Cache
16 KB (per CU)
256 KB (per SM)
L2 Cache
16 MB
50 MB
L3 Cache
256 MB
—
SM Count
—
148
Theoretical Performance
Pixel Rate
0 MPixel/s
48.77 GPixel/s
Texture Rate
2252.8 GTexel/s
1202.9 GTexel/s
FP16 (half)
72.09 TFLOPS
1231.8 TFLOPS
FP32 (float)
72.09 TFLOPS
76.99 TFLOPS
FP64 (double)
36.04 TFLOPS
1202.9 GFLOPS
Graphics Processor
GPU Name
MI350 256CU
GB110
Architecture
CDNA 4.0
Blackwell Ultra
Foundry
TSMC
TSMC
Process Size
3 nm
5 nm
Transistors
185 billion
104 billion
Die Size
Unknown
Unknown
Board Design
TDP
1000W
1400W
Suggested PSU
1400 W
1800 W
Outputs
No outputs
No outputs
Power Connectors
None
—
Graphics Features
DirectX
N/A
N/A
OpenGL
N/A
N/A
OpenCL
3.0
3.0
Vulkan
N/A
N/A
Shader Model
N/A
N/A
CUDA
—
10.3
▲ Specs Compare
Data sourced from official specifications and benchmark tests.