AMD Radeon Instinct MI300A vs NVIDIA Rubin GPU
GPU · Specs Compare
Graphics Card
Release Date
Dec 2023
Jan 2026
Generation
Radeon Instinct
Server Rubin
Type
Desktop
Desktop
Bus Interface
PCIe 5.0 x16
PCIe 6.0 x16
Clock Speeds
Base Clock
1000 MHz
700 MHz
Boost Clock
2100 MHz
2267 MHz
Memory Clock
2525 MHz
2695 MHz
Memory
Memory Size
192GB
288GB
Memory Type
HBM3
HBM4
Memory Bus
8192bit
16384bit
Bandwidth
10.3TB/s
22.1TB/s
Render Config
Compute Units
304
—
Shading Units
19456
28672
TMUs
1216
896
ROPs
0
24
Tensor Cores
1216
896
L1 Cache
16 KB (per CU)
256 KB (per SM)
L2 Cache
16 MB
128 MB
L3 Cache
256 MB
—
SM Count
—
224
Theoretical Performance
Pixel Rate
0 MPixel/s
54.41 GPixel/s
Texture Rate
2554 GTexel/s
2031.2 GTexel/s
FP16 (half)
653.7 TFLOPS
260.0 TFLOPS
FP32 (float)
81.72 TFLOPS
130.0 TFLOPS
FP64 (double)
81.72 TFLOPS
32.50 TFLOPS
Graphics Processor
GPU Name
Aqua Vanjaram
GR100
Architecture
CDNA 3.0
Rubin
Foundry
TSMC
TSMC
Process Size
5 nm
3 nm
Transistors
153 billion
336 billion
Die Size
1017 mm²
1456 mm²
Board Design
TDP
750W
2300W
Suggested PSU
1150 W
2700 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
—
10.7
▲ Specs Compare
Data sourced from official specifications and benchmark tests.