NVIDIA Rubin GPU vs AMD Radeon Instinct MI300X
GPU · Specs Compare
Graphics Card
Release Date
Jan 2026
Dec 2023
Generation
Server Rubin
Radeon Instinct
Type
Desktop
Professional
Bus Interface
PCIe 6.0 x16
PCIe 5.0 x16
Clock Speeds
Base Clock
700 MHz
1000 MHz
Boost Clock
2267 MHz
2100 MHz
Memory Clock
2695 MHz
1300 MHz
Memory
Memory Size
288GB
192GB
Memory Type
HBM4
HBM3
Memory Bus
16384bit
8192bit
Bandwidth
22.1TB/s
5.32TB/s
Render Config
SM Count
224
—
Shading Units
28672
19456
TMUs
896
1216
ROPs
24
0
Tensor Cores
896
1216
L1 Cache
256 KB (per SM)
16 KB (per CU)
L2 Cache
128 MB
16 MB
Compute Units
—
304
L3 Cache
—
256 MB
Theoretical Performance
Pixel Rate
54.41 GPixel/s
0 MPixel/s
Texture Rate
2031.2 GTexel/s
2553.6 GTexel/s
FP16 (half)
260.0 TFLOPS
81.72 TFLOPS
FP32 (float)
130.0 TFLOPS
81.72 TFLOPS
FP64 (double)
32.50 TFLOPS
40.86 TFLOPS
Graphics Processor
GPU Name
GR100
Aqua Vanjaram
Architecture
Rubin
CDNA 3.0
Foundry
TSMC
TSMC
Process Size
3 nm
5 nm
Transistors
336 billion
153 billion
Die Size
1456 mm²
1017 mm²
Board Design
TDP
2300W
750W
Suggested PSU
2700 W
1150 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
CUDA
10.7
—
Shader Model
N/A
N/A
▲ Specs Compare
Data sourced from official specifications and benchmark tests.