AMD Radeon Instinct MI300X vs AMD Radeon RX 7400
GPU Specs Compare
Graphics Card
Release Date
Dec 2023
Aug 2025
Generation
Radeon Instinct
Navi III
Type
Professional
Desktop
Bus Interface
PCIe 5.0 x16
PCIe 4.0 x8
Clock Speeds
Base Clock
1000 MHz
1452 MHz
Boost Clock
2100 MHz
2300 MHz
Memory Clock
1300 MHz
2250 MHz
Memory
Memory Size
192GB
8GB
Memory Type
HBM3
GDDR6
Memory Bus
8192bit
128bit
Bandwidth
5.32TB/s
288.0GB/s
Render Config
Compute Units
304
28
Shading Units
19456
1792
TMUs
1216
112
ROPs
0
64
Tensor Cores
1216
-
L1 Cache
16 KB (per CU)
128 KB per Array
L2 Cache
16 MB
2 MB
L3 Cache
256 MB
64 MB
RT Cores
-
28
Theoretical Performance
Pixel Rate
0 MPixel/s
147.2 GPixel/s
Texture Rate
2553.6 GTexel/s
257.6 GTexel/s
FP16 (half)
81.72 TFLOPS
32.97 TFLOPS
FP32 (float)
81.72 TFLOPS
16.49 TFLOPS
FP64 (double)
40.86 TFLOPS
515.2 GFLOPS
Graphics Processor
GPU Name
Aqua Vanjaram
Navi 33
Architecture
CDNA 3.0
RDNA 3.0
Foundry
TSMC
TSMC
Process Size
5 nm
6 nm
Transistors
153 billion
13.3 billion
Die Size
1017 mm²
204 mm²
GPU Variant
-
Navi 33
Board Design
TDP
750W
43W
Suggested PSU
1150 W
200 W
Outputs
No outputs
1x HDMI 2.1a3x DisplayPort 2.1
Power Connectors
None
1x 6-pin
Graphics Features
DirectX
N/A
12 Ultimate (12_2)
OpenGL
N/A
4.6
OpenCL
3.0
2.2
Vulkan
N/A
1.3
Shader Model
N/A
6.8