AMD Instinct MI300X VS AMD Instinct MI325X
Both the Instinct MI300X and Instinct MI325X are built on AMD's CDNA 3 architecture. This comparison helps you choose between different configurations within the same GPU family.
Instinct MI300X
Instinct MI325X
📊 Detailed Specifications Comparison
| Specification | Instinct MI300X | Instinct MI325X | Difference |
|---|---|---|---|
| Architecture & Design | |||
| Architecture | CDNA 3 | CDNA 3 | - |
| Process Node | 5nm + 6nm | 5nm | - |
| Target Market | datacenter | datacenter | - |
| Form Factor | OAM | OAM | - |
| Memory | |||
| VRAM Capacity | 192GB | 256GB | -25% |
| Memory Type | HBM3 | HBM3e | - |
| Memory Bandwidth | 5.3 TB/s | 6.0 TB/s | -12% |
| Memory Bus | 8192-bit | 8192-bit | - |
| Compute Units | |||
| Stream Processors | 19,456 | 19,456 | - |
| Performance (TFLOPS) | |||
| FP32 (Single Precision) | 163.4 TFLOPS | 163 TFLOPS | |
| FP16 (Half Precision) | 1307.4 TFLOPS | 2600 TFLOPS | -50% |
| FP64 (Double Precision) | 81.7 TFLOPS | N/A | |
| Power & Connectivity | |||
| TDP (Power) | 750W | 750W | |
| PCIe | PCIe 5.0 x16 | PCIe 5.0 x16 | - |
🎯 Use Case Recommendations
LLM & Large Model Training
AMD Instinct MI325X
Higher VRAM capacity and memory bandwidth are critical for training large language models. The Instinct MI325X offers 256GB compared to 192GB.
AI Inference
AMD Instinct MI325X
For inference workloads, performance per watt matters most. Consider the balance between FP16/INT8 throughput and power consumption.
Budget-Conscious Choice
AMD Instinct MI300X
Based on current cloud pricing, the Instinct MI300X starts at a lower hourly rate.
AMD Instinct MI300X is Best For:
- LLM inference at scale
- Large VRAM capacity
- CUDA-only software
AMD Instinct MI325X is Best For:
- AI training
- Large model inference
- CUDA-only software
Frequently Asked Questions
Which GPU is better for AI training: Instinct MI300X or Instinct MI325X?
For AI training, the key factors are VRAM size, memory bandwidth, and tensor core performance. The Instinct MI300X offers 192GB of HBM3 memory with 5.3 TB/s bandwidth, while the Instinct MI325X provides 256GB of HBM3e with 6.0 TB/s bandwidth. For larger models, the Instinct MI325X's higher VRAM capacity gives it an advantage.
What is the price difference between Instinct MI300X and Instinct MI325X in the cloud?
Cloud GPU rental prices vary by provider and region. Based on our data, Instinct MI300X starts at $1.99/hour while Instinct MI325X starts at $2.29/hour. This represents a 13% price difference.
Can I use Instinct MI325X instead of Instinct MI300X for my workload?
It depends on your specific requirements. If your model fits within 256GB of VRAM and you don't need the additional throughput of the Instinct MI300X, the Instinct MI325X can be a cost-effective alternative. However, for workloads requiring maximum memory capacity or multi-GPU scaling, the Instinct MI300X's architecture may be essential.
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