AMD Instinct MI300X 192GB vs AMD Instinct MI300A 128GB
The Instinct MI300X delivers 33% more FP8 throughput than the Instinct MI300A (2,615 vs 1,961 TFLOPS dense). The Instinct MI300X also carries 64 GB more memory (192 GB vs 128 GB).
AMD Instinct MI300X 192GB
Full specs →AMD Instinct MI300A 128GB
Full specs →Specifications
Performance (TFLOPS)
FLOPS by Precision
What actually differs
Both GPUs launched in 2023: the Instinct MI300X on CDNA 3 and the Instinct MI300A on CDNA 3.
Dense throughput for the Instinct MI300X against the Instinct MI300A: FP64 82 vs 61 TFLOPS, FP32 163 vs 123 TFLOPS, FP16 1,307 vs 981 TFLOPS, FP8 2,615 vs 1,961 TFLOPS. Sparse figures, where the vendor publishes them, appear under each dense number in the performance table.
Memory is 192 GB against 128 GB, fed at 5.3 TB/s versus 5.3 TB/s. More memory per GPU means larger models fit before you have to shard across cards, which often matters more than raw TFLOPS for inference.
Power budgets are 750 W for the Instinct MI300X and 760 W for the Instinct MI300A. At FP32 that works out to 0.22 against 0.16 TFLOPS per watt.
For LLM training and inference, weight the FP8 and FP16 rows and memory capacity most heavily. For scientific and HPC workloads, the FP64 row is the one to read.
Frequently asked questions
Is the Instinct MI300X faster than the Instinct MI300A?
At FP8 precision the Instinct MI300X reaches 2,615 TFLOPS dense against 1,961 TFLOPS for the Instinct MI300A. The performance table on this page lists every published precision for both GPUs.
Which has more memory, the Instinct MI300X or the Instinct MI300A?
The Instinct MI300X carries 192 GB of VRAM versus 128 GB for the Instinct MI300A. Memory bandwidth is 5.3 TB/s for the Instinct MI300X and 5.3 TB/s for the Instinct MI300A.
How much power do the Instinct MI300X and the Instinct MI300A draw?
The Instinct MI300X is rated at 750 W TDP and the Instinct MI300A at 760 W. On FP32 throughput per watt, the Instinct MI300X is the more efficient part.
Can I rent the Instinct MI300X or the Instinct MI300A in the cloud?
Yes. Live cloud listings tracked by Flopper start at $0.50 per GPU hour. The rental pricing section on this page lists current providers and rates for both GPUs.
Where to Rent
AMD Instinct MI300X 192GB
| Provider | Configuration | Price/GPU-hr | Checked | |
|---|---|---|---|---|
 RunPod | 1× Instinct MI300X 192GB Community | $0.50 | just now | View → |
| RunPod | 1× Instinct MI300X 192GB | $2.39 | just now | View → |
 DigitalOcean | 1× Instinct MI300X 192GB | $2.59 | just now | View → |
| DigitalOcean | 8× Instinct MI300X 192GB | $2.59 | just now | View → |
 Crusoe | 1× Instinct MI300X 192GB | $3.45 | just now | View → |
 Oracle Cloud (OCI) | 1× Instinct MI300X 192GB | $6.00 | just now | View → |
 Microsoft Azure | 8× Instinct MI300X 192GB | $6.00 | just now | View → |
| Microsoft Azure | 8× Instinct MI300X 192GB | $6.00 | just now | View → |
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