AMD Instinct MI300X
The AMD Instinct MI300X is AMD flagship generative AI and high-performance computing accelerator based on the CDNA 3 architecture. Built using advanced 3D chiplet packaging (combining 5nm and 6nm compute and I/O dies), it integrates an extraordinary 192GB of HBM3 memory delivering 5.3 TB/s of peak memory bandwidth and 896 GB/s bidirectional Infinity Fabric interconnect throughput. With native support for FP8, FP16, BF16, and TF32 precisions, it allows massive 70-billion-parameter large language models (LLMs) to run entirely on a single accelerator without tensor-parallel sharding. Used equipment buyers should inspect OAM mezzanine connector arrays and verify ROCm firmware compatibility.
Also written as: AMD Instinct MI300X OAM, MI300X 192GB, Instinct MI300X Accelerator
Specifications
| Brand | AMD |
|---|---|
| Family | Instinct |
| Form factor | OAM (OCP Accelerator Module) |
| Released | Dec 2023 |
| Gpu memory (GB) | 192 |
| Tdp (W) | 750 |
Generations
- Previous generation: AMD Instinct MI250X
Reference prices (last 14 days, updated 2026-10-27)
New: USD 21,000 (1 sighting, Oct 2026)
Used: USD 16,500 (1 sighting, Oct 2026)
All sightings
| Seller | Condition | Price | Note | Seen |
|---|---|---|---|---|
| serversupply.com | new | USD 21,000 | New OEM OAM accelerator module in factory protective carrier | 2026-10-27 |
| ebay.com | used | USD 16,500 | Tested working pull from 8-way OAM cluster, 100% ROCm passed | 2026-10-27 |
Prices seen on public listings on the dates shown, before tax and shipping. Not an offer.
Equivalent models from other brands
Buying a used MI300X: what to check
Inspect high-density OAM ball-grid socket contact pads for damage, verify Infinity Fabric 8-way link throughput under ROCm validation suites, check liquid cooling cold plate flatness, and ensure robust 750W power rail delivery.
FAQ
How much memory does the AMD Instinct MI300X provide?
It features 192GB of HBM3 memory with a peak bandwidth of 5.3 TB/s, more than double that of the H100.
What form factor does the MI300X use?
It uses the open-standard OCP Accelerator Module (OAM) form factor designed for 8-way universal baseboards.
What software stack runs on the MI300X?
It is powered by the open-source AMD ROCm software ecosystem with native support for PyTorch, vLLM, and Hugging Face.
Buying or selling MI300X?
New, refurbished or used. Tell us the quantity and condition and we connect you with a vetted reseller in your region, usually within one working day.
Sources
- AMD Instinct MI300X Accelerator Specifications, checked 2026-10-27