AMD Instinct MI355X
The AMD Instinct MI355X is a CDNA 4 GPU in the Instinct MI350 series with 288 GB of HBM3E at 8 TB/s.
- Vendor
- AMD
- Architecture
- CDNA 4
- Memory
- 288 GB HBM3E
- Memory bandwidth (TB/s)
- 8 TB/s
- FP8 (TFLOPS)
- 5,000 TFLOPS
- FP4 (PFLOPS)
- 10.1 PFLOPS
- Power (W)
- 1,400 W
- Form factor
- OAM module
- Status
- Shipping
The MI355X is built on TSMC 3nm and 6nm with 185 billion transistors and 288 GB of HBM3E at 8 TB/s. It adds MXFP6 and MXFP4 support, rated at 10.1 PFLOPS each, at 1,400 W typical board power. AMD’s product page lists a launch date of June 12, 2025. It is an OAM module.
- Memory (GB)
- 288 GB
- Precision note (sparse or dense)
- OCP-FP8 5 PFLOPS is without sparsity; 10.1 PFLOPS with structured sparsity. MXFP4 10.1 PFLOPS (no sparsity variant listed).
- Launch
- Launch date June 12, 2025
- Vendor source
- amd.com
- Checked
Questions
How much memory does the AMD MI355X have?
The MI355X has 288 GB of HBM3E with 8 TB/s of memory bandwidth.
What is the MI355X’s FP8 and FP4 performance?
AMD lists OCP-FP8 at 5 PFLOPS without sparsity and 10.1 PFLOPS with structured sparsity, and MXFP4 at 10.1 PFLOPS.
How much power does the MI355X use?
AMD gives a typical board power of 1,400 W.
When did the AMD MI355X launch?
AMD’s product page lists a launch date of June 12, 2025.
Source
Every figure is taken from the vendor’s own datasheet, product page, technical documentation or announcement, linked on each chip with the date it was last checked. How we pick and check sources: editorial standards.