Flopper.io System Specification Sheet
September 26, 2026
flopper.io/system/amd-heliosAMD Helios
72x Instinct MI455X CDNA 5 rack 2026
Overview
1,450
FP8 PFLOPS Dense
31.1 TB
Aggregate Memory
1677.6 TB/s
Aggregate Bandwidth
—
Aggregate Power
Performance Metrics
| Precision | Peak (PFLOPS) | Per GPU (TFLOPS) | TFLOPS/W |
|---|---|---|---|
| FP8 | 1,450 | 20,133 | — |
| FP4 | 2,899 | 40,265 | — |
All figures are dense. Vendors commonly headline the sparse number, which is twice the dense one.
Configuration
- Accelerator
- Instinct MI455X OAM
- Count
- 72
- Memory per GPU
- 432 GB
- Bandwidth per GPU
- 23.3 TB/s
Power & Efficiency
- Aggregate Power
- —
- TDP per GPU
- —
- FP8 Efficiency
- —
- Aggregate Bandwidth
- 1677.6 TB/s
System Details
Vendor: AMD
Family: Helios
Architecture: CDNA 5
Form Factor: rack
Release Year: 2026
Process Node: —
Interconnect
UALink over Ethernet (UALoE) scale-up; Ultra Ethernet (UEC) scale-out; AMD Pensando DPUs