Advantages

✔ Breakout flexibility (2x 400G-DR4 or native 800G-DR8)
✔ High-density 800G connectivity in QSFP-DD800 form factor
✔ Low-latency PAM4 efficiency for AI/ML workloads
✔ Dual MTP-12 APC connectors (better polarization control than UPC)

Considerations

⚠ Requires OS2 single-mode fiber (not compatible with MMF)
⚠ Dual MTP cabling needed (more complex than LC duplex)
⚠ Thermal management critical (finned top helps cooling)
⚠ Switch must support 800G-DR4/DR8 (e.g., Arista 7800R3)

✅ Arista 800G Switches (e.g., Arista 7800R3, 7388X5)
✅ Hyperscale data centers (cloud, AI/ML, HPC clusters)
✅ Breakout to 2x 400G-DR4 (for flexible deployment)
✅ 800G-DR8 native mode (for maximum bandwidth density)