---
title: "800G Is Shipping: What's Actually Available and What You Can Deploy Today"
type: new_product
target_audience: technical
score: 9/10
---

When a new generation of optical modules ships, there's a gap between "shipping" and "available for your environment." 800G is shipping. Understanding the difference between what's on a datasheet and what's production-ready for a specific use case takes more precision than the press releases provide.

The form factors matter first. 800G pluggables come in two physical formats: OSFP (Octal Small Form Factor Pluggable) and QSFP-DD800. These are not interchangeable. OSFP is the larger module, with better thermal headroom — up to 15W versus around 12W for QSFP-DD800. Most 800G switch platforms shipping today use OSFP ports. QSFP-DD800 platforms are arriving in 2026 but are in early deployment. Before ordering 800G modules, verify which form factor your switch requires.

The speed is achieved through different lane architectures. 800GBASE-SR8 uses eight lanes of 100G each over OM5 or OM4 multimode fiber with MPO-16 connectors. 800GBASE-DR8 uses eight lanes of 100G over OS2 single-mode fiber with MPO-16 connectors at up to 500m. 800GBASE-FR8 extends single-mode reach to 2km over eight wavelengths. Each is a different electrical and optical architecture. An 800G SR8 is not a direct replacement for 800G DR8 — the fiber plant, connector type, and switch port configuration are all different.

The switch ASICs driving 800G ports are predominantly NVIDIA Spectrum-4 and Broadcom Tomahawk 5 in current deployments. Both support 800G OSFP natively. Arista's 7060X6 series, Cisco Nexus platforms based on Cisco Silicon One G200, and various white-box platforms using these merchant ASICs are where you'll find actual 800G deployments in production today. If you're evaluating 800G, verify the specific ASIC and software release — not just the platform family.

The application scope is currently narrow. 800G is primarily deployed in two contexts: AI/ML training clusters where GPU-to-GPU bandwidth drives fabric requirements, and hyperscale spine layers where port density and power efficiency at 800G justify the premium. An enterprise data center running SQL databases and web applications has no performance argument for 800G in 2026. The physics works, the economics don't. 400G DR4 at $25-40 per port is the right answer for general enterprise spine until 800G prices reach a comparable level.

For AI/ML fabric, the math is different. A single DGX H100 system has eight 400G or eight 800G HDR network ports depending on the InfiniBand variant, plus multiple 10/25G management paths. Connecting pods of these systems requires the highest bandwidth-per-rack possible. At 800G with 128-port switches, a single 2RU switch handles the entire port count for a 16-node H100 cluster with full bisection bandwidth. At 400G, you need multiple switches plus additional uplinks. The density argument at AI scale is real.

Module pricing in mid-2026 for production 800G OSFP SR8: OEM prices from the major platform vendors run $1,500-2,500 per module. Compatible options from tier-1 vendors are appearing at $600-1,200, though the compatible 800G ecosystem is substantially thinner than the 400G compatible ecosystem. Fewer manufacturers, shorter track records, and platform validation that's still being established. The guidance for 800G compatible at this stage is the same as it was for 400G ZR in 2021: ask for the specific platform validation matrix, verify the test data yourself, and start with a pilot before committing to a large batch.

The fiber infrastructure question is often where 800G hits a wall. 800GBASE-SR8 uses MPO-16 connectors, not MPO-12. If your existing multimode fiber infrastructure uses MPO-12 pre-terminated assemblies — which covers most enterprise MMF installed before 2020 — you cannot plug 800G SR8 modules directly into it. You need either MPO-16 assemblies (expensive, require re-cabling) or 800GBASE-DR8 on single-mode fiber. Many organizations evaluating 800G for existing campus data centers discover this constraint after reviewing the spec sheet, not before. Check your installed fiber and connector inventory before the procurement conversation.

The DOM monitoring profile for 800G differs from 400G. Eight TX lanes instead of four means eight sets of power readings, per-lane bias current, per-lane temperature data. If your network management system pulls DOM data via SNMP or streaming telemetry, verify it handles the expanded 800G DOM structure. Some older NMS platforms have hardcoded assumptions about QSFP28 lane count that fail silently on 800G modules rather than returning an error.

Interoperability between manufacturers at 800G is less established than at 400G. IEEE 802.3df standardizes 800GBASE-SR8 and 800GBASE-DR8, but the initial implementations came from a small number of manufacturers and were deployed in validated pairings before broad third-party testing was possible. By mid-2026, the major platform/module combinations are well-characterized. Mixing OSFP modules from different manufacturers on the same switch is generally fine for SR8 and DR8 (both are defined optical specs with clear compliance testing). The edge cases are in 800G coherent and proprietary higher-reach variants, where firmware interaction matters more.

Power consumption: an 800G OSFP SR8 draws approximately 10-12W per module. A 128-port 800G switch draws 10-12kW just in optics, before the ASIC and platform overhead. Compare to a 32-port 400G switch drawing 1-3kW in direct-detect optics. The power infrastructure requirements for AI fabric are not incremental — they require a different data center PDU density, cooling design, and power delivery architecture. 800G deployments go alongside significant infrastructure investment in power and cooling, not just in the networking layer.

The roadmap beyond 800G is 1.6T, which is in draft standardization and initial sampling from a handful of manufacturers. The lane architecture moves to 200G per lane, which requires a new generation of DSP and SerDes. Practical deployment of 1.6T is realistically 2027-2028 at the earliest. If you're making 800G decisions today, you're not racing ahead of the curve — you're at the beginning of the mainstream adoption slope, not the bleeding edge.

The right questions before a purchase: What ASIC and switch platform? What fiber plant — MMF with MPO-12 or SMF? What software version? Is the module vendor on the platform's tested vendor list for your specific linecard? What's the DOA rate history for 800G OSFP from this vendor? Those questions determine whether an 800G deployment is straightforward or expensive.
