arista 7260X 7260CX3-64 vs NVIDIA Spectrum-2 SN3800
Side-by-side specifications from the vendors' own documents. The Arista 7260CX3-64 is a high-density 2U fixed datacenter spine switch offering 64 ports of wire-speed 40G/100G QSFP28. The NVIDIA Spectrum-2 SN3800 is a 2U high-density datacenter spine switch providing 64 ports of 100GbE QSFP28 (or 32 ports of 200GbE QSFP56).
| arista 7260X 7260CX3-64 | NVIDIA Spectrum-2 SN3800 | |
|---|---|---|
| Brand | arista | NVIDIA |
| Status | current | current |
| Released | May 2018 | Mar 2019 |
| Form factor | 2U fixed switch | 2U fixed switch |
| Ports | 64x 40G/100G QSFP28 ports | 64x 100GbE QSFP28 ports (or 32x 200GbE QSFP56 ports) |
| Switching capacity | 12.8 Tbps / 4.3 Bpps forwarding rate | 12.8 Tbps / 8.33 Bpps forwarding capacity |
| Form factor | 2U rack mount | 2U rack enclosure with front-to-back or back-to-front cooling |
| Latency | Cut-through latency under 900 nanoseconds | — |
| Power supplies | Up to four hot-swappable 1+1 redundant power supplies | Dual redundant hot-swappable AC or DC power supplies |
| Buffer | — | 42 MB fully shared dynamic packet buffer |
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