arista 7260X 7260CX3-64 vs NVIDIA Spectrum-3 SN4600
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-3 SN4600 is a 2U cloud-scale spine and leaf switch delivering 64 ports of 100G/200G QSFP56 (or 32 ports of 400G QSFP-DD).
| arista 7260X 7260CX3-64 | NVIDIA Spectrum-3 SN4600 | |
|---|---|---|
| Brand | arista | NVIDIA |
| Status | current | current |
| Released | May 2018 | Apr 2020 |
| Form factor | 2U fixed switch | 2U fixed switch |
| Ports | 64x 40G/100G QSFP28 ports | 64x 100G/200G QSFP56 or 32x 400G QSFP-DD ports |
| Switching capacity | 12.8 Tbps / 4.3 Bpps forwarding rate | 12.8 Tbps / 8.4 Bpps forwarding capacity |
| Form factor | 2U rack mount | — |
| Latency | Cut-through latency under 900 nanoseconds | Under 400 nanoseconds low cut-through latency |
| Power supplies | Up to four hot-swappable 1+1 redundant power supplies | — |
| Silicon | — | NVIDIA Spectrum-3 ASIC with 64 MB fully shared dynamic buffer |
| Cooling and power | — | Dual hot-swappable AC/DC power supplies and reversible fans |
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