Cisco UCS B420 M4 vs Lenovo ThinkSystem SN850
Side-by-side specifications from the vendors' own documents. The Cisco UCS B420 M4 was a full-width 4-socket blade server powered by Intel Xeon E5-4600 v3 and v4 processors. The Lenovo ThinkSystem SN850 is a full-wide 4-socket blade server engineered for high-density virtualization, large databases, and in-memory analytics.
| Cisco UCS B420 M4 | Lenovo ThinkSystem SN850 | |
|---|---|---|
| Brand | Cisco | Lenovo |
| Status | end-of-support | end-of-sale |
| Released | Sep 2014 | Jul 2017 |
| Form factor | blade | blade |
| Processor | Up to 4x Intel Xeon E5-4600 v3 or v4 processors up to 22 cores each | Up to 4x 1st or 2nd Gen Intel Xeon Scalable processors up to 28 cores each (up to 165W TDP) |
| Memory | 48x DDR4 DIMM slots supporting up to 3TB DDR4-2400 memory | 48x DDR4 DIMM slots (12 per CPU) supporting up to 6TB DDR4-2933 ECC RDIMM/LRDIMM |
| Drive bays | Up to 4x hot-swap 2.5-inch SAS/SATA/SSD drives | Up to 4x 2.5-inch SAS/SATA/NVMe hot-swap SSDs plus dual internal M.2 boot modules |
| Mezzanine slots | Up to 3x mezzanine slots for Cisco VIC 1340 adapters | — |
| Network | Cisco UCS Virtual Interface Cards delivering up to 160Gbps unified fabric | Supports high-density multi-port 10GbE, 25GbE, and 16Gb Fibre Channel mezzanine adapters |
| Chassis compatibility | Cisco UCS 5108 Blade Server Chassis | — |
| Management | Cisco UCS Manager | Lenovo XClarity Controller (XCC) |
| Expansion slots | — | 4x PCIe 3.0 x16 I/O mezzanine connectors routing to all four chassis fabric switches |
| Power supply | — | Shared power delivered through the Flex System Enterprise Chassis backplane |
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