Dell PowerEdge R820 vs Lenovo ThinkSystem SR850
Side-by-side specifications from the vendors' own documents. The PowerEdge R820 integrates dense four-socket Intel Xeon E5-4600 compute into a space-efficient 2U chassis. The ThinkSystem SR850 was Lenovo's dense 2U four-socket enterprise rack server designed for in-memory databases (SAP HANA), heavy virtualization, and mission-critical enterprise resource planning (ERP).
| Dell PowerEdge R820 | Lenovo ThinkSystem SR850 | |
|---|---|---|
| Brand | Dell | Lenovo |
| Status | end-of-support | end-of-sale |
| Released | Jun 2012 | Jul 2017 |
| Form factor | 2U rack | 2U rack |
| Cpu sockets | 4 | 4 |
| Cpu platform | Intel Xeon E5-4600 and E5-4600 v2 series processors | Up to 4 Intel Xeon Scalable 1st Gen (Skylake-SP) or 2nd Gen (Cascade Lake-SP) processors up to 205W TDP |
| Memory slots | 48 | 48 |
| Memory type | DDR3 ECC RDIMM/LRDIMM up to 1866 MT/s | DDR4-2666 / DDR4-2933 RDIMM / LRDIMM |
| Drive bays | Up to 16x 2.5in SAS/SATA drives | Up to 16x 2.5-inch SFF hot-swap bays (supporting up to 8 NVMe AnyBay drives) |
| Pcie slots | Up to 7x PCIe Gen3 slots | Up to 8 PCIe 3.0 slots plus dedicated LOM slot |
| Power supply | Dual hot-plug redundant PSUs (750W, 1100W, 1600W) | Dual redundant 1100W / 1600W / 2000W AC 80 PLUS Platinum hot-swap power supplies |
| Memory max (GB) | — | 6,144 |
| Network onboard | — | Modular LOM slot (1GbE/10GbE) plus dedicated 1GbE XClarity management port |
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