Dell PowerEdge C6420 vs Lenovo ThinkSystem SD650
Side-by-side specifications from the vendors' own documents. The Dell PowerEdge C6420 is an enterprise 2U 4-node server powered by 2 Intel Xeon Scalable 1st Gen (Skylake) and 2nd Gen (Cascade Lake) and 16 memory slots supporting up to 1024GB DDR4-2666 / DDR4-2933 RDIMM (per node). The Lenovo ThinkSystem SD650 is a direct water-cooled dual-socket compute tray designed for extreme HPC clusters and supercomputers.
| Dell PowerEdge C6420 | Lenovo ThinkSystem SD650 | |
|---|---|---|
| Brand | Dell | Lenovo |
| Status | end-of-sale | end-of-sale |
| Released | Jul 2017 | Jun 2018 |
| Form factor | 2U 4-node | dense node |
| Cpu sockets | 2 | — |
| Cpu platform | Intel Xeon Scalable 1st Gen (Skylake) and 2nd Gen (Cascade Lake), up to 28 cores, 205W TDP | — |
| Memory slots | 16 | — |
| Memory type | DDR4-2666 / DDR4-2933 RDIMM (per node) | — |
| Memory max (GB) | 1,024 | — |
| Drive bays | Up to 6x 2.5-inch SAS/SATA/NVMe or 3x 3.5-inch SAS/SATA drives per node (24x 2.5 or 12x 3.5 in 2U) | Up to 2x 2.5-inch non-hot-swap SATA/NVMe SSDs or 2x internal M.2 boot SSDs |
| Pcie slots | Up to 2 PCIe Gen3 slots per node | — |
| Gpu support | None supported | — |
| Network onboard | Network Daughter Card (NDC) slot; 1x 1GbE iDRAC9 port per node | — |
| Power supply | Shared dual hot-plug 1600W, 2000W or 2400W Platinum in C6400 chassis | Shared power delivered through the water-cooled enclosure backplane |
| Processor | — | Up to 2x 1st or 2nd Gen Intel Xeon Scalable processors up to 28 cores each (up to 205W TDP) |
| Memory | — | 16x DDR4 DIMM slots supporting up to 1TB DDR4-2933 ECC RDIMM |
| Expansion slots | — | 1x PCIe 3.0 x16 slot for high-speed fabric adapter (InfiniBand EDR / Omni-Path) |
| Network | — | Integrated Intel or Mellanox mezzanine adapter supporting 100Gb/s fabrics |
| Management | — | Lenovo XClarity Controller (XCC) |
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