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Dell PowerEdge C6620

CurrentServers2U 4-node
Dell PowerEdge C66202U 4-node6 × SFF 2.5" bays2 sockets

The Dell PowerEdge C6620 is an ultra-dense 2-socket modular compute sled that installs into the 2U four-node PowerEdge C6600 chassis. Designed for high-performance computing (HPC) clusters, electronic design automation (EDA), financial modeling, and web hosting farms, the C6600/C6620 architecture packs up to 8 processors (up to 512 physical cores) and 64 DDR5 DIMMs into just 2U of rack space. Each independent C6620 sled provides dual 4th or 5th Gen Intel Xeon Scalable processors, 16 DDR5 memory slots, and PCIe Gen5 expansion. Pre-owned system buyers should verify node backplane mating connectors and chassis power supply capacities.

Also written as: PowerEdge C6620, Dell C6620, C6620 Compute Sled

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Specifications

BrandDell
FamilyPowerEdge C
Form factor2U 4-node
ReleasedApr 2023
Cpu sockets2
Cpu platformIntel Xeon Scalable 4th and 5th Gen (up to 2 processors per node, 300W TDP)
Memory slots16
Memory typeDDR5-4800 / DDR5-5600 RDIMM (per node)
Memory max (GB)1,024
Drive baysUp to 6x 2.5-inch NVMe/SAS/SATA or 2x E3.S NVMe drives per node (24x 2.5 in 2U chassis)
Pcie slotsUp to 2 PCIe Gen5 slots per node
Gpu supportNone supported
Network onboardOCP 3.0 mezzanine slot; 1x 1GbE iDRAC9 port per node
Power supplyShared dual or quad hot-plug 1800W, 2400W or 2800W Titanium in C6600 chassis

Generations

Compatible parts

RAID controllers

Boot devices

Works together

How the Dell PowerEdge C6620 connects to servers, storage and the network: 4 ways, with the parts and products on each path.

Fibre Channel SANiSCSI and NVMe/TCP over EthernetDirect-attached SASFile storage (NFS and SMB)

Fibre Channel SAN

Match the speed: 16Gb and 32Gb FC HBAs, switches and array ports work together, and each generation also runs one or two speeds below its own (a 32Gb port runs at 16Gb and 8Gb).

Adapters for the server (check the fit list)

Switches

Storage

Optics

Fibre Channel SAN: how it fits together

iSCSI and NVMe/TCP over Ethernet

Keep the speed the same at all three points: a 25GbE server, a 25GbE switch port and a 25GbE array port. Mixed speeds work but the slowest link sets the pace.

Adapters for the server (check the fit list)

iSCSI and NVMe/TCP over Ethernet: how it fits together

Direct-attached SAS

12Gb SAS uses Mini-SAS HD (SFF-8644) connectors; older 6Gb gear uses Mini-SAS (SFF-8088). Adapter cables exist, but the link runs at the slower speed.

Adapters for the server (check the fit list)

Storage

Direct-attached SAS: how it fits together

File storage (NFS and SMB)

Front-end ports face the clients; back-end ports (on scale-out systems) connect the nodes to each other and need their own switch pair.

Adapters for the server (check the fit list)

Storage

File storage (NFS and SMB): how it fits together

Plan and size it

Equivalent models from other brands

Buying a used C6620: what to check

Verify whether the listing includes individual C6620 sleds or the complete 2U C6600 chassis with power supplies. Inspect blind-mate backplane connectors for bent pins.

FAQ

How many C6620 nodes fit in a 2U chassis?

Up to four independent half-width C6620 compute sleds fit in a single 2U Dell PowerEdge C6600 chassis.

Does each node have its own iDRAC?

Yes, every C6620 sled features its own dedicated iDRAC9 management processor and network port.

Buying or selling C6620?

New, refurbished or used. Tell us the quantity and condition and we connect you with a vetted reseller in your region, usually within one working day.

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Sources