1U 2-Socket Rack Server — 4th/5th Gen Xeon Scalable, DDR5 8 TB, EDSFF Gen5 NVMe
The Dell PowerEdge R660 is Dell's flagship 1U, 2-socket rack server, built for the most demanding dense workloads. Supporting 4th and 5th Generation Intel Xeon Scalable processors with up to 64 cores, DDR5 memory up to 8 TB, E3.S Gen5 NVMe storage, PCIe Gen5, and optional direct liquid cooling, it delivers peak 1U performance for virtualisation, dense database analytics, and HCI environments.
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Supports up to two 4th Generation Intel Xeon Scalable (up to 56 cores each) or Intel Xeon Max processors, or two 5th Generation Intel Xeon Scalable processors with up to 64 cores and 5600 MT/s DDR5. Optional Intel QuickAssist Technology (QAT) accelerates encryption and compression.
32 RDIMM DDR5 slots support up to 8 TB registered ECC memory. Speed: up to 4800 MT/s with 4th Gen Xeon, 5600 MT/s with 5th Gen. Full support for advanced ECC workloads on both platforms.
Up to 16 × EDSFF E3.S Gen5 NVMe SSDs deliver maximum NVMe density in 1U (204.8 TB). Alternatively, 10 × 2.5-inch SAS4/SATA/NVMe bays provide mixed SAS/SATA/NVMe workload flexibility. Rear bays optional.
Up to 3 PCIe slots (Slot 1 and Slot 2: Gen5; Slot 3: Gen5/Gen4) plus one OCP 3.0 card slot. Supports NIC cards from 1GbE to 100GbE, storage controllers (PERC H965i), and up to 3 × 75W GPU accelerators.
Optional DLC enables higher TDP Intel Xeon configurations without acoustic and thermal constraints of air cooling. Requires rack manifolds and a Cooling Distribution Unit (CDU); Dell provides a complete DLC rack ecosystem.
Silicon root of trust embedded in the iDRAC, Multi-Factor Authentication, Secured Component Verification (hardware integrity check), cryptographically signed firmware, and SPDM-verified supply chain protect from factory to end of life.
The Dell PowerEdge R660 is the evolution of the acclaimed R650 — a 1U, dual-socket server engineered to deliver the highest per-rack compute density available. The Smart Flow chassis redesign with new airflow optimisation enables the R660 to support the highest-TDP 4th and 5th Generation Intel Xeon Scalable processors in air-cooled operation without performance derating.
E3.S NVMe Gen5 storage is one of the R660's most significant differentiators in the 1U segment. The 16-bay EDSFF configuration delivers up to 204.8 TB of raw NVMe capacity in a single rack unit — a configuration that would require multiple previous-generation servers. Sixteen PCIe Gen5-connected E3.S drives provide the storage bandwidth needed for NVMe-over-Fabrics targets, vSAN all-flash nodes, and high-density database deployments.
For high-memory workloads, 32 RDIMM slots accommodate registered DDR5 ECC memory with 5600 MT/s bandwidth when paired with 5th Generation Intel Xeon Scalable processors. 256 GB DDR5 RDIMMs bring the theoretical maximum to 8 TB — identical to the DL360 Gen11 from HPE, reflecting equivalent DIMM slot count across the 1U 2-socket segment.
Dell's iDRAC9 management controller provides the industry's most comprehensive out-of-band management experience at this tier: Redfish API, Quick Sync 2 wireless module, OpenManage Enterprise integration, APEX Flex on Demand consumption model support, and direct integration with VMware vCenter, Red Hat Ansible, Terraform, and ServiceNow for automation-first IT operations.
Peak 1U compute density with 64-core dual-socket processors and 8 TB DDR5 makes the R660 ideal for VMware vSphere, Hyper-V, and Nutanix AHV node deployments.
In-memory databases (Oracle, SQL Server) and analytics platforms benefit from 8 TB DDR5 and the high I/O bandwidth of EDSFF E3.S Gen5 NVMe storage.
Validated for VMware vSAN and VxRail hyper-converged configurations — E3.S Gen5 NVMe provides the all-flash throughput HCI platforms require.
High core density and PCIe Gen5 networking support make the R660 a strong CDN edge cache node and AI inference server for latency-sensitive applications.
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