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1U rack server
Processor | Max: 32 Cores2x 4th Gen Intel Xeon Scalable
Memory | Max: 1TB16 ECC DDR5 RDIMM 4800Mhz
Storage | Max: 153.6TB4 LFF, 8 or 10 SFF SAS4/SATA (HDD/SSD) NVMe
Rear Drives | Max: 15.2TB2 SFF SAS/SATA (HDD/SSD) NVMe
Storage Controller:S160, H965i, H755, H755N, H355, HBA355i, HBA355e
Boot Options:BOSS-N1 (Cold Swap), USB
Networking Options (NOC):1 x OCP card 3.0 + 2 x 1 GbE LOM card
Remote Management:iDRAC9 with Lifecycle Controller
PCIe Slots:1 Socket - 1 x16 Gen4 + 1 x8 Gen5
2 Socket - 1 x16 Gen4 + 2 x8 Gen4 or 1 x16 Gen5 + 1 x8 Gen5
None
Buy the performance and density you need
The new Dell PowerEdge R660xs is a 1U, two-socket rack server. Buy the best fit in dense performance with this purpose-built 1U system. Focused on delivering the latest technology to power the most popular applications and workloads used by businesses today, including virtualization, scale out-database and high performance compute. All delivered in a thoughtfully crafted platform that will provide dense compute that fits in your current infrastructure.
The Dell PowerEdge R660xs offers compelling performance in a purpose-built system with the latest PCIe Gen 5 bandwidth and storage to support:
The Dell OpenManage™ systems management portfolio delivers a secure, efficient, and comprehensive solution for PowerEdge servers. Simplify, automate and centralize one-to-many management with the OpenManage Enterprise console and iDRAC.
Security is integrated into every phase of the PowerEdge lifecycle, including protected supply chain and factory-to-site integrity assurance. Silicon-based root of trust anchors end-to-end boot resilience while Multi-Factor Authentication (MFA) and role-based access controls ensure trusted operations

The following lists the features and functions that are in the upcoming 4th Generation Intel® Xeon Scalable Processor offering:

There are two heat sinks, the standard, and High-Performance heat sink. There is also a Standard Fan and a Gold Fan. These Heat Sinks and Fans will change based on Processor TDP and Configuration. Up to 7 hot-swappable fans
The “Thermal Solution Configuration” in the manual below will provide more details about the cooling of the system.

To ensure optimal performance of your system, observe the following general guidelines when configuring your system memory. If your system's memory configuration fails to observe these guidelines, your system might not boot, stop responding during memory configuration, or operate with reduced memory.
| DIMM Type | DIMM Rank | DIMM Capacity | Single Processor | Dual Processor | ||
|---|---|---|---|---|---|---|
| Min memory capacity | Max memory capacity | Min memory capacity | Max memory capacity | |||
| RDIMM | Single Rank | 16 GB | 16 GB | 128 GB | 32 GB | 256 GB |
| Dual Rank | 32 GB | 32 GB | 256 GB | 64 GB | 512 GB | |
| 64 GB | 64 GB | 512 GB | 128 GB | 1 TB | ||
There are 6 Riser Configurations, each one being a little different than the last. Some risers provide PCIe Gen 5 Slots while most provide PCIe Gen 4 slots. Configuration 1 is the only config that allows all three PCIe slots to be accessible. Configuration 4 is the only config to support rear drives and a PCIe slot. Not all PCIe configs provide PCIe x16 slots.
| Configurations | Expansion card risers | PCIe Slots | Controlling processor | Height | Length | Slot width |
|---|---|---|---|---|---|---|
| Config 0. | No riser | NA | NA | NA | NA | NA |
| Config 1. with 3x LP | R1a | 1 | Processor 1 | Low Profile | Half length | x16 |
| R2a | 2 and 3 | Processor 2 | Low Profile | Half length | x8 + x8 | |
| Config 2. with 2x LP | R1a | 1 | Processor 1 | Low Profile | Half length | x16 |
| R2e | 2 (Gen5) | Processor 2 | Low Profile | Half length | x16 | |
| Config 3. with 1x LP | R1a | 1 | Processor 1 | Low Profile | Half length | x16 |
| Config 4. with 1x LP | R1a + Rear drives | 1 | Processor 1 | Low Profile | Half length | x16 |
| Config 5. with 2x LP | R1a | 1 | Processor 1 | Low Profile | Half length | x16 |
| R2d | 2 (Gen5) | Processor 1 | Low Profile | Half length | x8 | |
| Config 6. with 2x LP | R1b | 1 | Processor 1 | Low Profile | Half length | x8 |
| R2e | 2 (Gen 5) |
Processor 2 | Low Profile | Half length | x16 |
Riser 1a
Riser 1b
Riser 2a
Riser 2d
Riser 2e
You have two options for networking support that can be used at the same time. The OCP Mezz 3.0 (supported by x8 PCIe 4.0 lanes), and the LOM 2x 1GB ports. These two networking options help free up the 3 limited PCIe slots on the 1U Rack server. The OCP card can handle up to 25GbE cards with up to 4 ports

The Gen 16 Dell Server supports the PERC 11 and PERC 12 Cards. It’s recommended to save a PCIe slot by adding fPERC’s to the system for RAID control. Another thing standard on the Gen 16 systems is the ability to install a BOOT Device. The BOSS-N1 holds 2xM.2 SSD drives and has its own dedicated riser and riser slot. The BOSS-N1 can hold the boot or the Hypervisor. With 2 4880GB or 960GB cards installed, you'll have plenty of room for storage.
| Performance Level | Controller and Description |
|---|---|
| Entry | S160 |
| Value | H355, HBA355 (internal/external) |
| Value Performance | H755, H755N |
| Premium Performance | H965i, Avenger 1 Memory: 8GB DDR4 NV cache 72-bit memory 2133 MHz Low profile form factors Dual A15 1.2 GHz CPU X8PCIe 3.0, x8 12Gb SAS |

Boot Optimized Storage Subsystem (BOSS-N1)
Internal USB
The PowerEdge R660xs system supports up to two AC or DC power supply units (PSUs).
(List below serves as quick links to each section)