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1U rack server
Processor | Max: 64 Cores2x 4th or 5th Gen Intel Xeon Scalable
Memory | Max: 8TB32 ECC DDR5 RDIMM 4800Mhz/5600Mhz
Supports registered ECC DDR5 DIMMs only
8x 2.5" SAS4/SATA/NVMe (HDD/SSD) Max: 122.88 TB
10x 2.5" SAS4/SATA/NVMe (HDD/SSD) Max: 153.6 TB
14x EDSFF E3.S NVMe (G5) Max: 179.2 TB
16x EDSFF E3.S NVMe (G5) Max: 204.8 TB
2x 2.5" SAS/SATA/NVMe (HDD/SSD)
2x 2.5" EDSFF E3.S Gen5 NVMe (SSD)
S160 (SW RAID)
H965i, H755, H755N, H355, HBA355i, HBA355e
BOSS-N1
USB
1x OCP card 3.0 + 2x 1 GbE LOM with BCM5720 LAN controller
Note: The system allows either LOM card or an OCP card or both to be installed in the system.
iDRAC9 with Lifecycle Controller
PCIe Slots:3x PCIe (G4 /G5) slots
GPU:Up to 3 x 75 W SW
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The new Dell PowerEdge R660 is a 1U, two-socket rack server. Gain the performance you need with this full-featured enterprise server, designed to optimize even the most demanding workloads like dense database analytics and high-density virtualization.
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 Dell R660 is a 1U 2 Socket 32 DIMM server with 3 PCIe slots, 1 OCP, and 1 LOM. This server has 3 chassis options and supports SAS/SATA/NVMe drives. Below you will see more details about each chassis storage option and the drives supported.
| Chassis | Supported Configurations |
|---|---|
| No Drive Chassis | Zero drives (no backplane) |
| 8SFF |
|
| 10SFF + Optional Rear 2SFF Drive |
|
| NOTE: The Rear drive option is only shown in the 10SFF. | |
| Form Factor | Type | Speed | Rotational Speed | Capacities |
|---|---|---|---|---|
| 2.5" | vSAS | 12 Gb | SSD | 1.92 TB, 3.84 TB, 960 GB, 7.62 TB |
| 2.5" | SAS | 24 Gb | SSD | 1.92 TB, 1.6 TB, 800 GB, 3.84 TB, 960 GB, 7.68 TB |
| 2.5" | SATA | 6 Gb | SSD | 1.92 TB, 480 GB, 960 GB, 3.84 TB |
| 2.5" | NVMe | Gen4 | SSD | 1.6 TB, 3.2 TB, 6.4 TB, 1.92 TB, 3.84 TB, 15.63 TB, 7.68 TB, 800 GB, 400 GB |
| 2.5" | DC NVMe | Gen4 | SSD | 3.84 TB, 960 GB |
| 2.5" | SAS | 12 Gb | 10 K | 600 GB, 1.2 TB, 2.4 TB |
Up to two 4th or 5th Generation Intel Xeon Scalable processors, with up to 56 cores and optional Intel® QuickAssist Technology. 8470Q and 6458Q are supported only in liquid cooling configuration. Mixing of the processors is not recommended. If a liquid-cooled processor is installed in one socket, then the second processor used must be of the same type.

The Dell PowerEdge R660 supports Liquid Cooling and Air Cooling options.
The PowerEdge R660 system supports up to four sets of standard (STD) cooling fans or four sets of High-performance gold (HPR GOLD) cooling fans. The fan's selection is based on the TDP of the processor.
If rear drives are installed in the 10SFF Chassis you will need Gold Fans.
If you have a processor over 185W TDP then you will need the Direct Liquid Cooling Module installed.
For more information about cooling please refer to the installation manual of the R660.
This system has a few cooling shrouds for specific configurations. All air-cooling configurations require a CPU shroud. You must Install a PCH shroud for no riser configuration.
The Rear drive shroud is needed for air-cooling with 2x 2.5-inch rear-drive configuration.
If you plan to install an A2 GPU, you will need to install the blank on R1p riser for correct airflow.
32 DDR5 DIMM slots, supports RDIMM 8TB max, speeds up to 4800 MT/s or 5600 Mt/s with 5th Gen CPU
Supports registered ECC DDR5 DIMMs only.
| DIMM type | Rank | Capacity | DIMM rated voltage and speed | Operating Speed | |
|---|---|---|---|---|---|
| 1 DIMM per channel (DPC) | 2 DIMMs per channel (DPC) | ||||
| RDIMM | 1 R | 16 GB | DDR5 (1.1 V), 4800 MT/s | 4800 MT/s | 4400 MT/s |
| 2 R | 32 GB, 64 GB | DDR5 (1.1 V), 4800 MT/s | 4800 MT/s | 4400 MT/s | |
| 4 R | 128 GB | DDR5 (1.1 V), 4800 MT/s | 4800 MT/s | 4400 MT/s | |
| 8 R | 256 GB | DDR5 (1.1 V), 4800 MT/s | 4800 MT/s | 4400 MT/s | |
NOTE: If you are removing the memory module permanently, install a memory module blank if TDP >=250W. The procedure to install a memory module blank is similar to that of the memory module.
The PowerEdge R660 system supports up to two Network Interface Controller (NIC) ports embedded on the LAN on Motherboard (LOM) card and up to four ports integrated on the Open Compute Project (OCP) card.
The system allows either LOM card or an OCP card or both to be installed in the system.

The PowerEdge R660 have a no riser option. If no risers are installed you will need to make sure the PCH Air Shroud is installed for the correct air flow.
| PCIe Riser Configuration No. | Riser configuration | No. of Processors | PERC type supported | Rear Storage Possible |
|---|---|---|---|---|
| Config 0. | No RSR | 2 | Front PERC | No |
| Config 1. 3 x LP (Gen4) | R2A+R3A | 2 | Front PERC / PERC Adapter | No |
| Config 2. 3 x LP (2x LP Gen5 + 1x LP Gen4) | R2P+R3P | 2 | Front PERC | No |
| Config 3. 2 x 16 FH (Gen5) | R1P+R4P | 2 | Front PERC / PERC Adapter | No |
| Config 4. 3 x LP (2x LP Gen5 + 1x LP Gen4) | R2R+R3R | 1 | N/A | No |
| Config 5. 3 x LP (2x LP Gen4 + 1x LP SANPI Gen5) | R2A+R3Q | 2 | Front PERC / PERC Adapter | No |
| Config 6. 1 | R2Q (non A2) | 2 | Front PERC | No |
| Config 6. 2 x LP (Gen5) | R2Q (only for A2) | 2 | Front PERC | No |
| Config 7. 1 x16 LP (Gen5) | R3P | 2 | Front PERC | No |
| Config 8. 1 x LP (Gen4) | R2A | 1 | Front PERC / PERC Adapter | No |
| Config 9. 2 x 16 LP (Gen5) | R2S + R3S |
2 | N/A | No |
With 3 PCIe slots on the back of the server, you have the ability to fill all 3 PCIe slots with 1 Single Wide 75W GPU. If you plan to install the A2 GPU there is a special Air shroud for it. Install A2 blank on R1p riser for FH riser configuration with A2 GPU. Only the Risers with a P on them hold GPUs.

Dell RAID controller options offer performance improvements, including the fPERC solution. fPERC provides a base RAID HW controller without consuming a PCIe slot by using a small form factor and high-density connector to the base planar.
16G PERC Controller offerings are a heavy leverage of 15G PERC family. The Value and Value Performance levels carry over to 16G from 15G. New to 16G is the Avenger-based Premium Performance tier offering. This high-end offering drives IOPs performance and enhanced SSD performance.
| Supported storage controller cards | |
|---|---|
| Internal Controllers |
|
| External Controllers |
|
| Internal Boot |
|
| Software RAID |
|
| SAS Host Bus Adapters (HBA) |
|
The BOSS-N1 provides 2x HWRAID M.2 NVMe SSDs that are Hot-swappable with Single drive RAID 0 and dual drive RAID 1 support.
The BOSS card is not supported in all Thermal Conditions, When the BOSS Module is not added the BOSS Blank must be installed.

Two hot swap with full redundant AC or DC power supply units.
(List below serves as quick links to each section)