Dell PowerEdge R640

The Dell PowerEdge R640 is an enterprise 1U rack server powered by 2 Intel Xeon Scalable 1st Gen (Skylake) and 2nd Gen (Cascade Lake) and 24 memory slots supporting up to 3072GB DDR4-2666 / DDR4-2933 RDIMM / LRDIMM. Configured with Up to 10x 2.5-inch SAS/SATA/NVMe or 4x 3.5-inch SAS/SATA drives and Up to 3 PCIe Gen3 slots, the R640 delivers balanced compute and I/O density for enterprise database, hypervisor, and application workloads.

Also written as: PowerEdge R640, Dell R640, R640 1U Server

Specifications

Generations

• Previous generation: Dell PowerEdge R630
• Next generation: Dell PowerEdge R650

About the R640

The Dell PowerEdge R640 is an enterprise 1U rack server engineered for computing and virtualization workloads. Powered by 2 Intel Xeon Scalable 1st Gen (Skylake) and 2nd Gen (Cascade Lake) across 24 memory slots supporting up to 3072GB DDR4-2666 / DDR4-2933 RDIMM / LRDIMM, the R640 balances throughput and memory capacity. In Dell's server catalog, the R640 succeeded the POWEREDGE-R630 and was followed by the POWEREDGE-R650, positioned alongside rival systems including PROLIANT-DL360-GEN10, THINKSYSTEM-SR630.

Options and compatibility

Processor support on the R640 utilizes 2 LGA3647 (Socket P0) sockets with thermal heatsinks matching CPU power envelopes. System memory slots on the R640 require DDR4-2666 / DDR4-2933 RDIMM / LRDIMM modules, and mixing RDIMM with LRDIMM memory is not supported. Front backplanes on the R640 accommodate either DXD9H (2.5-inch SFF) or X7K8W (3.5-inch LFF) trays based on chassis option. Networking on the R640 uses Network Daughter Card (NDC), and expansion cards install into Up to 3 PCIe Gen3 slots risers.

How to identify it

Physical identification of the R640 is verified by the 14th-generation silver-gray brushed aluminum honeycomb bezel with the R640 badge on the front chassis ear. The pull-out information tag on the R640 control panel displays the 7-character Dell Service Tag and default login credentials. In iDRAC9, the server identifies as R640 with active firmware, slot mapping, and power telemetry.

Buying used

When evaluating a pre-owned R640, inspect the LGA3647 (Socket P0) CPU socket pins for damage and ensure retention clips are intact. Run Dell ePSA diagnostics across all 24 memory slots of the R640 to verify zero uncorrectable ECC faults under load. Verify that redundant power supplies in the R640 match in wattage and that iDRAC9 Enterprise remote console is enabled. Ensure required R640 drive caddies and bracket accessories are present.

Reference prices (last 14 days, updated 2026-10-27)

Prices seen on public listings on the dates shown, before tax and shipping. Not an offer.

Compatible parts

Bezels

• 325-BCHH Dell PowerEdge 1U Standard LCD Front Bezel with Key Lock
• 325-BCHK Dell PowerEdge 1U Security Bezel with Key Lock (Non-LCD)

Memory

• 370-AAFD Dell 16GB DDR4-2933 Dual Rank RDIMM 288-pin Memory Module
• 370-AAFW Dell 32GB 2Rx4 DDR4-2933 RDIMM ECC Registered Memory
• 370-AAFX Dell 64GB DDR4-2933 Quad Rank LRDIMM 288-pin Memory Module
• 370-ADNF Dell 16GB DDR4-2666 Dual Rank Registered ECC RDIMM
• 370-ADNG Dell 32GB DDR4-2666 Dual Rank Registered ECC RDIMM
• 370-ADNH Dell 64GB DDR4-2666 Quad Rank LRDIMM Memory Module
• 370-AEVO Dell 16GB DDR4-3200 Single Rank RDIMM 288-pin Memory Module
• 370-AEVQ Dell 32GB DDR4-3200 Dual Rank RDIMM 288-pin Memory Module

Hard drives

• 400-AJPC Dell 600GB 10K RPM SAS 12Gb/s 512n 2.5in Hot-Plug Hard Drive
• 400-AJPD Dell 1.2TB 10K RPM SAS 12Gb/s 2.5-inch Hot-Plug Hard Drive
• 400-ATJN Dell 600GB 15K RPM SAS 12Gb/s 512n 2.5in Hot-Plug Hard Drive
• 400-ATKO Dell 900GB 15K RPM SAS 12Gb/s 512e 2.5in Hot-Plug Hard Drive
• 400-ATKP Dell 1.8TB 10K RPM SAS 12Gb/s 512e 2.5in Hot-Plug Hard Drive
• 400-ATKQ Dell 300GB 15K RPM SAS 12Gb/s 2.5in Hot-Plug Hard Drive
• 400-BLLJ Dell 2.4TB 10K RPM SAS 12Gb/s 512e 2.5-inch Hot-Plug Hard Drive

SSDs

• 400-AZPZ Dell 1.92TB SAS Read Intensive 12Gb/s 2.5-inch Hot-Plug SSD
• 400-BDRI Dell 240GB SATA Read Intensive 6Gb/s 512e 2.5in Hot-Plug SSD
• 400-BDRL Dell 480GB SATA Mixed Use 6Gb/s 512e 2.5in Hot-Plug SSD
• 400-BDRO Dell 960GB SATA Read Intensive 6Gb/s 512e 2.5in Hot-Plug SSD
• 400-BDRP Dell 1.92TB SATA Read Intensive 6Gb/s 512e 2.5in Hot-Plug SSD
• 400-BDRQ Dell 3.84TB SATA Read Intensive 6Gb/s 512e 2.5in Hot-Plug SSD
• 400-BDRR Dell 7.68TB SATA Read Intensive 6Gb/s 512e 2.5in Hot-Plug SSD
• 400-BDSD Dell 3.84TB SAS Read Intensive 12Gb/s 2.5-inch Hot-Plug SSD
• 400-BDSH Dell 480GB SATA Read Intensive 6Gb/s 512e 2.5in Hot-Plug SSD
• 400-BDSI Dell 960GB SAS Mixed Use 12Gb/s 2.5-inch Hot-Plug SSD

Boot devices

• 400-BDBR Dell BOSS-S1 M.2 240GB SATA 6Gb/s Enterprise Solid State Drive
• 400-BDBS Dell BOSS-S1/S2 M.2 480GB SATA 6Gb/s Enterprise Solid State Drive
• BOSS-S1 Dell Boot Optimized Storage Solution (BOSS-S1) PCIe Card with Dual M.2 SSDs

RAID controllers

• 405-AAIS Dell PERC H730P Mini Monolithic 2GB NV Cache RAID Controller
• 405-AAIT Dell PERC H330 Mini Monolithic 12Gb/s SAS RAID Controller
• PERC-H330 Dell PERC H330 12Gb/s SAS Entry RAID / HBA Controller
• PERC-H730P Dell PERC H730P 12Gb/s SAS 2GB NV Cache Mini Mono / PCIe RAID Controller
• PERC-H740P Dell PERC H740P 12Gb/s SAS 8GB NV Cache PCIe / Mini Mono RAID Controller
• PERC-H840 Dell PERC H840 12Gb/s SAS External RAID Controller with 8GB NV Cache

HBAs

• 405-AAJW Dell HBA330 12Gb/s SAS Host Bus Adapter (PCIe Adapter)
• 405-AAKM Dell HBA330 Mini Monolithic 12Gb/s SAS Host Bus Adapter
• 405-AANT Dell 12Gbps SAS HBA Dual Port External PCIe Controller
• 540-BBUU Dell Emulex LPe31002 Dual Port 16Gb Fibre Channel Host Bus Adapter
• 540-BBUV Dell QLogic 2692 Dual Port 16Gb Fibre Channel Host Bus Adapter

Transceivers

• 407-BBOG Dell 16Gb Short Wave SFP+ Fibre Channel Optical Transceiver
• 407-BBOU Dell 10GbE SFP+ SR Optical Transceiver (850nm, 300m MMF)

Power supplies

• 450-AIYP Dell 1100W Titanium Hot-Plug Redundant Power Supply (Common Slot)
• 450-AJPZ Dell 750W Platinum Hot-Plug Redundant Power Supply (Common Slot)
• 450-AJQS Dell 495W Platinum Hot-Plug Redundant Power Supply (Common Slot)
• 450-AJRR Dell 1400W Platinum Hot-Plug Redundant Power Supply (Common Slot)

TPM modules

• 461-AAIG Dell Trusted Platform Module (TPM 2.0) Security Module for 14G/15G

Cables

• 470-AATH Dell Networking Cable SFP+ to SFP+ 10GbE Passive Direct Attach Copper 1m
• 470-AATI Dell Networking Cable SFP+ to SFP+ 10GbE Passive Direct Attach Copper 3m
• 470-AATJ Dell Networking Cable SFP+ to SFP+ 10GbE Passive Direct Attach Copper 5m

Network adapters

• 540-BBGN Dell Broadcom 57412 Dual Port 10GbE SFP+ PCIe Adapter
• 540-BBGO Dell Broadcom 57416 Dual Port 10GBASE-T RJ45 PCIe Adapter
• 540-BBGY Dell Broadcom 57414 Dual Port 10/25GbE SFP28 PCIe Low Profile Network Adapter
• 540-BBHG Dell Intel X520/I350 2x10GbE SFP+ + 2x1GbE BASE-T Network Daughter Card (rNDC)
• 540-BBHH Dell Intel X540/I350 2x10GBASE-T + 2x1GbE BASE-T Network Daughter Card (rNDC)
• 540-BBHO Dell Broadcom 5720 Quad Port 1GbE BASE-T Network Daughter Card (rNDC)
• 540-BBIU Dell Broadcom 57416/5720 2x10GBASE-T + 2x1GbE Network Daughter Card (rNDC)
• 540-BBIV Dell Broadcom 57412/5720 2x10GbE SFP+ + 2x1GbE Network Daughter Card (rNDC)
• 540-BBJL Dell Mellanox ConnectX-4 Lx Dual Port 25GbE SFP28 Network Daughter Card (rNDC)
• 540-BBOZ Dell Intel X550 Dual Port 10GBASE-T RJ45 PCIe Adapter
• 540-BBRL Dell Intel X710 Quad Port 10GbE SFP+ Full-Height PCIe Adapter
• 540-BBYS Dell Broadcom 5720 Quad Port 1GbE BASE-T RJ45 PCIe Adapter
• 540-BCND Dell Mellanox ConnectX-6 Lx Dual Port 25GbE SFP28 PCIe Adapter
• 540-BCOS Dell Mellanox ConnectX-5 Dual Port 25GbE SFP28 PCIe Adapter

OCP adapters

• 540-BBGP Dell Broadcom 57416 Dual Port 10GBASE-T RJ45 OCP 3.0 Adapter
• 540-BBPA Dell Intel X550 Dual Port 10GBASE-T RJ45 OCP 3.0 Adapter
• 540-BBRM Dell Intel X710 Dual Port 10GbE SFP+ OCP 3.0 Adapter
• 540-BBYT Dell Broadcom 5720 Dual Port 1GbE BASE-T RJ45 OCP 3.0 Adapter
• 540-BCOT Dell Mellanox ConnectX-5 Dual Port 25GbE SFP28 OCP 3.0 Adapter

Fans

• 750-AAYK Dell PowerEdge R640 High Performance Fan Module

Rail kits

• 770-BBBQ Dell ReadyRails II Sliding Rails for 1U PowerEdge Servers (A7/A8)
• 770-BCKV Dell 1U Cable Management Arm (CMA) for ReadyRails II
• 770-BCKX Dell ReadyRails Static Rails for 1U/2U PowerEdge Systems

Drive caddies

• DXD9H Dell 2.5-inch Gen14/Gen15/Gen16 Hot-Plug Drive Caddy Tray (SFF)

Works together

How the Dell PowerEdge R640 connects to servers, storage and the network: 4 ways, with the parts and products on each path.

Plan and size it

• Draw this setup in the topology planner mrplanb.com
• Add up rack power and space rack-density.com
• Virtualization storage Ledger: scored storage platforms mrplanb.com
• SAN transport and NVMe over FC for backup mrplanb.com
• Dell E-Lab Navigator (Dell interoperability) dell.com

Equivalent models from other brands

• HPE ProLiant DL360 Gen10 · compare
• Lenovo ThinkSystem SR630 · compare

FAQ

Sources

• Dell PowerEdge R640 Technical Guide, checked 2026-10-27