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Silver 1U rack server front with eight 2.5-inch drive bays and bezel

DELL

DELL PowerEdge R640 1U 2× Xeon Gold 6148 2.4GHz 20C 256GB DDR4 8×1.2TB SAS H730P

SKU CH-29CB-T9MM1

Dual 20-core Xeon Gold 6148 at 2.4 GHz with 256 GB DDR4, eight 1.2 TB SAS drives on an H730P controller and iDRAC 9 Enterprise management

  • ProcessorIntel Xeon
  • Installed RAM256 GB
  • Video RAM8 MB
  • Installed SSDNo
  • ChipsetIntel C620
  • Processor core count20-Core Processor
  • Dual Xeon Gold 6148 CPUs deliver 40 cores total at 2.4 GHz base with 3.7 GHz turbo
  • 256 GB DDR4 2666 MHz registered ECC memory across 8 DIMM slots for large datasets
  • PERC H730P 2 GB controller supports RAID 0, 1, 5, 6, 10, 50, 60 with battery-backed cache
  • Eight 1.2 TB 10K SAS drives provide high-throughput local storage in 2.5-inch bays
  • iDRAC9 Enterprise plus quad-port X520/I350 card gives 2× 1 GbE and 2× 10 Gb SFP+ connectivity

Dual-socket 1U server for dense compute

The Dell PowerEdge R640 is a 1U rack server fitted with two Intel Xeon Gold 6148 processors running at 2.4 GHz with 20 cores each. It ships with 256 GB of DDR4 2666 MHz registered ECC memory across 24 slots and eight 1.2 TB 10K SAS drives on a PERC H730P controller. This configuration targets scale-out workloads that need high core density in a single rack unit.

Verify rack space power and network needs

Confirm the rack can accept a 1U chassis with ready rails and that the PDU can supply two 750 W platinum power supplies. The system uses an Intel C620 chipset with LGA 3647 sockets and maxes at two processors. Network connectivity relies on a quad-port daughter card providing two 1 GbE and two 10 Gb SFP+ links, so check switch port availability and cabling before deployment.

Sustained load with redundant cooling and power

Dual redundant 750 W power supplies and hot-swap fans maintain operation during continuous multi-threaded workloads. The PERC H730P controller with 2 GB cache supports RAID 0, 1, 5, 6, 10, 50, 60 and pass-through for consistent storage throughput. iDRAC 9 Enterprise enables remote monitoring and firmware updates without physical access during extended production runs.

How it compares

Measured against everything we stock in Rack & Tower Servers, at today’s prices. Recalculated every night.

Price $1,748.99
Typical for this category: the median of 17,641 items is $1,910.99.
Installed RAM 256 GB
Higher than about 60% of the 15,103 comparable items (median 128 GB).
Video RAM 8 MB
Typical for this category: the median of 8,309 items is 0.01 GB.

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Specifications

Product
Brand nameDELL
Product linePowerEdge R640
Model nameR640
Product typeRack
Processor
ProcessorIntel Xeon
Processor core count20-Core Processor
Processor socketLGA 3647
ChipsetIntel C620
Processor speed2.4 GHz
Installed CPUs2
Max supported CPUs2
Memory
Installed RAM256 GB
Type of memoryDDR4
Maximum RAM capacity3 TB
Memory slot count24
Storage
Installed SSDNo
Disk controllerDell Perc H730P 2 GB Controller
Drive interfaceSAS
Supported RAID levelsRAID 0/1/5/6/10/50/60
Graphics
Video RAM8 MB
Graphics chipMatrox G200
Connectivity
Network controllerDell Intel X520/I350 Quad Port 2x 1GbE 2x 10Gb SFP+ Network Daughter Card
Ports & slots
Network ports4 x Ports
Expansion card slotsUp to 3 PCIe Gen 3 slots all x16
Management interfaceRJ 45
Power
Hot-swap redundant PSUYes
Size & build
Rack height1U
Software
Operating systemNo

Other versions of this model

5 more in the same range

Questions about this item

What comes in the box and what must be purchased separately?

The server ships with dual Xeon Gold 6148 CPUs, 256 GB DDR4 in eight 32 GB modules, eight 1.2 TB 10K SAS drives, a PERC H730P controller, quad-port X520/I350 networking, iDRAC9 Enterprise, twin 750 W PSUs, rails and bezel. No extra parts are required for basic operation.

Which configuration should I choose between the listed processor and memory options?

This unit is a single fixed configuration: two 20-core Xeon Gold 6148 processors at 2.4 GHz with 3.7 GHz turbo, plus 256 GB of DDR4-2666 registered ECC memory. No alternative CPU or RAM versions are offered.

What does the 2.4 GHz base clock mean for real workloads?

Each of the 40 total cores runs at 2.4 GHz base and can boost to 3.7 GHz under load, delivering high multi-thread throughput for virtualization, databases and dense compute tasks in a 1U form factor.

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