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Silver 1U rack server with front bezel, eight 2.5-inch drive bays and redundant power supplies

DELL

DELL PowerEdge R640 1U rack server 2x Xeon Gold 6148 2.4GHz 20-core 512GB DDR4 8x 2.4TB SAS H730P

SKU CH-FBNX-0EGZF

Dual 20-core Xeon Gold 6148 CPUs, 512 GB DDR4 ECC, eight 2.4 TB SAS drives and H730P RAID in a 1U rack chassis

  • ProcessorIntel Xeon
  • Installed RAM512 GB
  • Video RAM8 MB
  • Installed SSDNo
  • ChipsetIntel C620
  • Processor core count20-Core Processor
  • Dual Xeon Gold 6148 CPUs deliver 40 cores for heavy workloads
  • 512GB DDR4 2666MHz ECC memory supports large datasets
  • PERC H730P controller enables RAID 0/1/5/6/10/50/60 flexibility
  • Eight 2.4TB 10K SAS drives provide high-capacity storage
  • iDRAC9 Enterprise plus quad-port 1GbE/10GbE networking simplifies remote management

Dual-socket 1U compute node

The PowerEdge R640 packs two Intel Xeon Gold 6148 processors, each running at 2.40 GHz with 20 cores, into a single rack unit. Sixteen 32 GB DDR4 modules deliver 512 GB of registered ECC memory at 2666 MHz. Eight 2.4 TB 10K SAS drives connect through a PERC H730P controller with 2 GB cache, supporting RAID 0, 1, 5, 6, 10, 50 and 60. Dual 750 W platinum power supplies and iDRAC 9 Enterprise complete the package.

Suited for dense virtualisation

This server targets workloads that demand high core counts and large memory capacity in minimal rack space. The quad-port network daughter card provides two 1 GbE and two 10 Gb SFP+ links for flexible fabric integration. Organisations requiring GPU acceleration or more than two sockets should evaluate alternative platforms. Buyers who need all-flash configurations or different drive bay counts will need another chassis.

512 GB DDR4 registered ECC memory

The installed 512 GB across 24 DIMM slots is the decisive figure for memory-bound applications such as in-memory databases or heavy virtualisation. Maximum supported capacity reaches 3 TB, so future expansion is possible within the same chassis. If the working set exceeds the current 512 GB, plan for additional modules before deployment.

How it compares

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

Price $4,353.99
Pricier than about 74% of the 17,641 comparable items (median $1,910.99).
Installed RAM 512 GB
Higher than about 80% 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 RAM512 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

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Questions about this item

What does the 2.4 GHz base clock with 3.7 GHz turbo mean for sustained workloads on this server?

Each of the two Xeon Gold 6148 processors runs at 2.4 GHz base and can boost to 3.7 GHz, giving 40 cores total for compute-intensive tasks.

What RAID levels does the PERC H730P 2GB 12Gb/s controller support with the eight 2.4 TB SAS drives?

The H730P supports RAID 0, 1, 5, 6, 10, 50 and 60 plus pass-through, so the eight 2.4 TB 10K SAS drives can be arranged in any of those configurations.

How much DDR4 memory can be added beyond the 512 GB already installed?

The system has 24 DDR4 slots and 16 are populated with 32 GB modules, leaving 8 slots free to reach the 3 TB maximum.

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