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

DELL

DELL PowerEdge R640 1U rack server 2x Xeon Gold 6148 20-core 768GB DDR4 2x 800GB SSD H730P

SKU CH-D47A-8M9MR

Dual 20-core Xeon Gold 6148 CPUs, 768GB DDR4 ECC memory, H730P RAID controller, two 800GB SATA SSDs, quad-port 1GbE/10GbE networking, iDRAC9 Enterprise.

  • ProcessorIntel Xeon
  • Installed RAM768 GB
  • Video RAM8 MB
  • Installed SSD2 × 800 GB SATA SSD
  • ChipsetIntel C620
  • Processor core count20-Core Processor
  • Dual Xeon Gold 6148 CPUs deliver 40 total cores for heavy workloads
  • 768GB DDR4 ECC memory supports large datasets and virtualisation
  • PERC H730P controller enables RAID 0/1/5/6/10/50/60 with battery-backed cache
  • Two 800GB SATA SSDs provide fast boot and application storage
  • Quad-port 1GbE plus dual 10Gb SFP+ networking handles high-throughput traffic

Dense 1U dual-socket server

The PowerEdge R640 fits two Xeon Gold 6148 processors into a single rack unit, delivering 40 cores at 2.4 GHz with a 3.7 GHz turbo frequency. It targets organisations that need high compute density for virtualisation, database or high-performance workloads in space-constrained racks. Buyers who require GPU acceleration or more than two sockets should look elsewhere.

H730P controller and quad-port networking

The PERC H730P with 2 GB cache enables RAID 0, 1, 5, 6, 10, 50 and 60 plus pass-through mode for the two installed 800 GB SATA SSDs. An Intel X520/I350 daughter card adds two 1 GbE and two 10 Gb SFP+ ports without consuming a PCIe slot. iDRAC 9 Enterprise provides dedicated remote management.

Verify rack depth and power infrastructure

Confirm the cabinet can accommodate the chassis depth and that dual 750 W platinum supplies match available PDU outlets and circuit capacity. Ensure SFP+ transceivers and fibre patch cables are on hand for 10 Gb links. Memory uses DDR4 registered ECC DIMMs; other generations will not fit.

How it compares

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

Price $3,652.99
Pricier than about 71% of the 17,641 comparable items (median $1,910.99).
Installed RAM 768 GB
Higher than about 90% 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 RAM768 GB
Type of memoryDDR4
Maximum RAM capacity3 TB
Memory slot count24
Storage
Installed SSD2 × 800 GB SATA SSD
Disk controllerDell Perc H730P 2 GB Controller
Drive interfaceSATA
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

When will the PERC H730P RAID controller battery need replacing?

The PERC H730P includes a 2 GB cache battery that typically lasts three to five years; plan replacement when iDRAC 9 Enterprise reports a degraded state.

What thermal limit appears first when both Xeon Gold 6148 CPUs run at 3.7 GHz turbo continuously?

The 750 W platinum power supplies and 1U airflow design set the ceiling; sustained turbo on all 40 cores will hit the platform power budget before CPU junction temperature becomes the bottleneck.

How loud are the fans when the server idles at 768 GB DDR4 2666 MHz memory capacity?

Idle fan speed is governed by iDRAC 9 Enterprise thermal policies; with redundant 750 W PSUs and fully populated DIMM slots the acoustics stay in the typical 1U rack range for this platform.

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