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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.

  • TypeRack
  • Rack Height1U
  • Redundant Hot-swap PowerYes
  • CPU TypeIntel Xeon
  • CPU Speed2.40 GHz
  • CPU SocketLGA 3647
  • 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.

Highlights

  • 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

Specifications

BrandDELL
SeriesPowerEdge R640
ModelR640
TypeRack
Rack Height1U
Redundant Hot-swap PowerYes
CPU TypeIntel Xeon
CPU Speed2.40 GHz
CPU SocketLGA 3647
Number of CPU Cores20-Core Processor
# of Processors Installed2
MAX Processors2
ChipsetIntel C620
Installed Memory Size768GB
Memory TypeDDR4
Max Memory Capacity3TB
Number of Memory Slots24
Storage ControllerDell Perc H730P 2GB Controller
HDD InterfaceSATA
SSD (Installed)2 x 800GB SATA SSD
Raid LevelRAID 0/1/5/6/10/50/60
GPU TypeMatrox G200
Video Memory8MB
Ethernet ControllerDell Intel X520/I350 Quad Port 2x 1GbE 2x 10Gb SFP+ Network Daughter Card
LAN Ports4 x Ports
Expansion SlotsUp to 3 PCIe Gen 3 slots all x16
Management PortRJ 45
Operating SystemNo
Features8 x 2.5" SATA/SAS Hot-Plug Drive Bays

Other versions of this model

5 more in the same range

Same family, different memory, cooler or clock — compare before you commit.

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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