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

DELL

DELL PowerEdge R640 1U Rack Server 2x Xeon Gold 6148 2.4GHz 20 Core 256GB DDR4 8x 600GB SAS H730P

SKU CH-4W81-A1AEJ

Dual 20-core Xeon Gold 6148 2.4GHz server with 256GB DDR4, PERC H730P RAID and eight 600GB SAS drives in a 1U rack chassis

  • TypeRack
  • Rack Height1U
  • Redundant Hot-swap PowerYes
  • CPU TypeIntel Xeon
  • CPU Speed2.40 GHz
  • CPU SocketLGA 3647
  • Dual Xeon Gold 6148 processors deliver 40 total cores for heavy workloads
  • 256GB DDR4 2666MHz ECC memory supports large datasets and virtualization
  • PERC H730P controller enables RAID 0/1/5/6/10/50/60 with 2GB cache
  • Eight 600GB 10K SAS drives provide fast redundant storage in 2.5" bays
  • Dual 750W platinum PSUs and iDRAC9 Enterprise ensure uptime and remote control

Dense 1U dual-socket server

The PowerEdge R640 fits two Xeon Gold 6148 processors and 256GB of DDR4 ECC memory into a single rack unit. It targets operators who need maximum compute density for virtualisation, database or high-performance workloads without expanding rack footprint.

Replaces older 2U or single-socket platforms

Moving from a larger chassis or a single-CPU server to this 1U dual-socket design doubles core count to 40 while halving rack space. The jump is worth it when licence costs scale per socket and density drives total cost of ownership.

Sustained load behaviour

Redundant 750W platinum power supplies and hot-swap cooling keep both CPUs at 2.4GHz base clock under continuous multi-threaded demand. The H730P controller with 2GB cache maintains consistent RAID throughput across the eight 600GB 10K SAS drives during extended write-heavy runs.

Highlights

  • Dual Xeon Gold 6148 processors deliver 40 total cores for heavy workloads
  • 256GB DDR4 2666MHz ECC memory supports large datasets and virtualization
  • PERC H730P controller enables RAID 0/1/5/6/10/50/60 with 2GB cache
  • Eight 600GB 10K SAS drives provide fast redundant storage in 2.5" bays
  • Dual 750W platinum PSUs and iDRAC9 Enterprise ensure uptime and remote control

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 Size256GB
Memory TypeDDR4
Max Memory Capacity3TB
Number of Memory Slots24
Storage ControllerDell Perc H730P 2GB Controller
HDD InterfaceSAS
SSD (Installed)No
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

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Questions about this item

What rack-mount hardware is included for this 1U server?

The system ships with Dell Ready Rails and a front bezel for installation in a standard four-post rack cabinet.

How are the two Xeon Gold 6148 processors installed, and what is the common mistake?

Both CPUs come pre-installed in the dual LGA 3647 sockets; the error buyers make is ordering extra processors when the board already supports the maximum of two.

What maintenance will the PERC H730P controller need over time?

The RAID controller includes a 2GB cache module backed by a battery that will eventually require replacement to preserve write-cache protection during power loss.

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