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

DELL

DELL PowerEdge R640 1U rack server 2x Xeon Gold 6148 20-core 2.4GHz 64GB DDR4 8x 2.4TB SAS H730P

SKU CH-17P7-B4VVN

1U rack server with dual 20-core Xeon Gold 6148 CPUs, 64GB DDR4, eight 2.4TB SAS drives and PERC H730P RAID

  • TypeRack
  • Rack Height1U
  • Redundant Hot-swap PowerYes
  • CPU TypeIntel Xeon
  • CPU Speed2.40 GHz
  • CPU SocketLGA 3647
  • Dual 20-core Xeon Gold 6148 CPUs deliver 40 threads at 2.4GHz base clock
  • 64GB DDR4 2666MHz ECC memory across four slots supports 3TB maximum capacity
  • PERC H730P 2GB controller enables RAID 0/1/5/6/10/50/60 with battery backup
  • Eight 2.4TB 10K SAS drives provide high-capacity 12Gb/s enterprise storage
  • Quad-port X520/I350 network card adds 2x 1GbE and 2x 10Gb SFP+ connectivity

Dual-socket 1U server for dense compute

The PowerEdge R640 packs two Xeon Gold 6148 processors into a 1U rack chassis, delivering 40 cores at 2.4 GHz with 3.7 GHz turbo. It targets scale-out workloads such as virtualization clusters, HPC nodes and database tiers where rack density and core count matter more than GPU acceleration.

Upgrades from single-socket or older 2U platforms

Moving from a single-socket 620-chipset box or a previous-generation 2U server adds 20 cores per socket and doubles memory channels without expanding rack footprint. The jump is worth it when licensing is core-based and the workload scales across 40 threads, but it does not help workloads that need GPU density or more than 24 DIMM slots.

Sustained load behaviour

Dual hot-swap power supplies and the C620 chipset keep all 40 cores fed during long render, simulation or database jobs. The H730P controller with 2 GB cache maintains RAID 0/1/5/6/10/50/60 throughput across eight 2.4 TB 10 K SAS drives, while the X520/I350 card provides 2x 10 Gb SFP+ and 2x 1 GbE links for steady east-west traffic. iDRAC9 Enterprise gives remote telemetry without host OS dependence.

Highlights

  • Dual 20-core Xeon Gold 6148 CPUs deliver 40 threads at 2.4GHz base clock
  • 64GB DDR4 2666MHz ECC memory across four slots supports 3TB maximum capacity
  • PERC H730P 2GB controller enables RAID 0/1/5/6/10/50/60 with battery backup
  • Eight 2.4TB 10K SAS drives provide high-capacity 12Gb/s enterprise storage
  • Quad-port X520/I350 network card adds 2x 1GbE and 2x 10Gb SFP+ connectivity

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 Size64GB
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

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Questions about this item

What rack height and rail kit does the 1U PowerEdge R640 require for mounting?

The server occupies 1U of rack space and ships with Ready Rails for installation in a standard rack enclosure.

What is the correct order for installing the two Xeon Gold 6148 processors and the 64GB DDR4 memory kit?

Install both processors into the LGA 3647 sockets first, then populate the 24 DDR4 slots starting with the four 16GB modules supplied.

Which component of the PERC H730P controller will need replacement after several years of operation?

The RAID controller includes a battery-backed cache; the battery is the part that typically requires replacement over time.

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