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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 512GB DDR4 8x 1.2TB SAS H730P

SKU CH-GSRV-A7D1M

Dual-socket 1U rack server with two 20-core Xeon Gold 6148 processors at 2.4GHz, 512GB DDR4 ECC memory, eight 1.2TB SAS drives on a PERC H730P controller, quad-port 1GbE/10Gb SFP+ networking.

  • TypeRack
  • Rack Height1U
  • Redundant Hot-swap PowerYes
  • CPU TypeIntel Xeon
  • CPU Speed2.40 GHz
  • CPU SocketLGA 3647
  • Dual Xeon Gold 6148 CPUs deliver 40 cores at 2.4GHz base
  • 512GB DDR4 2666MHz ECC memory across 16 DIMM slots
  • PERC H730P controller supports RAID 0/1/5/6/10/50/60 with 2GB cache
  • Eight 1.2TB 10K SAS drives provide high-speed 2.5" storage
  • iDRAC9 Enterprise plus quad-port 1GbE/10GbE networking for remote management

Dual-socket 1U rack server

The Dell PowerEdge R640 is a 1U rack server built for dense scale-out data centre computing. It ships with two Intel Xeon Gold 6148 processors, each running at 2.4 GHz with 20 cores and a 3.7 GHz turbo frequency. The system includes 512 GB of DDR4 2666 MHz registered ECC memory across 16 modules. This configuration targets workloads that demand high core counts and large memory capacity in a compact form factor.

Storage controller and networking bundle

The integrated Dell PERC H730P 2 GB controller provides 12 Gb/s SAS and SATA connectivity with battery-backed cache. It supports RAID levels 0, 1, 5, 6, 10, 50 and 60 as well as pass-through mode. Eight 1.2 TB 10K SAS 2.5-inch drives are pre-installed. A quad-port Intel X520/I350 daughter card adds two 1 GbE and two 10 Gb SFP+ network interfaces. iDRAC 9 Enterprise enables full remote management.

SAS interface and 1U density limits

The SAS 12 Gb/s interface governs the maximum throughput between the controller and the installed drives. The 1U chassis restricts the server to eight 2.5-inch drive bays, limiting raw storage expansion without external enclosures. Only two processor sockets are available, so CPU upgrades cannot exceed the current dual-socket configuration. Memory capacity can grow to 3 TB using the remaining DIMM slots. Buyers who need more internal drive bays or additional CPU sockets will require a larger chassis.

Highlights

  • Dual Xeon Gold 6148 CPUs deliver 40 cores at 2.4GHz base
  • 512GB DDR4 2666MHz ECC memory across 16 DIMM slots
  • PERC H730P controller supports RAID 0/1/5/6/10/50/60 with 2GB cache
  • Eight 1.2TB 10K SAS drives provide high-speed 2.5" storage
  • iDRAC9 Enterprise plus quad-port 1GbE/10GbE networking for remote management

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 Size512GB
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

How often will the PERC H730P controller battery need replacement?

The PERC H730P includes a 2GB cache battery that typically lasts several years; Dell recommends checking battery health via iDRAC 9 Enterprise during routine maintenance.

Which component reaches its thermal limit first during continuous full-load operation?

The dual Xeon Gold 6148 processors at 2.4GHz base and 3.7GHz turbo will hit their thermal envelope before the 750W platinum power supplies or memory subsystem.

What is the typical power draw and noise level when the server runs 24/7 with all eight 1.2TB SAS drives active?

Dual 750W platinum supplies provide redundancy; actual draw depends on workload but the platform is designed for efficient 1U density with iDRAC 9 monitoring thermal and fan status.

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