We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Silver rack-mount server chassis with four 3.5 inch drive bays visible

DELL

DELL PowerEdge R640 4LFF Xeon Gold 6138 256GB DDR4

SKU CH-NJW8-KHK7S

A 1U rack server with four 3.5-inch drive bays, one 20-core Xeon Gold 6138 processor at 2.0 GHz and 256 GB DDR4 ECC memory

  • ProcessorIntel Xeon
  • Installed RAM256 GB
  • Type of memoryDDR4
  • Processor speed2 GHz
  • Installed CPUs1
  • Max supported CPUs2
  • 20-core Xeon Gold 6138 at 2.0 GHz powers demanding workloads
  • 256 GB DDR4 ECC registered memory scales to 7.68 TB
  • PERC H740P RAID controller manages four 3.5" SATA drive bays
  • iDRAC9 Enterprise licence enables full remote server management
  • Dual 750 W power supplies and 10 GbE 562T adapter ensure resilient connectivity

Dell PowerEdge R640 4LFF Server

This 1U rack server ships with one Intel Xeon Gold 6138 processor at 2.0 GHz and 20 cores. It includes 256 GB DDR4 ECC registered memory across 16 DIMMs. The chassis provides four 3.5-inch drive bays and a PERC H740P RAID controller.

Suits virtualisation hosts needing dense CPU

The single-socket configuration with 256 GB RAM supports heavy workloads in a compact rack unit. Buyers who need dual-socket performance or more than four drive bays should look at a larger chassis. No drives are installed so storage must be sourced separately.

Four 3.5-inch SATA bays with PERC H740P

The backplane accepts up to four SATA hard drives managed by the hardware RAID controller. This drive-count limit decides whether the platform fits the planned storage layout.

How it compares

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

Price $1,834.99
Typical for this category: the median of 17,641 items is $1,910.99.
Installed RAM 256 GB
Higher than about 60% of the 15,103 comparable items (median 128 GB).
Processor speed 2 GHz
Lower than about 92% of the 9,950 comparable items (median 2.3 GHz).

New to this? Buying server hardware with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameDELL
Product linePowerEdge
Model nameRack Mount
Product typeRack
Processor
ProcessorIntel Xeon
Processor speed2 GHz
Installed CPUs1
Max supported CPUs2
Memory
Installed RAM256 GB
Type of memoryDDR4
Maximum RAM capacity7.68 TB
Storage
Installed storage4,00
Disk controllerDell PERC H740P Controller
Drive interfaceSATA
Graphics
Graphics chipIntegrated Graphics
Size & build
Product dimensions36 × 24 × 10 in
More details
Management controlleriDRAC9 - Enterprise License

Questions about this item

What interface does the PERC H740P controller use for the 3.5" drive bays, and what speed does it cap at?

The controller connects the four 3.5-inch bays through SATA, so each drive runs at SATA speeds.

What rack dimensions and rail clearance does the R640 4LFF chassis need to mount?

The unit measures 36 by 24 by 10 inches and weighs 40 pounds; a standard 1U rail kit fits the 36-inch depth.

How is the Xeon Gold 6138 installed, and which step do builders often miss?

Seat the 20-core 2.0 GHz processor in socket 1, apply thermal paste, attach the heatsink, then populate all 16 DIMM slots with the 16 GB DDR4 modules for 256 GB total.

More in Rack & Tower Servers

Similar items