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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 2× Xeon Gold 6148 2.4 GHz 20-core 64GB DDR4 2× 300GB SAS H730P

SKU CH-93SC-J2HEW

Dual 20-core Xeon 1U server with 64GB DDR4, PERC H730P RAID, dual 300GB SAS drives and quad-port 1GbE/10Gb SFP+ networking

  • ProcessorIntel Xeon
  • Installed RAM64 GB
  • Video RAM8 MB
  • Installed SSDNo
  • ChipsetIntel C620
  • Processor core count20-Core Processor
  • Dual 20-core Xeon Gold 6148 CPUs deliver 40 total cores for dense compute
  • 64GB DDR4 2666MHz registered ECC memory supports up to 3TB capacity across 24 slots
  • PERC H730P 2GB controller enables RAID 0/1/5/6/10/50/60 with battery-backed cache
  • Dual 300GB 10K SAS drives plus quad-port 1GbE/10GbE SFP+ networking for fast I/O
  • iDRAC9 Enterprise remote management with redundant 750W platinum PSUs in 1U chassis

Dense 1U dual-socket compute platform

The Dell PowerEdge R640 is a 1U rack server built for scale-out data-center workloads. Two Intel Xeon Gold 6148 processors provide 40 total cores at 2.4 GHz with 3.7 GHz turbo. The system ships with 64 GB of DDR4-2666 registered ECC memory across four modules.

Suits dense virtualization and database clusters

This configuration targets environments that need high core density and fast storage I/O in a single rack unit. The PERC H730P controller with 2 GB cache supports RAID 0/1/5/6/10/50/60 for the two included 300 GB 10K SAS drives. Buyers who need more internal drive bays or larger installed capacity should look at a different chassis.

Dual Xeon Gold 6148 20-core CPUs define throughput

The pair of 20-core processors delivers 40 threads at 2.4 GHz base frequency, setting the performance ceiling for compute-heavy tasks. Memory can expand to 3 TB across 24 DDR4 slots when workloads grow. The quad-port X520/I350 network daughter card adds two 1 GbE and two 10 Gb SFP+ links.

How it compares

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

Price $786.99
Cheaper than about 82% of the 17,641 comparable items (median $1,910.99).
Installed RAM 64 GB
Lower than about 70% of the 15,103 comparable items (median 128 GB).
Video RAM 8 MB
Typical for this category: the median of 8,309 items is 0.01 GB.

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Specifications

Product
Brand nameDELL
Product linePowerEdge R640
Model nameR640
Product typeRack
Processor
ProcessorIntel Xeon
Processor core count20-Core Processor
Processor socketLGA 3647
ChipsetIntel C620
Processor speed2.4 GHz
Installed CPUs2
Max supported CPUs2
Memory
Installed RAM64 GB
Type of memoryDDR4
Maximum RAM capacity3 TB
Memory slot count24
Storage
Installed SSDNo
Disk controllerDell Perc H730P 2 GB Controller
Drive interfaceSAS
Supported RAID levelsRAID 0/1/5/6/10/50/60
Graphics
Video RAM8 MB
Graphics chipMatrox G200
Connectivity
Network controllerDell Intel X520/I350 Quad Port 2x 1GbE 2x 10Gb SFP+ Network Daughter Card
Ports & slots
Network ports4 x Ports
Expansion card slotsUp to 3 PCIe Gen 3 slots all x16
Management interfaceRJ 45
Power
Hot-swap redundant PSUYes
Size & build
Rack height1U
Software
Operating systemNo

Other versions of this model

5 more in the same range

Questions about this item

Should I pick the 2.5-inch 300 GB 10 K SAS drives or add larger SAS or SATA drives later?

The server ships with two 300 GB 10 K SAS drives; the eight 2.5-inch bays and the H730P controller accept any mix of SAS or SATA drives up to the bay count.

What does the 3.7 GHz turbo speed mean when both 20-core Xeon Gold 6148 processors are under load?

Each 20-core CPU has a 2.4 GHz base clock and can reach 3.7 GHz turbo on active cores, giving up to 40 threads at elevated frequency when thermals allow.

How does the 12 Gb/s SAS H730P controller limit real-world drive throughput?

The PERC H730P runs at 12 Gb/s per SAS lane and supports RAID 0, 1, 5, 6, 10, 50 and 60, so sequential throughput is capped by the drive media and the 12 Gb/s link.

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