Brands Guides About
Dell PowerEdge R640 8x2.5
Dell

Dell PowerEdge R640 8x2.5" Server (Renewed)

Eight hot-plug SAS bays and 48GB of ECC RAM in a 1U footprint give this renewed R640 serious density for virtualization and data workloads.

View price on Amazon
Affiliate Disclosure: Studio Supplies may earn a commission from qualifying purchases made through links on this page, at no additional cost to you. This helps support our editorial team.

Notice a mistake? Let Us Know

Overview

Reliable Performance: Dell PowerEdge R640 Server

The Dell PowerEdge R640 is a renewed server offering exceptional performance and scalability in a compact 1U form factor. Equipped with an Intel Xeon Silver processor, ample RAM, and hot-plug drive bays, this server is ideal for a variety of workloads.

Specifications

  • Form Factor: 1U Rack Server
  • Drive Bays: 8 x 2.5" Hot Plug
  • Processor: Silver 4110 Eight Core 2.1Ghz
  • Memory: 48GB RAM
  • Controller: H330

Pros & Cons

👍 Pros

  • The 1U form factor delivers 8 hot-plug 2.5-inch drive bays in minimal rack space — a density advantage for storage-constrained deployments.
  • 48GB of ECC RAM provides error-correcting memory protection that directly reduces the risk of data corruption in long-running workloads.
  • The Xeon Silver 4110's 8-core, 16-thread configuration handles moderate virtualization stacks with headroom for additional VM consolidation.
  • Hot-plug drive bays enable drive replacement or expansion without downtime, a critical operational advantage in production rack environments.
  • The R640's iDRAC9 remote management interface provides out-of-band server access, power control, and hardware health monitoring over the network.

👎 Cons

  • The H330 controller's lack of a battery-backed cache unit limits sustained write IOPS compared to H730/H740P configurations — a measurable bottleneck for database workloads.
  • A single Xeon Silver 4110 leaves 12 DIMM slots unpopulated; adding a second CPU requires a compatible Silver/Gold SKU plus heatsink, which may not be included with the renewed unit.
  • 48GB RAM is modest for heavy hypervisor workloads — expanding to 192GB+ requires purchasing additional RDIMMs, and pricing depends on available JEDEC-compatible modules.
  • The 1U chassis constrains cooling airspace, meaning high-TDP workloads run the fans at elevated RPMs that generate significant acoustic output in open-rack environments.
  • Renewed unit iDRAC Express (base license) may lack the Enterprise features (virtual media, full KVM) needed for headless remote management without purchasing an upgrade license.

Frequently Asked Questions

The R640 ships with an Intel Xeon Silver 4110 — an 8-core, 16-thread processor running at 2.1GHz base with Turbo up to 3.0GHz. That translates to solid parallel throughput for virtualization, container hosting, and database workloads, though it won't compete with Gold or Platinum SKUs on raw core count or memory bandwidth.
The Dell H330 is a basic RAID controller that supports RAID 0, 1, 5, and 10 — but it lacks a battery-backed write cache, which means RAID 5/6 write performance will be noticeably lower than controllers with a PERC H730 or H740P cache module. For write-intensive workloads, RAID 10 is the recommended configuration on this controller.
The 48GB configuration most commonly uses 3×16GB RDIMMs across two CPU memory channels. The R640 supports up to 24 DIMM slots (12 per CPU socket with dual-CPU config) and a maximum of 3TB with LRDIMMs. Single-CPU configs are limited to 12 slots. Verify slot population before adding modules.
The R640 1U chassis supports up to three PCIe expansion slots depending on the riser configuration — typically two x8 and one x16 slot. This limits GPU or high-density NIC expansion compared to 2U platforms, but covers standard use cases like 10GbE cards or HBA additions.
Renewed designation on the R640 typically indicates the unit has been tested for power-on functionality and drive bay operation. However, renewal standards vary by seller — confirm whether the iDRAC license tier, firmware revision, and RAID controller battery status have been certified before deploying in production.

Related Products