The Dell PowerEdge XR4520c is a 2U half-width server sled designed for the XR4000 modular chassis. It is the GPU-capable option in the family, providing maximum acceleration and expanded storage for complex workloads at the far edge.

Full Technical Specifications

Component	Specification
Form Factor	2U Half-Width Sled (plugs into the modular XR4000r/z chassis)
Chassis Capacity	XR4000r (2U rackable) holds up to 2x XR4520c sleds; XR4000z (1U stackable) holds 1x XR4520c sled.
Processor	1x 3rd Generation Intel Xeon D Scalable Processor
Max Cores	Up to 20 cores per sled/CPU
Memory	4x DDR4 DIMM slots; Max: 256 GB RDIMM or 512 GB LRDIMM
Memory Speed	Up to 2933 MT/s
Storage (On-Sled)	Up to 8x M.2 NVMe SSDs on PCIe Add-in card, plus 4x M.2 NVMe SSDs on M.2 riser module (Max 12x M.2 drives total on a fully configured sled).
Internal Boot	BOSS-N1 with 2x M.2 SSDs (480GB or 960GB)
PCIe Slots	2x PCIe Gen4 x16 slots (Full-Height, Full-Length)
GPU/Accelerator	Up to 2x 150W Single-Width GPUs OR 1x 250W Double-Width GPU
Networking	Connectivity handled via the chassis; Options include 4x 25GbE SFP (Max 100 Gb) or 4x 10GbE SFP.
I/O Access	Front I/O for streamlined field serviceability.
Ruggedization	MIL 810H and NEBS Level 3 rated; operable in -5°C to 55°C.
Management	iDRAC9, OpenManage Enterprise, Redfish API.

Description

The Dell PowerEdge XR4520c is the high-capacity, GPU-enabled compute sled designed for the modular XR4000 series chassis (XR4000r or XR4000z). Measuring 2U in height and half-width, this sled provides significantly greater expansion capabilities than the 1U XR4510c, allowing it to tackle more intensive far-edge workloads.

Each XR4520c sled features a single 3rd Generation Intel Xeon D Scalable processor and includes two full-height, full-length PCIe Gen4 slots. This critical feature enables acceleration, supporting up to two 150W single-width GPUs or one 250W double-width GPU. The sled also offers exceptional storage density, supporting up to 12 M.2 NVMe SSDs for high-speed local data persistence.

As part of the rugged XR family, the XR4520c is certified to operate in harsh conditions (MIL-810H and NEBS Level 3) with a wide temperature range of -5°C to 55°C. Its modular, front-access design is TCO-optimized, allowing for the simple pull-and-replace of components, which is vital for quick servicing in remote edge locations. This sled is ideal for applications requiring local processing power, such as machine vision, heavy video analytics, and virtual desktop integration (VDI).