Dell PowerEdge R730xd Upgrade Guide

Lifecycle and support

Standard support ended on June 30, 2025 (estimate).

Dates not listed haven't been published by the manufacturer or a reliable third party.

RAM upgrade

The R730xd has 24 full-size 288-pin DDR4 DIMM sockets, 12 per CPU. Only ECC registered memory works: DDR4 RDIMM or LRDIMM. Desktop DDR4, UDIMM and non-ECC modules will not post. There is no soldered memory, so every gigabyte is in a socket.

Module sizes Dell documents are 4 and 8 GB single-rank RDIMMs, 8, 16 and 32 GB dual-rank RDIMMs, and 64 or 128 GB quad-rank LRDIMMs. The updated owner's manual lists 128 GB modules, which would mean 1,536 GB with one CPU and 3,072 GB with two; with 32 GB RDIMMs the practical ceiling is 384 GB single-CPU or 768 GB dual-CPU. Be aware that Dell's documents disagree here: older Dell spec sheets cap memory at 64 GB per module and 1.5 TB total. If you want 128 GB sticks, they need a recent BIOS and modules on Dell's tested list; many third-party 128 GB modules are rejected at POST.

Speeds run from 1333 up to 2400 MT/s, but 2400 MT/s only happens with Xeon E5-2600 v4 processors — v3 processors top out at 2133 MT/s. Mixed speeds run at the slowest module. Two more speed penalties to plan around: three DIMMs per channel and 128 GB LRDIMMs both drop the clock below 2400 MT/s.

How you populate matters as much as what you buy. Fill sockets in the tab-colour order white, then black, then green, putting the largest modules in first. You can use up to three DIMMs per channel, but one per channel is fastest, so eight or twelve good modules will outperform a full set of twenty-four. Don't mix RDIMMs with LRDIMMs, stick to one or two module sizes, and in a dual-CPU system populate symmetrically — A1 with B1, and so on. Sockets behind an empty CPU socket cannot be used.

Buying tip: matched RDIMMs of one size in pairs, sized so you can stay at one or two DIMMs per channel, give you the most speed for the least fuss.

Buying tips

• Buy ECC DDR4 RDIMM or LRDIMM only; desktop or non-ECC memory will not work
• Fewer, larger modules are faster than filling all 24 slots
• Match the memory speed to your CPU: 2400 MT/s needs Xeon E5-2600 v4

Storage upgrade

All storage lives in hot-swap front, mid and rear bays. The bay count depends entirely on the chassis and backplane your server shipped with: 14 bays (twelve 3.5-inch front plus two 2.5-inch rear), 18 bays (the same plus a four-bay 3.5-inch mid tray), 26 bays (twenty-four 2.5-inch front plus two rear), a 26-bay NVMe variant (twenty 2.5-inch front, four Express Flash NVMe bays and two rear), or 28 bays (eighteen 1.8-inch SSD bays, eight 3.5-inch bays and two rear). Some spec listings round this up to 28; your unit has whatever its backplane gives it.

Interfaces supported are 12 Gb/s SAS, 6 Gb/s SATA, Nearline SAS and SAS/SATA SSDs, plus up to four PCIe Express Flash NVMe SSDs in the NVMe configuration. There are no M.2 and no U.2 slots, so don't buy an M.2 drive for this machine. NVMe needs the specific NVMe backplane with the matching cabling and riser — a standard SAS/SATA backplane cannot be turned into NVMe with software or firmware.

There is no documented per-drive capacity ceiling; the limits are the bay count and the drives you fit. Dell's manual does not state an explicit height limit, but 2.5-inch hot-swap bays take standard 7 mm and 15 mm small-form-factor drives — verify against your backplane and caddies before buying. Rear bays hold up to two hot-plug 2.5-inch drives, and in the 3.5-inch chassis the rear slots are SSD-only. Some 18-bay mid-tray setups are not supported in every configuration, so check the manual against your service tag.

Two small extras: a vFlash SD card slot on the rear and an internal USB 3.0 port for boot media. Some Dell documents also mention an optional Internal Dual SD Module — confirm it with your exact service tag, since it is not prominent in the R730xd manual. NVMe booting is possible as a data drive, but UEFI boot from NVMe on 13th-generation hardware depends on BIOS and backplane configuration, so verify before buying NVMe as a boot device.

Buying tip: on used units, caddies and cables are not always included, and the backplane is the key SKU variable. Check the exact backplane and riser part numbers before you buy drives, and remember that R730xd backplanes, cables and risers are not interchangeable with the plain R730.

Buying tips

• Count your bays and check the backplane type before shopping; NVMe needs the NVMe backplane and cabling
• Budget for caddies and cables if the used unit ships without them
• Rear bays in the 3.5-inch chassis are SSD-only

CPU upgrade

There are two replaceable LGA2011-3 (Socket R3) processor sockets on the Intel C610 chipset. They take Intel Xeon E5-2600 v3 and E5-2600 v4 processors, up to 22 cores per socket on v4. One heads-up: you may see this server listed online with the wrong socket name or an unrelated CPU family. Dell's documentation is consistent — LGA2011-3 for Xeon E5-2600 v3 and v4 — so buy against Dell's spec, not a listing title.

Power is where people get caught. Dell does not support processors rated at 160 W or above, and the ceiling is chassis-dependent: a maximum of 120 W in the 3.5-inch chassis and 145 W in the 2.5-inch chassis. A 145 W part is only supported in the 2.5-inch chassis, so a barebones sold with a 3.5-inch backplane and a 145 W chip may throttle or simply be unsupported. The manual's extended-conditions table adds further requirements for the higher-power envelopes, including redundant power supplies and no non-Dell cards drawing over 25 W.

Processors are not soldered, so swapping is possible in both sockets. If the board shipped with v3-era firmware, Xeon E5-2600 v4 processors may need a BIOS update first — worth doing before you swap if the machine still boots with its current chip. Install matching processors in both sockets, and note that some PCIe slots only work when both CPUs are installed.

Buying tip: check whether you have a 2.5-inch or 3.5-inch chassis before buying a CPU. That single detail decides whether a 145 W Xeon is legal in your server or not.

Buying tips

• Match the CPU TDP to the chassis: 120 W for 3.5-inch, 145 W for 2.5-inch, never 160 W+
• Use two identical processors if you want both memory banks and all PCIe slots
• Update the BIOS before fitting a v4 processor on a v3-era board

How to upgrade

Before you start

• Back up anything you care about and note your current BIOS/firmware settings.
• Shut the server down properly, switch off at the power supplies and unplug every power cord.
• Ground yourself to avoid static damage.
• Open the case. Your exact disassembly depends on the chassis, so follow the owner's manual for your model.
• Install the part, following the population rules for memory or the bay and caddy requirements for drives.
• Close the case, reconnect the power and start the server.
• Enter the system setup and confirm that the new part is recognised — total memory and speed for RAM, the new device for storage, and the correct processor model for a CPU.

Steps

1. Installing memory
   Install the modules in the tab-colour order white, then black, then green, largest first, and populate symmetrically around both CPUs in a dual-socket system. Use one to three DIMMs per channel, and never mix RDIMMs with LRDIMMs.
2. Installing a drive
   Fit the drive in a caddy for the correct bay size and slide it into a front, mid or rear bay matching its interface. Hot-swap bays allow drives to be changed with the server running in supported configurations, but for a first build we suggest the power-off route above. Check in the BIOS and your RAID utility that the drive appears.
3. Installing a processor
   Update the BIOS first if you are moving to a Xeon E5-2600 v4 on a v3-era board. Fit matching processors and stay within the TDP limit for your chassis. Confirm the correct processor model shows up in the system setup afterwards.

Good to know

• Dell's documents disagree on maximum memory per module (64 GB in older spec sheets versus 128 GB in the updated owner's manual).
• Dell's owner's manual is inconsistent about the number of PCIe slots; the riser table is the reliable reference.
• Some Dell documents list an optional Internal Dual SD Module for the R730xd; confirm with your exact service tag.

Frequently asked questions

How much RAM can the Dell PowerEdge R730xd take?

With two CPUs and 128 GB LRDIMMs, 3,072 GB across 24 slots (1,536 GB with one CPU). With 32 GB RDIMMs, 768 GB dual-CPU or 384 GB single-CPU. Dell's documents disagree on the 128 GB figure: older Dell spec sheets cap memory at 64 GB per module and 1.5 TB total, and 128 GB 3DS modules need a recent BIOS plus Dell-tested parts.

Can I use desktop or non-ECC DDR4 in the R730xd?

No. The 24 DIMM sockets take ECC registered memory only — DDR4 RDIMM or LRDIMM. UDIMM, desktop and non-ECC modules will not work, and you cannot mix RDIMMs with LRDIMMs.

Does the R730xd support NVMe SSDs, and does it have M.2 slots?

It supports up to four PCIe Express Flash NVMe SSDs, but only in the 26-bay NVMe configuration with the matching backplane, cabling and riser. There are no M.2 or U.2 slots at all. NVMe booting depends on BIOS and backplane configuration, so verify before buying NVMe as a boot drive.

How many drives fit in an R730xd?

It depends on the chassis: 14, 18, 26, a 26-bay NVMe variant, or 28 bays. Rear bays take up to two 2.5-inch drives, SSD-only in the 3.5-inch chassis. There is no documented per-drive capacity cap, so the bay count is the real limit.

What CPUs does the R730xd support?

Two Intel Xeon E5-2600 v3 or v4 processors in LGA2011-3 sockets, up to 22 cores per socket on v4. The power limit is chassis-dependent: 120 W maximum in the 3.5-inch chassis, 145 W in the 2.5-inch chassis, and 160 W or higher is never supported.

Do I need a BIOS update before installing a Xeon E5-2600 v4?

Possibly. If the board shipped with v3-era firmware, v4 processors may need a BIOS update first. Update the firmware while the machine still boots with its current processor, then swap the CPU.

Official documents and references

• PDF Dell PowerEdge R730xd Owner's Manual (PDF)
  Disassembly, memory rules, drive bays and processor limits.
• Dell PowerEdge R730xd Owner's Manual: Technical specifications
  Overall platform specifications.
• Dell PowerEdge R730xd Owner's Manual: Memory specifications
  Supported module types and sizes.
• Dell PowerEdge R730xd Owner's Manual: General memory module installation guidelines
  Population order and channel rules.
• Dell PowerEdge R730xd Owner's Manual: Sample memory configurations
  Worked examples of valid layouts.
• Dell PowerEdge R730xd Owner's Manual: Drive specifications
  Bay configurations and supported drive types.
• Dell PowerEdge R730xd Owner's Manual: Processor settings details
  Processor configuration and settings.