DELL | POWEREDGE | T-Series | R-Series | C-Series | XE-Series | MX-Series | FX-Series | XR-Series | HS-Series | SERVER MEMORY UPGRADES

NEMIX RAM Specializes in Dell PowerEdge | T-Series | R-Series | C-Series | XE-Series | MX-Series | FX-Series | XR-Series | HS-Series Server Memory Configurations.

Dell introduced the first PowerEdge server in 1996. Since then Dell has released many generations of PowerEdge systems, grouped by shared design components — the current line is the 16th generation. The model name itself encodes the generation, the form factor or CPU socket count, and the class. Today's range runs from small-business towers to enterprise rack and modular systems supporting multiple terabytes of memory.

RDIMM or LRDIMM — which does your PowerEdge need?

Most PowerEdge servers take ECC Registered memory (RDIMM). Higher-capacity configurations on multi-socket platforms frequently require Load-Reduced memory (LRDIMM) to reach the machine's maximum supported capacity. The two are not interchangeable, and the correct choice depends on your exact model, populated slots, and installed CPUs. If you are not certain which your server takes, send us the model and current configuration and we will confirm fitment before you order.

NEMIX RAM trusted by thousands of organizations since 1993

NEMIX RAM is a USA Small Business since 1993.Every Dell PowerEdge upgrade we supply is researched, matched, and compatibility-tested against the target platform, and all Modules are backed by a Lifetime Replacement Warranty. Modules are JEDEC-compliant and tested under load before they ship.

We work with IT teams, resellers, and government and education buyers — volume pricing, purchase-order terms, formal quotes, and direct technical support. Critical upgrades are prioritized and advance replacement is available. Whether you are upgrading a tower, rack, modular, rugged, or specialty PowerEdge system, we can specify the correct memory for it.

How to read a PowerEdge model number

The model number tells you the memory generation before you open a manual. Take the R7625: R is the form factor, 7 the performance class, 6 the generation (16G), 2 the socket count, and the last digit the CPU vendor — 0 Intel, 5 AMD. Three-digit models (R760, R650, T550) drop the socket digit.

Prefix	Form factor	Examples
R	Rack	R760, R660, R7625, R6615, R750, R740xd
T	Tower	T560, T550, T440, T350, T150
C	Cloud / multi-node sleds	C6620, C6615, C6525, C6420
XE	Extreme — GPU and AI systems	XE9680, XE8640, XE7745, XE9640
MX	Modular (MX7000 chassis sleds)	MX760c, MX750c, MX740c
FX	Flex modular (FX2 chassis sleds)	FC640, FC630
XR	Rugged / edge	XR8620t, XR7620, XR5610, XR4520c
HS	Hyperscale (Dell Cloud Scale)	HS5610, HS5620

Memory by PowerEdge generation

Generation	Platform	Memory	Channels / notes
17G (R770, R670, R7715, R6715, XE9780)	Intel Xeon 6 · AMD EPYC 9005	DDR5-6400 ECC RDIMM	8 (Intel) or 12 (AMD) channels per socket. Select Intel configurations accept MRDIMM-8800.
16G (R760, R660, R7625, R6625, R7615, R6615, T560, C6620, XE9680, XR7620, MX760c)	4th / 5th Gen Xeon Scalable · EPYC 9004	DDR5-4800 ECC RDIMM (DDR5-5600 on 5th Gen Xeon and EPYC 9004 refresh)	8 (Intel) or 12 (AMD) channels per socket. No LRDIMM in DDR5 generations.
15G (R750, R650, R7525, R6525, R7515, R6515, R750xa, T550, C6525, XR11/XR12, MX750c)	3rd Gen Xeon Scalable · EPYC 7003 / 7002	DDR4-3200 ECC RDIMM or LRDIMM	8 channels per socket. RDIMM and LRDIMM cannot be mixed. 3DS RDIMM at 128GB and 256GB on select models.
14G (R740, R640, R740xd, R7425, R7415, R6415, T640, T440, C6420, MX740c, FC640)	1st / 2nd Gen Xeon Scalable · EPYC 7001 / 7002	DDR4-2666 / DDR4-2933 ECC RDIMM or LRDIMM	6 (Intel) or 8 (AMD) channels per socket. 2933 requires 2nd Gen Xeon; 1st Gen runs 2666.
13G (R730, R630, R730xd, R530, T630, T430, C6320, FC630)	Xeon E5-2600 v3 / v4	DDR4-2133 / DDR4-2400 ECC RDIMM or LRDIMM	4 channels per socket. 2400 requires v4 processors.
12G (R720, R620, R720xd, T620, R520)	Xeon E5-2600 / v2	DDR3-1333 / 1600 / 1866 ECC RDIMM or LRDIMM	4 channels per socket. Low-voltage (1.35V) modules on most configurations.
Entry / single-socket (T160, T360, R260, R360, T150, T350, R250, R350, T40, T140, R240, R340)	Xeon E-2400 / E-2300 / E-2200 · Pentium	DDR5-4400 / 4800 ECC UDIMM (T160/T360/R260/R360) · DDR4-3200 ECC UDIMM (T150/T350/R250/R350) · DDR4-2666 ECC UDIMM (T40/T140/R240/R340)	2 channels, 4 slots. Unbuffered only; registered modules will not post.

Generation lists are representative. The Dell part number on the installed module — or the 370- code on your order — is the authority. Search it on the Dell OEM part-number cross-reference, or send us the Service Tag.

How to find what is installed without downtime

1. iDRAC web interface → System → Inventory → Hardware Inventory → Memory. Every slot is listed with capacity, speed, rank, manufacturer, and the Dell part code (the 5-character core of the SNP number). This is the fastest way to know what to match.
2. racadm from a shell: racadm hwinventory or racadm get System.Memory returns the same inventory as text, which is convenient for a fleet script.
3. Dell Support → Service Tag → View original configuration. The memory lines carry the 370- codes and capacities the system shipped with.
4. OpenManage Enterprise exports memory inventory across the whole estate in one report — the right starting point for a multi-node upgrade quote.

Population rules that decide whether it posts

• One module type per system. RDIMM and LRDIMM cannot be mixed in any PowerEdge; entry servers take UDIMM only. If the system is populated with RDIMM, add RDIMM.
• Fill channels before doubling up. A two-socket 16G server has 16 or 24 channels; a two-socket 15G has 16. Dell's population table (white slots A1 through A8 first, then the black B slots) keeps every channel active. A single 64GB module in an 8-channel socket runs at one-eighth of the available bandwidth.
• Balance both sockets. Dell BIOS expects symmetric population across CPUs. Loading one socket and leaving the other empty leaves that CPU with no local memory and a performance warning at POST.
• Match capacity, speed, and rank within a socket. BIOS drops to the slowest module. Mixed ranks or capacities inside one channel can force a lower speed or block Mirror and Fault Resilient modes. Identical modules across the system are the safe configuration, which is why we sell matched kits sized to the channel count.
• Two DIMMs per channel costs speed. DDR4-3200 typically runs at 2933 at 2DPC on 15G; DDR5-4800 drops to 4400 at 2DPC on 16G. Capacity or bandwidth — decide which the workload needs before choosing 8×32GB over 4×64GB.
• The CPU sets the ceiling. A 14G board accepts 2933 modules; a Xeon Gold 5118 runs them at 2400. Check the processor's rated memory speed before paying for the faster grade.
• Memory operating modes need symmetric population. Optimizer is the default and accepts any valid layout. Mirror halves usable capacity and needs identical modules in paired channels. Fault Resilient and Single Rank Spare have their own layout tables in the Installation and Service Manual — check before enabling on a partial upgrade.

Sizing the upgrade

Typical 16G and 15G two-socket configurations ship at 128GB to 256GB. The workloads that justify the next step: virtualization density (VMware and Hyper-V hosts are memory-bound long before CPU-bound; 512GB to 1TB lets a host carry twice the VMs), in-memory databases and SAP HANA (sized to the dataset, commonly 1TB to 2TB), analytics and AI inference nodes (the XE and R760xa class, where GPU memory and system memory scale together), and VDI (per-desktop memory times seat count, plus headroom). Send the iDRAC inventory or the Service Tags and the target capacity, and we return the matched set — same module across every slot, sized to the channel count, with the 2DPC speed trade called out where it applies.

What "compatible equivalent" means

A NEMIX RAM module matched to a PowerEdge meets the Dell-qualified part on every attribute the memory controller checks: DDR generation, capacity, ECC, buffering (registered, load-reduced, or unbuffered), rated speed, rank organization, voltage, and pin count. It is built on DRAM from the same manufacturers Dell sources from and is tested in a PowerEdge of the target generation before listing. PowerEdge does not require Dell-branded memory: iDRAC reports the module's manufacturer and part number and the system runs at full spec with no warning, no lock, and no performance penalty. Mixing NEMIX RAM with Dell-branded modules of the same part number in one system is supported.

Frequently asked

Will the server log a warning with non-Dell memory? No. iDRAC and BIOS report the module as installed and run it at spec. There is no vendor lock on PowerEdge memory.

Does adding memory affect the Dell ProSupport contract? Memory is a customer-replaceable unit on every PowerEdge. The support contract remains; Dell may decline to troubleshoot issues it attributes to third-party modules, which is what our lifetime warranty and support cover.

Can I add to what is already installed? Yes, when type, capacity, speed, and rank match the installed modules. iDRAC shows all four. If the existing set is small and mismatched, replacing it with a matched kit is usually cheaper than working around it.

RDIMM or LRDIMM on a 15G/14G? RDIMM unless you need the capacity ceiling — LRDIMM exists to reach 2TB to 3TB per socket on DDR4 platforms. If the system already has one type, that decides it.

Does DDR5 PowerEdge take LRDIMM? No. 16G and 17G are RDIMM-only; high capacities use 128GB and 256GB RDIMMs instead.

NEMIX RAM can deliver any Configuration your Fleet Requires

Contact US

Speak to a Sales Representative

1-800-662-7466

Request a volume or PO quote ›

NEMIX RAM is an independent supplier of memory upgrades and is not affiliated with or endorsed by Dell Technologies. Dell, PowerEdge, and related marks are the property of their respective owners and are used here solely to identify compatibility.