The NEMIX RAM Dell catalog is now complete: 998 Dell listings, each matched to one Dell model or one Dell memory part number. That is 192 PowerEdge server listings, 400 business PC listings (OptiPlex, Latitude, Precision, Vostro and Dell Pro), 325 home and gaming listings (Inspiron, XPS, Alienware, G-Series and the Dell 14, 15 and 16) and 81 Dell part-number listings. This guide explains how to choose the right module for any of them — and where Dell's naming can catch you out.
The short answer: find the exact model from the Service Tag, check whether the system takes SODIMM, UDIMM or RDIMM and DDR4 or DDR5, and order the listing for that model in the kit size that fills your slots. Each listing offers only the sizes and kits that fit.
The Dell catalog at a glance
| Collection | Listings | Generation | Module types |
|---|---|---|---|
| PowerEdge servers | 192 | DDR5 58 · DDR4 116 · DDR3 9 | RDIMM, LRDIMM, ECC UDIMM |
| All Dell business PCs | 400 | DDR5 101 · DDR4 299 | SODIMM, UDIMM, ECC SODIMM, ECC UDIMM, RDIMM |
| ↳ OptiPlex desktops | 101 | DDR5 16 · DDR4 85 | SODIMM (Micro), UDIMM (SFF, Tower) |
| ↳ Latitude laptops | 70 | DDR5 7 · DDR4 63 | SODIMM |
| ↳ Precision workstations | 121 | DDR5 38 · DDR4 83 | SODIMM, ECC SODIMM, UDIMM, ECC UDIMM, RDIMM |
| ↳ Dell Pro and Pro Max | 38 | DDR5 38 | SODIMM, UDIMM |
| ↳ Vostro | 73 | DDR5 5 · DDR4 68 | SODIMM, UDIMM |
| All Dell home and gaming PCs | 325 | DDR5 77 · DDR4 248 | SODIMM, UDIMM |
| ↳ Inspiron | 201 | DDR5 14 · DDR4 187 | SODIMM, UDIMM |
| ↳ XPS | 21 | DDR5 7 · DDR4 14 | SODIMM, UDIMM |
| ↳ Alienware | 51 | DDR5 24 · DDR4 27 | SODIMM, UDIMM |
| ↳ G-Series | 27 | DDR5 9 · DDR4 18 | SODIMM, UDIMM |
| ↳ Dell 14, 15, 16, Slim and Tower | 25 | DDR5 23 · DDR4 2 | SODIMM, UDIMM |
| Dell part numbers (SNP / AA / AB) | 81 | DDR5 5 · DDR4 57 · DDR3 19 | RDIMM, LRDIMM, UDIMM, SODIMM |
For the family-by-family reference, see the Dell memory guide; for every PowerEdge server by generation, the PowerEdge memory guide.
Step 1: Identify the exact model
The Service Tag on the label (the bottom of a laptop, the side or back of a desktop, the front pull-out tag of a PowerEdge) is the fastest route: enter it at Dell Support and you get the exact model and its original memory. It matters because Dell reuses names across memory generations:
- OptiPlex 7010: the Small Form Factor 7010 takes DDR4-3200, while the Small Form Factor Plus 7010 takes DDR5-4800. One word on the label changes the module.
- OptiPlex 7020: both versions are DDR5-5600, but the Small Form Factor 7020 tops out at 64GB on our listing while the Small Form Factor Plus 7020 goes to 128GB.
- Dell 15 DC15250: sold with either DDR4-3200 or DDR5-5200 depending on configuration. Check the installed module or the Service Tag before ordering.
- Alienware m16 R1: the Intel model runs DDR5-5600 and the AMD model DDR5-5200. Same chassis name, different listing.
- Alienware Aurora: the Aurora R15 takes DDR5-4800 and the Aurora R16 DDR5-5600.
Step 2: Read what the model name tells you
PowerEdge. The letter is the form factor: R for rack, T for tower, C for dense multi-node, M/MX for modular, and XE/XR for GPU and edge systems. In a three-digit Intel name such as R760, the first digit is the class, the second the generation (3 = 13th, 4 = 14th, 5 = 15th, 6 = 16th, 7 = 17th) and the trailing 0 marks Intel. AMD servers use four digits: in the R7625, the third digit is the socket count and the final 5 marks AMD. The generation sets the memory:
- 17th generation (R770, R7715): DDR5-6400 RDIMM.
- 16th generation (R760, R660, R7625): DDR5 RDIMM. The R760 has a DDR5-4800 listing for 4th Gen Xeon Scalable and a DDR5-5600 listing for 5th Gen, so match the processor too.
- 15th generation (R750, R650, R7525): DDR4-3200 RDIMM, with LRDIMM on many models.
- 14th generation (R740, R640, R840): DDR4-2666 or 2933 RDIMM, and LRDIMM for the largest configurations, such as the R840 LRDIMM listing at up to 2TB.
- 13th generation (R730, R630, T630): DDR4-2400 RDIMM (2133 with Xeon E5-2600 v3 processors), and LRDIMM for the largest configurations, such as the R730 LRDIMM listing at up to 3TB.
- Entry servers (R250, R360, T160, and the 13th-generation R230): ECC UDIMM, not registered memory.
OptiPlex, Vostro and Dell Pro desktops. Micro and All-in-One models take SODIMMs (OptiPlex Micro 7020, Dell Pro Micro); Small Form Factor and Tower models take full-size UDIMMs (Vostro 3020 Tower, Dell Pro Max Tower T2). Most models from 2022 on are DDR5.
Precision workstations. The 3000-series towers such as the Precision 3660 and 3680 accept non-ECC or ECC UDIMM, and we list both: 3680 non-ECC and 3680 ECC. The Xeon W Precision 5860 and Precision 7960 take registered RDIMM, up to 2TB and 4TB on our listings. Mobile Precision models take SODIMM, with an ECC option on models such as the Precision 7680.
Dell's 2025–26 names. Dell now sells consumer systems as Dell (the Dell 16, the Dell Tower ECT1250), business systems as Dell Pro (the Dell Pro 16 Plus) and workstations as Dell Pro Max and Dell Pro Precision (the Dell Pro Precision 7 T1). The model code on the label, such as DC16255 or PB16250, is what identifies the memory.
Step 3: Match the module type
| System | Module | Examples |
|---|---|---|
| Laptops, 2-in-1s, Micro desktops, all-in-ones | SODIMM | Latitude 5550, Inspiron 16 Plus 7630, XPS 15 9530, Alienware 18 Area-51 |
| Small Form Factor and Tower desktops | UDIMM | Inspiron 3030, XPS 8960, Aurora R16 |
| Workstation towers (entry) | UDIMM or ECC UDIMM | Precision 3660, Precision 3680 |
| Workstation towers (Xeon W) | RDIMM | Precision 5860, Precision 7960 |
| Entry PowerEdge | ECC UDIMM | R250, R360, T160 |
| Mainstream PowerEdge | RDIMM (LRDIMM for the largest DDR4 builds) | R760, R750, R740 |
SODIMM, UDIMM and RDIMM are not interchangeable, and DDR4 and DDR5 are keyed differently, so the wrong module will not seat. Inside a server, use one type only: no mixing RDIMM with LRDIMM.
Step 4: Choose the capacity and the kit
- Fill slots in matched sets. Two identical modules run dual-channel on laptops and desktops. Replacing a single factory module with a matched kit usually gains more than adding a mismatched second module.
- Respect the model's maximum. Entry laptops such as the Latitude 3440 and 3540, Inspiron 15 3520 and Vostro 3520 top out at 16GB on our listings; most current DDR5 laptops reach 64GB; Small Form Factor and Tower desktops reach 64GB or 128GB.
- Servers fill by channel. Populate every memory channel of each processor with identical modules — eight per CPU on most current Xeon and twelve on current EPYC platforms — for full bandwidth.
Speed: what Dell rates is what you get
A faster module of the right generation and type runs at the speed the processor and slot population support, so there is no harm in a DDR5-5600 module where Dell rates 4800, and no benefit to paying for more. Gaming systems that advertise XMP or overclocked speeds are listed at Dell's standard speed: for example the G16 7630 at DDR5-4800 and the G5 15 5500 at DDR4-2933.
Buying by Dell part number
Dell sells memory under an SNP part number and a Dell AA or AB number, and you will find them on Dell quotes and order paperwork. If you are matching modules already installed or ordering against a Dell quote, the Dell part number collection lists the NEMIX RAM equivalent by both numbers — for example SNPP2MYXC/64G (AA783423), 64GB DDR4-3200 RDIMM, or SNPVNY72C/16G (AB949334), 16GB DDR5-4800 SODIMM.
Models with soldered memory
Many thin Dell laptops have memory soldered to the system board: most XPS 13, 14 and 16 models, the Dell 14 and 16 Plus, and the Alienware x14, x15 and x16. These cannot be upgraded, so they are not listed. Larger models such as the XPS 17 9730, the Latitude Rugged line and the Alienware m16 and m18 keep replaceable SODIMM slots.
Buying for a Dell fleet
Most Dell memory is bought in quantity: an IT department refreshing a floor of OptiPlex desktops, a school district upgrading Latitudes, a data center adding capacity to PowerEdge clusters. Send us a list of models or Service Tags and we will match every system and quote it as one order. Purchase orders, net terms and volume pricing are available for business, government and education buyers — request a quote or contact us.
Frequently asked questions
How do I find out which memory my Dell takes?
Enter the Service Tag on the label at Dell Support to confirm the exact model, then search that model on nemixram.com. Each listing states the memory type, speed and the module sizes and kits that fit that model's slots.
Why does my OptiPlex 7010 come in two different memory types?
Dell sold two generations under the 7010 name. The OptiPlex Small Form Factor 7010 and Tower 7010 take DDR4-3200 UDIMM, while the Small Form Factor Plus 7010 and Tower Plus 7010 take DDR5-4800 UDIMM. The modules are keyed differently and do not interchange, so check for the word Plus on the label.
Can I install a faster module than my Dell is rated for?
Yes, within the same generation and module type. A DDR5-5600 module in a system rated for DDR5-4800 runs at 4800. The reverse is not true: a slower module limits the system to the slower speed.
What is the difference between RDIMM, LRDIMM and ECC UDIMM for PowerEdge?
Entry PowerEdge servers such as the R250, R360 and T160 take ECC UDIMM. Mainstream rack and tower servers take registered RDIMM, and LRDIMM is the higher-capacity option on the 13th, 14th and 15th generation DDR4 servers. A server takes one type at a time: never mix RDIMM with LRDIMM, or UDIMM with either.
Can I add NEMIX RAM to the Dell memory already installed?
Yes, if the new modules match the installed ones in generation, type, capacity and speed. For dual-channel performance on laptops and desktops, add modules in matched pairs, or replace the factory module with a matched kit.
Why is my Dell laptop not listed?
Many thin Dell laptops, including most XPS 13, 14 and 16 models, the Dell 14 and 16 Plus and the Alienware x14, x15 and x16, have memory soldered to the system board and cannot be upgraded. We list only models with a replaceable memory slot.
Why NEMIX RAM for Dell
Every Dell listing names the exact model or Dell part number it fits and offers only the sizes and kits that fit that system. Researched, matched, and compatibility-tested by NEMIX RAM, a US-based server memory specialist since 1993, and backed by a lifetime warranty. Questions about a specific Dell? Send us the model or Service Tag and we will confirm the right module before you order.