This guide covers everything you need to know about upgrading the RAM and storage on the Dell PowerEdge R640 (2018). Whether you want faster performance, more memory, or additional storage space, we have the compatibility details and recommended upgrades below.
Dell PowerEdge R640 — Quick Specs

| Specification | Details |
|---|---|
| Model | Dell PowerEdge R640 |
| Year | 2018 |
| Type | Server |
| Processor | Intel Xeon Scalable (1st/2nd Gen) |
| RAM Type | DDR4 ECC RDIMM/LRDIMM |
| RAM Form Factor | RDIMM |
| Max RAM | 1536GBGB |
| RAM Slots | 24 DIMM slots |
| Storage Type | NVMe/SATA SSD |
| Storage Slots | Up to 10x 2.5-inch bays |
Dell PowerEdge R640 Memory (RAM) Upgrade
The Dell PowerEdge R640 supports DDR4 ECC RDIMM/LRDIMM RDIMM memory modules with a maximum capacity of 1536GBGB. It has 24 DIMM slots.
Recommended RAM Upgrades
| Recommended RAM | Buy |
|---|---|
| Samsung DDR4 ECC RDIMM 32GB 3200MHz | Check Price |
| Kingston Server Premier DDR4 32GB 2666MHz ECC | Check Price |
| Samsung DDR4 ECC RDIMM 16GB 2666MHz | Check Price |
| Micron DDR4 LRDIMM 64GB 2933MHz | Check Price |
Dell PowerEdge R640 Storage (SSD/HDD) Upgrade
The Dell PowerEdge R640 supports NVMe/SATA SSD storage with Up to 10x 2.5-inch bays.
Recommended SSD Upgrades
| Recommended SSD | Buy |
|---|---|
| Samsung 970 EVO Plus 1TB NVMe M.2 | Check Price |
| WD Black SN770 1TB NVMe M.2 | Check Price |
| Crucial P3 Plus 500GB NVMe M.2 | Check Price |
| Samsung 870 EVO 1TB 2.5" SATA | Check Price |
| Crucial MX500 500GB 2.5" SATA | Check Price |
Upgrade Difficulty
The Dell PowerEdge R640 has an upgrade difficulty rating of Moderate. Most users can upgrade the RAM and SSD with basic tools (Phillips screwdriver). Always disconnect the battery before performing any internal upgrades.
Upgrade Tips for the Dell PowerEdge R640
- Back up all data before replacing or adding storage drives.
- Use an anti-static wrist strap to prevent damage to components.
- Match RAM speed and type (DDR4 ECC RDIMM/LRDIMM RDIMM) for best compatibility.
- Check your current configuration in the BIOS before ordering parts.
- Consider cloning your existing drive to a new SSD for a seamless transition.
Related Guides
Frequently Asked Questions
What is the maximum RAM for the Dell PowerEdge R640?
The Dell PowerEdge R640 supports a maximum of 1536GBGB of DDR4 ECC RDIMM/LRDIMM RDIMM memory across 24 DIMM slots.
What type of SSD does the Dell PowerEdge R640 use?
The Dell PowerEdge R640 uses NVMe/SATA SSD storage with Up to 10x 2.5-inch bays.
Can I upgrade the RAM in the Dell PowerEdge R640?
Yes, the Dell PowerEdge R640 has 24 DIMM slots supporting DDR4 ECC RDIMM/LRDIMM RDIMM modules up to 1536GBGB total.
Is the Dell PowerEdge R640 worth upgrading?
Upgrading the RAM and SSD in the Dell PowerEdge R640 can significantly improve performance, especially if you are running out of memory or storage space.
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