Dell PowerEdge T640 Tower Server
The Dell PowerEdge T640 is a 14th Generation dual-socket tower server that delivers R740-class compute in a tower form factor. It supports Intel Xeon Scalable processors with up to 28 cores per socket, 24 DDR4 DIMM slots with up to 3 TB of LRDIMM, and up to 32x 2.5-inch or 18x 3.5-inch drive bays — more local storage than the R740 rack server.
Enterasource offers the T640 configured to order. Each server is tested through our multi-point hardware diagnostic process and backed by a 2-year Enterasource warranty.
The T640 supports GPU accelerators, up to 8 NVMe drives, NVDIMM persistent memory, and PSU options up to 2400W. Its tower form factor operates quieter than rack-mounted servers, making it suitable for office environments, remote sites, and edge deployments. An optional rack conversion kit enables 5U rackmount installation. For organizations that need R740-level performance without a dedicated rack, the T640 is the tower alternative.
What to Expect from Enterasource
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Complimentary ground shipping on orders over $50 throughout the contiguous United States (exclusions apply to Hawaii and Alaska).
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Industry-leading next business day parts
replacement warranties to ensure your equipment stays up and running.
Our commitment to exceptional customer service and timely delivery make us the ideal choice for all your IT hardware needs. Choose Enterasource for a hassle-free experience and the highest quality product on the market.

Description
Dell PowerEdge T640 Specifications
| Specification | Details |
|---|---|
| Form Factor | Tower or 5U Rackmount (with conversion kit) |
| Processors | Up to 2x Intel Xeon Scalable (up to 28 cores per socket) |
| Max Cores | 56 total |
| Memory Slots | 24x DDR4 RDIMM/LRDIMM |
| Max Memory | 3 TB (up to 2666 MT/s) |
| NVDIMM Support | Up to 12 NVDIMMs, 192 GB max |
| Drive Bays | Up to 18x 3.5" (216 TB) or 32x 2.5" (122 TB) or 16x 2.5" + 8x NVMe |
| RAID Controllers | S140 (SW), H330, H730P, H740P, HBA330, H840 (external) |
| BOSS Card | 2x M.2 SATA (120/240 GB) RAID1 |
| PCIe Slots | Multiple PCIe Gen 3 |
| GPU Support | Internal GPU accelerators |
| Management | iDRAC9 with Lifecycle Controller, Quick Sync 2 |
| Power Supply | 495W/750W/1100W/1600W/2000W/2400W Platinum, 750W Titanium, 1100W 48VDC |
| Chassis Depth | 708.7 mm |
| Cooling | Up to 8 fans (6 hot-plug internal + 2 external) with N+1 redundancy |
The T640 offers more local storage than the R740 rack server: up to 32x 2.5-inch drives (matching the R740xd) or 18x 3.5-inch drives (exceeding any R740 variant). This makes the T640 a viable tower alternative for storage-heavy workloads.
Dell T640 vs R740 — Tower vs Rack
| Feature | T640 (Tower/5U) | R740 (2U Rack) |
|---|---|---|
| Form Factor | Tower or 5U Rack | 2U Rack |
| Processors | Same (Xeon Scalable, up to 28 cores) | Same |
| DIMM Slots / Max RAM | 24 / 3 TB | 24 / 3 TB |
| Max Drives | 18x 3.5" or 32x 2.5" | 8x 3.5" or 16x 2.5" |
| NVMe | Up to 8 | Via PCIe |
| NVDIMM | Up to 12 | Up to 12 |
| GPU | Yes | Up to 3x 300W DW |
| Max PSU | 2400W | 2400W |
| Rack Density | 8 per 42U (5U each) | 21 per 42U |
| Office Use | Yes (quieter) | Requires rack |
| Chassis Depth | 708 mm | 715 mm |
Choose the T640 when you need a tower form factor for office or non-datacenter environments, or when you need more local storage than the R740 can provide. Choose the R740 when rack density matters (2U vs 5U).
Dell T640 vs T440 — Full-Featured vs Entry Tower
| Feature | T640 | T440 |
|---|---|---|
| Max Cores Per CPU | 28 | 14 |
| DIMM Slots | 24 | 16 |
| Max Memory | 3 TB | 1 TB |
| Max Drives | 18x 3.5" or 32x 2.5" | 8x 3.5" or 16x 2.5" |
| NVMe | Up to 8 | None |
| NVDIMM | Up to 12 | None |
| GPU | Yes | None |
| Max PSU | 2400W | 1100W |
Choose the T640 for full Xeon Scalable performance with GPU, NVMe, NVDIMM, and maximum storage. Choose the T440 for budget tower deployments where 14 cores and 1 TB RAM is sufficient.
Browse all Dell PowerEdge servers available at Enterasource.
Frequently Asked Questions
Is the Dell T640 still worth buying?
Yes — the T640 is worth buying when there is no rack to put a server in, or when you want R740-class compute with more local storage than a 2U allows. It is a 14th Generation dual-socket tower taking Intel Xeon Scalable processors to 56 cores, with 24 DDR4 DIMM slots, GPU support, and up to 18x 3.5-inch or 32x 2.5-inch drives — more 3.5-inch capacity than any R740 variant. Tower cooling also runs quieter than rack hardware, which matters in offices and branch sites. The tradeoff is density: converted to rack with the optional kit it occupies 5U, so roughly eight fit a 42U rack against twenty-one R740s. Choose the R740 instead if rack density is the priority.
Can the Dell T640 be rackmounted?
Yes. The T640 converts to a 5U rackmount configuration with an optional rack conversion kit. It occupies 5U of rack space, compared to the R740's 2U.
What is the difference between the Dell T640 and R740?
Same processor, memory, and management platform. The T640 is a tower (or 5U rack) with more drive bays (up to 32x 2.5-inch vs 16) and quieter operation for office environments. The R740 is 2U rack with 2.5x better rack density. Choose the T640 for maximum local storage or office deployment. Choose the R740 for datacenter rack density.
What generation is the Dell T640?
The Dell PowerEdge T640 is a 14th Generation (14G) tower server using Intel Xeon Scalable processors. The 13th Gen predecessor is the T630.
How much does a refurbished Dell T640 cost?
Pricing depends on processor, memory, storage, and GPU configuration. Enterasource builds every T640 to order with a 2-year warranty and free ground shipping to the lower 48 states.
Resources
Technical Specs
| Part Type | Server |
|---|---|
| Manufacturer | Dell |
| MPN | T640 |
| Condition | Refurbished |
| Product Line | PowerEdge |
| Generation | 14th |
| Form Factor | Tower |
| Rack Units | 5U |
| Processor Manufacturer | Intel |
| CPU Series | 2nd Gen Scalable |
| CPU Slots | 2 |
| Max CPU Operating Frequency | 3.5GHz |
| Memory Speed Supported | PC3-14900 |
| Transfer Rates Supported | 3Gbps, 6Gbps |
| DIMM Slots | 24 |
| Memory Riser Support | No |
|---|---|
| Internal Controllers Supported | PERC H310 (PCI-E), PERC H710 (PCI-E), PERC H710P (PCI-E) |
| External Controllers Supported | PERC H810, PERC H830, 6Gbps SAS HBA |
| RAID Levels Supported | 0, 1, 5, 6, 10, 50, 60 |
| Drive Types Supported | NL SAS, SAS, SATA, SSD |
| Base NIC | 2x 1GBASE-T LOM |
| PCI-E Slots | 7 |
| PCI-E Version | 2.0, 3.0 |
| USB Ports | 5 |
| Power Supply Type | AC, DC |
| Power Supply Slots | 2 |
| PSU Wattage | Up to 1100W |
| System Management | iDRAC7 |
| Optical Drive Support | Yes |
| Card Reader Support | MicroSD Card Reader Optional |
