DELL PowerEdge T640 Tower Server
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Condition
Refurbished
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CPU
2×8GB DDR4 RDIMM 2133MHz
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RAM
noHDD (up to 8 HDD 2.5'' SFF)
-
Condition
Refurbished
-
CPU
2×8GB DDR4 RDIMM 2133MHz
-
RAM
noHDD (up to 8 HDD 2.5'' SFF)
-
Condition
Refurbished
-
CPU
2×8GB DDR4 RDIMM 2133MHz
-
RAM
noHDD (up to 8 HDD 2.5'' SFF)
-
Condition
Refurbished
-
CPU
2×8GB DDR4 RDIMM 2133MHz
-
RAM
noHDD (up to 8 HDD 2.5'' SFF)
Processor
Up to 2 x 2nd Generation Intel® Xeon® Scalable processors, up to 28 cores per processor
Memory
DDR4: up to 24 x RDIMM/LRDIMM (3 TB), speed up to 2993 MT/s, registered ECC only; optional NVDIMM support
Storage controllers
- Internal RAID: PERC H330, H730P, H740P, HBA330
- External: H840, 12Gbps SAS HBA
- Software RAID: S140
- Boot: BOSS HWRAID 2 x M.2 SSDs
Drive bays
Front bays
- Up to 18 x 3.5-inch SAS/SATA (HDD/SSD)
- Up to 32 x 2.5-inch SAS/SATA (HDD/SSD)
- Up to 16 x 2.5-inch SAS/SATA/NVMe with up to 8 NVMe
Rear bays
- N/A
Power supplies
- 750 W Titanium
- 495 W / 750 W / 1100 W / 1600 W / 2000 W / 2400 W Platinum
- 1100 W 48 VDC
- 750 W 240 HVDC
Cooling and fans
Air cooling; up to 8 fans with N+1 redundancy
Dimensions
- Height: 443.5 mm (17.5 inches)
- Width: 304.5 mm (11.99 inches)
- Depth: 708.7 mm (27.90 inches)
- Weight: up to 49.65 kg (109.45 lb)
Form factor
Tower or rack, 5U
Embedded management
- iDRAC9
- iDRAC Direct
- iDRAC RESTful API with Redfish
- Quick Sync 2 optional
Security
- TPM 1.2/2.0 optional
- Cryptographically signed firmware
- Silicon Root of Trust
- Secure Boot
- System Lockdown
- System Erase
Networking
- 2 x 10GbE LOM (1GbE/10GbE)
GPU options
Up to 4 x double-width or 8 x single-width GPUs
Ports
Front ports
- 1 x USB 2.0
- 1 x USB 3.0
- 1 x iDRAC Direct Micro-USB
- 1 x VGA in rack configuration
Internal ports
- 1 x USB 3.0
Rear ports
- 2 x USB 2.0
- 4 x USB 3.0
- 1 x VGA
- 1 x Serial
PCIe
Up to 8 x PCIe Gen3 slots
Operating systems
- Canonical Ubuntu LTS
- Citrix Hypervisor
- Microsoft Windows Server LTSC with Hyper-V
- Red Hat Enterprise Linux
- SUSE Linux Enterprise Server
- VMware ESXi
Dell PowerEdge T640 overview
Dell PowerEdge T640 is a rack-capable tower server with up to two sockets for data-heavy tower workloads, virtualization, databases, analytics, imaging, VDI and software-defined storage. It is designed for environments that need a careful balance of compute performance, memory capacity, storage flexibility, management features and long-term serviceability.
The T640 server is based on up to two 2nd Generation Intel Xeon Scalable processors. It supports 24 DDR4 RDIMM/LRDIMM slots, up to 3 TB, speeds up to 2933 MT/s, with up to 12 NVDIMM-N modules in selected configurations, Dell iDRAC management through iDRAC9, 2 x 10GbE LOM ports, up to 8 PCIe Gen3 slots and up to 8 or 18 x 3.5-inch SAS/SATA drives, up to 16 or 32 x 2.5-inch SAS/SATA drives, or up to 16 x 2.5-inch with up to 8 NVMe drives.
Dell PowerEdge T640 is suitable for the workload categories listed below and should be treated as a high-expandability tower or 5U rack platform for demanding local infrastructure. Compared with newer or larger Dell PowerEdge platforms, this model should be selected when its generation, form factor, storage layout and cost profile match the project.
When to choose Dell PowerEdge T640
Choose Dell PowerEdge T640 when the workload needs rack-capable tower server with up to two sockets characteristics, predictable local storage and Dell PowerEdge management. It is a good fit for data-heavy tower workloads, virtualization, databases, analytics, imaging, VDI and software-defined storage.
Compared with smaller or entry platforms, Dell PowerEdge T640 provides more appropriate headroom for its target role. Compared with larger or newer PowerEdge systems, it should be selected when acquisition cost, compatibility with existing infrastructure and the exact drive layout are more important than the latest platform generation.
The T640 configuration should be validated carefully for processor count, memory population, drive bay layout, storage controller, boot device, risers, network adapters, power supplies, fans and cooling. This is especially important for NVMe, rear-drive, GPU, redundant power and mixed-drive configurations.
Chassis and drive bay options
Dell PowerEdge T640 supports the following practical chassis, drive and configuration options. The right choice depends on whether the server is being configured for capacity, SSD responsiveness, NVMe performance, boot separation, redundant power or accelerator support.
| Chassis option | Best for | Comment |
|---|---|---|
| Dell PowerEdge T640 8LFF | capacity-oriented local storage, file services and backup | Use this option when 3.5-inch capacity matters more than maximum IOPS. Supports up to 8 x 3.5-inch SAS/SATA HDD/SSD drives, with larger 18LFF options available in selected builds. Final compatibility depends on controller, cables, power and cooling. |
| Dell PowerEdge T640 18LFF / 32SFF capacity layouts | mixed capacity, performance and rear-drive expansion | Use this option when the server needs both local capacity and additional rear or mixed-drive expansion. Supports up to 18 x 3.5-inch drives or up to 32 x 2.5-inch drives depending on chassis and backplane. |
| Dell PowerEdge T640 NVMe-enabled layouts | SSD responsiveness, NVMe performance and latency-sensitive workloads | Use this option when low-latency SSD or NVMe performance is required. Supports up to 16 x 2.5-inch drives with up to 8 NVMe drives, max 112 TB in the listed NVMe configuration; confirm backplane, controller, cabling and thermal rules. |
| Dell PowerEdge T640 GPU configurations | validated accelerator, VDI or GPU-enabled workloads | Use only validated accelerator combinations. Supports up to 4 double-width or 8 single-width GPU options in supported power and cooling configurations; check risers, power cables, fans and thermal limits. |
| Dell PowerEdge T640 tower or 5U rack chassis | tower placement with optional rack conversion | Use this option when tower deployment is preferred but future rack placement is possible. Supports high-expandability tower platform with optional rack deployment and up to 8 PCIe Gen3 slots. |
For capacity workloads, LFF configurations are usually the practical starting point. For latency-sensitive databases, virtualization datastores and high-IO workloads, SFF SSD or NVMe-capable configurations should be considered where the platform supports them.
Final drive compatibility depends on the selected chassis, backplane, controller, cables, risers, cooling configuration and Dell support matrix. Do not assume that every drive type, controller and rear-drive option can be combined in one configuration.
Recommended Dell PowerEdge T640 configurations by workload
| Workload | Recommended focus |
|---|---|
| Virtualization / private cloud | Balanced CPU count, large memory pool, SSD or NVMe storage where supported, redundant networking and validated boot media. |
| Databases / data management | Processor choice matched to licensing and query profile, enough RAM for cache, low-latency SSD or NVMe storage and protected arrays. |
| Backup / archive | Capacity drive layout, moderate CPU/RAM, controller mode and network throughput sized for backup windows and restore targets. |
| Software-defined storage / HCI | Drive layout, HBA/JBOD or controller mode, network bandwidth and CPU/RAM sized for the selected SDS or HCI platform. |
| VDI | High RAM density, predictable CPU performance, fast storage and validated GPU options when graphics acceleration is required. |
| GPU-accelerated workloads | Validated GPU or FPGA model, risers, power cables, cooling limits and memory sizing checked before purchase. |
| File, print and collaboration | Capacity HDDs for shared files, SSDs for responsiveness, simple RAID and network bandwidth matched to user count. |
| Mixed enterprise workloads | Balanced CPU, RAM, storage and NIC choices, with headroom for failover, maintenance and growth. |
The T640 configuration should be chosen around the main reason for selecting this platform: a high-expandability tower or 5U rack platform for demanding local infrastructure, 24 DDR4 DIMM slots / up to 3 TB plus selected NVDIMM options, large LFF/SFF/NVMe tower storage, Dell iDRAC9 management and a validated power, cooling and controller design.
How to choose CPU, RAM, RAID and storage
Dell PowerEdge T640 supports up to two 2nd Generation Intel Xeon Scalable processors. CPU choice should be tied to workload profile, software licensing and thermal limits. up to 28 cores per processor help when virtualization, databases or multi-user services need more parallelism, while higher clock speed can matter for applications sensitive to per-core performance.
RAM planning should start with VM density, database cache requirements, application growth and backup or monitoring agents. Dell PowerEdge T640 supports 24 DDR4 RDIMM/LRDIMM slots, up to 3 TB, speeds up to 2933 MT/s, with up to 12 NVDIMM-N modules in selected configurations. Memory speed and maximum capacity depend on processor choice and DIMM population, so the final layout should be validated before ordering.
For storage, use large LFF/SFF/NVMe tower storage when it matches the workload. up to 8 or 18 x 3.5-inch SAS/SATA drives, up to 16 or 32 x 2.5-inch SAS/SATA drives, or up to 16 x 2.5-inch with up to 8 NVMe drives. Boot devices such as BOSS or internal M.2 options can separate OS or hypervisor boot from the main data drives where supported.
RAID and HBA choice should be made before finalizing drive count. PERC H330, H730P, H740P, HBA330, S140, BOSS M.2 boot and external H840/HBA options. Hardware RAID is appropriate for classic protected arrays, while HBA/JBOD or software RAID may be better for selected software-defined storage designs.
Network, GPU and power choices should also be checked as a single configuration. Dell PowerEdge T640 includes or supports 2 x 10GbE LOM ports, up to 8 PCIe Gen3 slots, up to 4 double-width or 8 single-width GPU options in supported configurations, and 495W to 2400W hot-plug redundant power supply options, including Platinum and Titanium choices. Validate risers, airflow and power supply redundancy before purchase.
Dell PowerEdge T640 vs related Dell PowerEdge models
| Model | When to consider |
|---|---|
| Dell PowerEdge T440 | Choose T440 when a rack-capable two-socket tower is needed for SMB or branch infrastructure. |
| Dell PowerEdge R740 | Choose R740 when a mainstream 2U dual-socket platform with more accelerator and expansion flexibility is required. |
| Dell PowerEdge R740xd | Choose R740xd when a storage-optimized 2U server with extensive SFF, LFF, NVMe, mid-bay or rear-bay options is required. |
| Dell PowerEdge R760 | Choose R760 when a newer DDR5 2U platform is preferred for performance, NVMe and modern accelerator support. |
| Dell PowerEdge T560 | Choose T560 when a newer DDR5 tower with stronger compute, storage and GPU options is required. |
| Dell Tower Servers | Choose Servers when a tower form factor is preferred for office or branch deployment instead of rack-first infrastructure. |
Dell PowerEdge T640 should be evaluated against the related Dell PowerEdge models above, because form factor, processor generation, memory type, drive layout and expansion strategy have a direct impact on workload fit.
Summary: is Dell PowerEdge T640 the right server for your workload×
Dell PowerEdge T640 is a practical Dell PowerEdge platform for data-heavy tower workloads, virtualization, databases, analytics, imaging, VDI and software-defined storage. Choose it when you need 2nd Gen Intel Xeon Scalable, 24 DDR4 DIMM slots / up to 3 TB plus selected NVDIMM options, large LFF/SFF/NVMe tower storage, Dell iDRAC9 management and a configuration that fits the server generation and workload profile.
Before purchase, confirm processor model, CPU count, RAM population, chassis type, drive support, RAID or HBA mode, BOSS or M.2 boot option, networking, optional GPU support, power supply redundancy, cooling and warranty requirements.
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