| Brand: | Dell |
| Model: | PowerEdge R640 |
| Grade: | Grade A |
| Storage support: | 8x 2.5" |
| CPU: | 2x Intel Xeon 14-Core Gold |
| CPU frequency: | 6132 2600MHz 19.25MB |
| Memory size: | 128GB |
| Memory type: | RDIMM DDR4 |
| Storage capacity: | No storage |
| Storage type: | SAS 2.5" |
| RAID Controller: | PERC H730P/2GB Mini Mono with BBWC |
| Network card type: | 2-port 1Gb Ethernet, 2-port 10Gb Ethernet rNDC |
| PSU: | 2x 1100W Platinum |
| Management: | iDRAC9 Enterprise |
| Case type: | Rack Mount 1U |
| Warranty: | 12 months |
Delivers strong compute capability in a compact chassis, allowing more nodes in the same rack.
The iDRAC9 ecosystem makes remote administration, firmware maintenance and standardized operations easier.
Works well as a virtualization host, application node, backup proxy, management server or part of a larger cluster.
As a refurbished server, the R640 often provides a more capable enterprise platform than a new entry-level tower or rack server.
Dell PowerEdge R640 is a server for situations where rack space has a real cost. It is not a 2U platform that relies on extra internal volume and easier expansion; it is a 1U system designed around density, predictability and rapid deployment of compute nodes.
Its strength is the balance between compact size and enterprise-class architecture. The R640 should not be treated as a universal storage server; it is better understood as a compute unit that can become part of a wider infrastructure.
As a used server, the R640 makes particular sense when it is sold with a clear configuration, tested memory, working power supplies, checked fans, a storage controller appropriate to the exact unit and a real warranty.
The compromise is typical for 1U servers: they are dense, but they are not the quietest or most spacious option. If you need substantial local storage, more PCIe cards or easier physical access inside the chassis, PowerEdge R740 or R740xd may be a better fit.
For small and medium clusters where every rack unit matters.
For separating business applications, middleware, internal services or test environments.
When several similar nodes make the environment easier to support.
When reliability is needed but 2U storage capacity is not the main requirement.
This map shows which applications Dell PowerEdge R640 fits best as a refurbished server and where another form factor, configuration or more specialized platform may be the better choice. The ratings describe the model role, while the final decision should still follow CPU, memory, controller, drive, networking and warranty requirements.
Strong 1U choice for multiple VMs or clusters of similar nodes, especially where rack space is limited.
Suitable as a compute node for private cloud or internal cloud infrastructure when the storage layer is separate or shared.
Can provide local storage depending on configuration, but it is not a storage-first model; the R740xd is more logical for drive-heavy designs.
Good as a backup proxy, smaller repository or management node; large backup archives are better served by a 2U storage platform.
The compact 1U format fits branch racks, local cabinets and edge compute roles.
Suitable for CPU compute nodes in a cluster, but not the first choice for workloads requiring many GPUs or large internal volume.
Can support critical services as part of a cluster or HA design, but should not be a single point of failure.
Good for moderate databases and test or production systems with shared storage; very large local arrays favor the R740xd.
Very suitable for web applications, API services and scale-out web tiers.
Useful for CPU inference, preparation tasks or light ML environments; not a first choice for GPU-heavy training.
Makes sense as a compute node in distributed analytics, not as the main local data lake.
Suitable for edge and cache nodes where density and remote management matter.
Good for corporate mail services, gateways or separated messaging components.
Practical for labs, staging environments, CI/CD runners and isolated test VMs.
Can host game server processes when a stable rack server is needed, but it is not a graphics-oriented platform.
Suitable for local processing, gateway roles and data collection from IoT devices.
Can host SharePoint, Confluence and similar tools when RAM, storage and backup are sized correctly.
Good for management or analytics layers, but not ideal as a large video-storage server.
Very good for load balancers, reverse proxies, gateways and network-facing services.
Suitable for moderate streaming services; large media libraries need a separate storage layer.
Good for ERP/CRM components and VDI compute roles when storage and redundancy are designed separately.
Very suitable for Redis, Memcached and other RAM-oriented cache services if enough memory is installed.
Suitable for shared folders and project files when the data volume does not require a storage-first chassis.
Very suitable for DNS, DHCP, Active Directory/LDAP and other internal infrastructure services.
Browse the filtered configurations for this model or send a CTO request based on workload, budget and warranty needs.
The R640 is the compact compute model in this group. Compared with the R740, it uses half the rack height but does not offer the same internal room for drives and PCIe expansion. Compared with the R740xd, it is a compute node rather than a storage-first platform.
Not ideal if you need maximum local storage, multiple internal PCIe expansions, low noise in an office environment or a server that will sit outside a server room.
Choose a 1U server such as the R640 when rack space is limited and the goal is more compute nodes. Choose 2U if you prefer more internal volume and better expansion.
Buying a refurbished enterprise server makes the most sense when the machine has been checked, configured and prepared for real business use. In that case, used servers become refurbished servers that can be a practical, predictable and professional alternative to new budget systems or much more expensive new enterprise configurations.
Is the R640 suitable for virtualization?
Yes. That is one of its most natural use cases, especially when compute density in 1U matters.
Can it be used as a storage server?
It can include local storage depending on configuration, but it is not a storage-first model like the R740xd.
What should I check before buying?
CPU, memory type and capacity, drive bay layout, RAID controller, power supplies, network adapters, iDRAC license and warranty.