Dell PowerEdge R640 vs R740

The Dell PowerEdge line of servers are industry favorites and among the most effective at managing data center workloads. These servers combine excellent memory capacity, superior application performance, and data security to keep your everyday business functions running smoothly.

Two new models in the PowerEdge line are the Dell R640 and the Dell R740. The PowerEdge R640 is built for performance and optimal data center density. This means that processing hefty workloads will be made easier, effectively catering to evolving business requirements.

In comparison, the Dell R740 is a supreme workload accelerator. It is optimized for application performance and storage scalability, providing the resources necessary to provide power to the most demanding business environments.

Let's look at a side-by-side comparison of the Dell R640 vs the Dell R740:

Model R640 R740
Processors Up to two Intel® Xeon® SP, up to 28 cores per processor Up to two Intel® Xeon® SP, up to 28 cores per processor
Memory 24 DDR4 DIMM slots, Supports RDIMM /LRDIMM, speeds up to 2666MT/s, 1.5TB max Up to 12 NVDIMM, 192 GB Max Supports registered ECC DDR4 DIMMs only 24 DDR4 DIMM slots, Supports RDIMM /LRDIMM, speeds up to 2666MT/s, 3TB max Up to 12 NVDIMM, 192 GB Max Supports registered ECC DDR4 DIMMs only
I/O Slots Network daughter card options 4 x 1GE or 2 x 10GE + 2 x 1GE or 4 x 10GE or 2 x 25GE Front ports: Video, 1 x USB 2.0, available USB 3.0, dedicated IDRAC Direct USB Rear ports: Video, serial, 2 x USB 3.0, dedicated iDRAC network port Video card: VGA, NVIDIA NVS310 available as PCIe card Up to 3 x Gen3 slots, all x16 Network daughter card options 4 x 1GE or 2 x 10GE + 2 x 1GE or 4 x 10GE or 2 x 25GE Front ports: Video, 2 x USB 2.0, available USB 3.0, dedicated IDRAC Direct Micro-USB Rear ports: Video, serial, 2 x USB 3.0, dedicated iDRAC network port Video card: VGA Riser options with up to 8 PCIe Gen 3 slots, maximum of 4 x 16 slots
Max. Internal Storage up to 8 NVMe SSD max 58TB or up to 4 x 3.5 SAS/SATA HDD max 40TB max 61TB or up to 8 x 3.5" SAS/SATA HDD max 80TB Optional DVD-ROM, DVD+RW
Drive Bays

Front drive bays: Up to 10 x 2.5" SAS/SATA (HDD/SSD) with up to 8 NVMe SSD max 58TB or up to 4 x 3.5 SAS/SATA HDD max 40TB

Front drive bays: Up to 16 x 2.5" SAS/SATA (HDD/SSD) max 61TB or up to 8 x 3.5" SAS/SATA HDD max 80TB Optional DVD-ROM, DVD+RW

Optimizing Application Performance

The Dell R640 is capable of providing superior application performance by using only a 1U chassis. The architecture of the server is geared towards optimum flexibility, where plenty of data storage options are left available for expansion. With the server, you can combine up to 24 DIMM's (up to 12 of which can be NVDIMM's) where each has either a 2.5inch or 3.5inch drive. All this capacity is housed within a compact 1U chassis, providing superior performance in a compact and flexible design.

The server also comes equipped with an Intel Xeon SP processor, which provides an increase of 27% in processing cores and a 50% increase in bandwidth.
The Dell R740 is the next level in performance capabilities within a 2U chassis. Its workload acceleration is propelled by the scalable GPUs and drives that it contains. The R740 is capable of scaling up to three 300GPU's or six 150W GPUs.

Automation of core functions

On the R640 servers, the Dell OpenManage platform makes it possible for this line of servers to automate routine and everyday tasks. It combines intelligent processing, agent-free management, and sync capabilities to offer flexible control from multiple devices. In addition, the server comes equipped with the new OpenManage Enterprise control that offers customized reporting.

The PowerEdge R740 also comes equipped with the Dell OpenManage portfolio. On this server, the automation capabilities of OpenManage end up freeing plenty of space and time for other more tasking projects on the server.

Ability to maintain data security

The Dell PowerEdge servers are built with security at the core of their life cycle. The Dell R640 is able to leverage key security features that enhance protection and the delivery of accurate data to your customers. These features include an integrated secure boot along with cryptographically singed firmware packages, a server lock-down feature that prevents unauthorized or malicious changes, and a secure component supply chain that provides data protection from the factory to the data center.

Because these security standards are built into every Dell PowerEdge server, the R740 contains much the same security features as the R640. However, with the R740 being a workload powerhouse, the data safety via secure boot and the prevention of unauthorized access are even more critical.  The server is also equipped with the Quick Sync 2 feature for safe and reliable wireless management of data. Combined with advanced memory capabilities, the R740 can handle taxing workloads without the user worrying about data security.

Wrap up

When choosing between these two top-end servers, your decision may ultimately come down to balancing between performance and budget. At Source Tech, we stock both the Dell PowerEgde R640 and R740 servers. We have been specializing in servers for over 20 years and we can help you make the right choice for your business. Contact us today.

Published at: 07-12-2017
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