Dell Class 40 vs Dell Class 50: Difference and Comparison

A solid-state drive (SSD) is a form of strong storing device that uses electronic circuit components to store information indefinitely, using flash memory and functioning as secondary storage in the computer storage hierarchy.

SSD technology is rapidly evolving. The two most popular SSD drives are the Dell class 40 and Dell class 50.

Key Takeaways

  1. Dell Class 40 solid-state drives (SSDs) are designed for read-intensive workloads, while Class 50 SSDs cater to mixed-use workloads.
  2. Class 50 SSDs have a higher endurance rating and can handle more data writes than Class 40 SSDs.
  3. Dell Class 50 SSDs offer better performance and longevity than Class 40 SSDs but come at a higher price.

Dell Class 40 vs Dell Class 50

Dell Class 40 is a high-quality office building with advanced amenities and finishes located in desirable areas and owned by institutional investors or large real estate firms. Dell Class 50 is a lower-quality office building with outdated HVAC systems and infrastructure.

Dell Class 40 vs Dell Class 50
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Dell Class 40 stores many various models available, leading to performance fluctuation as newer generations replace previous generations.

Dell class 40 is a PCIe standard SSD. It is mostly made up of TLC-based SSDs. In addition, there are a large number of various SSD models available in this class.

The performance of the Dell class 40 varies according to the model.

Dell Class 50 are the most powerful SSDs available on Precision workstations. They provide considerable performance improvements over Class 40.

Many are based on MLC memory, while others use newer, quicker technologies like 3D Xpoint. When it comes to performance, the given drive model must fulfil or surpass 8 out of 11 conditions.

Comparison Table

Parameters of ComparisonDell Class 40Dell Class 50
Storage capacityIt has a storage capacity of up to 512GBIt has a storage capacity of up to 1TB
InterfaceEquipped with PCIe NVMe interfaceBest in class PCIe
Sequential readDell class 40 has a sequential read up to 1500/350K   Dell class 50 has a sequential read up to 2100/1200K
Random read/writeDell class 40 a random read/write of up to 200K/80K Dell class 50 a random read/write of up to 300K/100K
AffordabilityIt is comparatively cheaper making it affordable.It is more expensive.

What is Dell Class 40?

Class 40 SSDs are standard NVMe devices with TLC flash.

In Class 40, there are a large number of various models available, which leads to performance fluctuation as newer generations replace previous generations. 

Class 40 SSDs have several NAND modules. Having numerous NAND drives speeds up the SSD (via parallelism). DRAM (1/10th the size of the SSD) is also available.

There might potentially be differences in NAND quality (MLC of the cheaper TLC or QLC), however, almost everyone currently uses either TLC or QLC.

Class 40 is best suited to PCIe SSDs up to 15x quicker than HDDs and mainstream volume PCIe offerings.

Various companies manufacture SSD drives, but Dell class 40 SSDs deliver superior system performance, up to 23% faster than 5400 rpm drives, as well as enhanced durability and dependability that traditional hard drives cannot match.

SSDs are nearly quiet and produce less heat, resulting in a better mobile experience.

Write Intensive (WI) workloads are 50/50 read/write workloads with the greatest endurance. This is commonly used for HPC, database logging, and cache workloads.

Workloads of 70/30 read/write with modest endurance. This is suggested for e-mail/messaging, OLTP, and e-commerce workloads.

Intensive Reading (RI)Workloads of 90/10 read/write with reduced endurance. This is commonly used for database warehousing, media streaming, and VOD workloads.

What is Dell Class 50?

Class 50 is outfitted with PCIe SSDs that are up to 21x quicker than HDDs. With a 1TB Solid State Drive from Dell, you can expand the storage capacity of your DellTM System.

It has a storage capacity of up to 1TB, which allows users to store massive amounts of data.

When it comes to performance, the given drive model (at a specific capacity point) must fulfil or surpass 8 out of 11 conditions in order to be designated as the top-performing SSD, independent of device connection.

Dell class 50 drives are the fastest SSDs available on Precision workstations. They provide considerable performance improvements beyond Class 40.

Most are predicated on MLC memory, while others use newer, quicker technologies like 3D Xpoint.

The drive was discovered to be rather fast, and many people thought it might compete with the Samsung SSD 950 Pro series.

It features a sequential read/write capacity of 2100/1200K and a random read/write capacity of 300K/100K.

Despite the fact that Dell class 50 SSDs lack the actual spinning discs and moveable read-write heads seen in hard disc drives (HDDs) and floppy discs.

They are rapidly evolving. The majority of the performance measures used on spinning media disc drives are likewise employed on them.

Main Differences Between Dell Class 40 and Dell Class 50

  1. Dell Class 40 has a storage capacity of up to 512GB, which allows users to store massive amounts of data. Whereas, with a 1TB Solid State Drive from Dell class 50, you can expand the storage capacity of your DellTM System.
  2. In terms of interface, Dell class 40 is equipped with a PCIe NVMe interface, which delivers a high data transfer rate, while Dell class 50 is best in class PCIe (precision only
  3. Dell class 40’s sequential read/write capacity is up to 1500/350K, while Dell class 50 sequential read allows up to 2100/1200K
  4. When speaking of random read/ write of Dell class 40, it is 200K/80K. Meanwhile, for Dell class 50, it is 300K/100K.
  5. Dell class 40 is comparatively cheaper, making it easily affordable, whereas Dell class 50 is on the expensive side.
References
  1. https://www.bairunyy.com/download/SAMSUNG/Semiconductor/Green_SSD_Case_Study3_Dell_1.pdf
  2. https://etd.adm.unipi.it/t/etd-02012021-170509/

Last Updated : 11 June, 2023

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