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Intel has revealed the first details of its upcoming P5801X SSD. This is a modified version of the existing P5800X, but slightly faster and in E1.S format. Additionally, the company is coming out with the D7-P5510 in the same form factor.

The P5801X was revealed during a presentation by Intel at the Open Compute Project. Official details about the SSD have not yet been revealed, but Blocks and Files is able to list the main features of the SSD. It is said to be based on the existing P5800X SSD but has been modified to fit an E1.S format, as opposed to the U.2 format of the P5800X. E1.S is also known as short ruler or gumstick. The latter name is also often used for M.2 SSDs.

Fastest SSD in the world

The SSD comes in capacities of 400 and 800GB and is, according to Intel, the fastest SSD in the world. Unlike its U.2 brother, the P5801X does not have 1.6 and 3.2TB variants, presumably due to lack of space on the smaller form factor. However, the IOPS performance has been slightly improved, as well as the read and write speeds.


While the P5801X is an E1.S counterpart to the P5800X, the D7-P5520 is that to the D7-P5510. More details than the D7-P5520’s model number and form factor are not known, but the specifications are likely to be similar to the existing U.2-counterpart. The D7-P5510 is a 2.5″ SSD with a PCIe 4.0 interface and 144 layers of 3D-stacked TLC memory. Furthermore, it achieves 930,000 and 190,000 IOPS in read and write, and 7 and 4.2GB/s transfer speeds respectively.

Official announcement to come

Further details about the new SSDs ar not known until Intel makes its official announcement. What is known, is that the first samples of the SSDs can be expected this year. For the P5801X, this will be in the third quarter, to be a bit more precise.

E1.L and E1.S

Intel has announced the ruler format for server SSDs in 2017. The format was devised to easily fit SSDs into a 1U enclosure. The form factor comes in different flavours. E1.L is a large format that plugs deep into the server, while E1.S is about the same height and width, but a lot shorter.

Tip: Intel announces its fastest Optane SSD yet