Solidigm D7 Series: P5520, P5620, PS1010, PS1030 and P5810 Compared, with UK Prices

Solidigm D7 Series: which drive is which

This page covers five D7 drives, documented in three Solidigm product briefs plus a separate brief for the PS1010 in E1.S. They split by PCIe generation and by endurance class.

The capacity is a quick clue to the class. In the PCIe 4.0 pair, the standard-endurance P5520 comes in the 1.92TB, 3.84TB, 7.68TB and 15.36TB steps, and the medium-endurance P5620 in 1.6TB, 3.2TB, 6.4TB and 12.8TB. So a 6.4TB D7 from that generation is a P5620, and a 7.68TB one is a P5520. The PCIe 5.0 pair repeats the split at the ends of its ranges: the PS1010 runs from 1.92TB and the PS1030 from 1.6TB.

Solidigm D7-P5520 and D7-P5620: the PCIe 4.0 pair

Solidigm describes the P5520 and P5620 as providing standard endurance and medium endurance respectively. Both are PCIe 4.0 x4 and NVMe 1.4, both use Solidigm's 144-layer third-generation 3D NAND, formerly Intel's, and both carry a five-year limited warranty. Solidigm also lists E1.S and E1.L versions of the P5520 beside U.2; the capacities given here are the U.2 ones.

These are Solidigm's own 'up to' figures. Only one performance row separates the two: random write, where the P5620 is rated at 390K IOPS against 220K, close to 1.8 times as much on our arithmetic. Sequential speed and random read are the same. So the P5620 is the one for small random writes and heavy daily rewrites, and the P5520 gives more capacity at each step for work that is mostly reads.

The Solidigm D7-P5520 3.84TB is the second of the four U.2 sizes. At up to 1 DWPD it is rated for about 3.84 TB written a day over five years, which is our arithmetic from Solidigm's rating, not a figure printed in the brief.

Solidigm D7-PS1010 and D7-PS1030: the PCIe 5.0 pair

Solidigm's PS1010 and PS1030 brief presents them as standard and mid-endurance drives, and compares them with the previous generation, the P5520 and P5620. Both come in E3.S and U.2.

Set against the PCIe 4.0 pair, the headline change is random read: up to 3.1M IOPS against the P5520's 1.1M, about 2.8 times on our arithmetic, with the endurance classes kept at 1 and 3 DWPD. The PS1010 also has its own E1.S brief, which lists 3.84TB and 7.68TB at 1.0 DWPD, in a 15 mm air-cooled version or a 9.5 mm version for cold-plate or air cooling. E1.S, E3.S and U.2 are different form factors, so the form factor in a listing matters as much as the model name; the E1.S SSD page sets out that form factor.

Solidigm D7-P5810: the SLC drive

The P5810 is the odd one out. Solidigm calls it a single-level cell (SLC) NVMe drive for extremely write-heavy workloads, and gives it one size: 800 GB, U.2 15 mm, PCIe 4.0, at 50 DWPD and 73 PB written. Those two endurance figures agree: on our arithmetic 800 GB written 50 times a day for five years is 73 PB. Power is about 10 W maximum and under 5 W idle.

Its single 800 GB size is the smallest in the D7 line covered here, so it trades capacity for write endurance: 50 DWPD against 1 or 3 for every other D7 above. If a listing names a P5810, it appears in the table below with the rest of the family.

Solidigm D7 Series price on Amazon.co.uk

The table holds 4 listings right now. Lowest price per TB in it: £755.08/TB. Prices are pounds sterling inc VAT, sorted per TB, and each row shows its condition. The table takes titles naming one of the five D7 models.

Solidigm part numbers on these listings begin SSDPF2 or SB5PH, and we have not found a Solidigm document that decodes them, so this page does not map a part number to a capacity. Match the model name and capacity in the title against the lists above, and check the form factor: D7 listings can be U.2 or E3.S. Some titles also add FIPS. We have not found a Solidigm document on FIPS versions of these drives, so ask the seller what the word means for the unit before you press Buy on Amazon.

For the connector and drive heights, the U.2 SSD page covers U.2, and the enterprise NVMe SSD page compares D7 drives with other makers' NVMe models.