3.84 TB SSD: SATA, SAS and NVMe Part Numbers, Endurance and Watts

3.84 TB SSD price on Amazon.co.uk

The table lists any 3.84 TB enterprise SSD offers we track on Amazon.co.uk, lowest £/TB first. It holds 10 listings right now. Lowest £/TB among tracked offers at the last check: £136.46/TB. All prices are pounds sterling inc VAT.

SATA, SAS and NVMe rows can share this table, and it has no form-factor column. A low £/TB on a SATA row tells you nothing about a U.2 bay, so read the Interface and Part number columns before the price, then match that number against the sections below. Each row shows its condition. A row can also name a model this page holds no sheet for: treat that title as the seller's wording until you have the maker's document. The wider class choice is on enterprise SSD.

3.84 TB enterprise SSD part numbers and watts by form factor

These are the numbers the maker documents give at exactly this capacity. Samsung's PM9A3 data sheet covers the U.2 only, so its M.2 and E1.S rows carry no part number. Micron's 7450 sheet offers a chart of codes rather than a list of parts.

The spread on power is large. Samsung's SATA PM893 prints 2.2 W read and 3.2 W write here, whereas its U.2 PM9A3 prints 11.0 W and 13.5 W. Yet the two carry the same 7,008 TB on their warranty TBW rows. The PM9A3 sheet also says its five-year limited warranty covers the stated period or the TBW, whichever comes first, so on that sheet the figure is a warranty limit as well as an endurance number.

Within the PM9A3 U.2 range, 3.84 TB has two small distinctions on the data sheet: the highest sequential read, 6,900 MB/s, and the highest sequential write, 4,100 MB/s against 4,000 MB/s at 7.68 TB. Random write there is 180 KIOPS and idle is 3.5 W.

3.84 TB SSD NVMe on M.2: the top M.2 step in the PM9A3 and 7450 documents

Samsung's PM9A3 white paper says the M.2 version offers up to 3.84 TB, and its form-factor table gives M.2 a maximum of 4 TB. Micron's 7450 PRO stops at the same place: 3,840 GB on M.2 22110, with the shorter M.2 2280 listed only at 480 GB and 960 GB. In both makers' documents, then, a 3.84 TB M.2 is the long one. Samsung's brief prints it at 22 x 110 x 4 mm.

The 7450 PRO shows what the long M.2 gives up against E1.S at the same capacity and the same rated writes.

M.2 draws less and moves less. Neither column says a drive suits your machine. Whether you have a 110 mm M.2 slot or an E1.S bay is a question for your server's own documents, and Micron's sheet alone lists E1.S at three heights: 5.9 mm, 15 mm and 25 mm.

3.84 TB SSD SATA options: read intensive or mixed use

Five SATA lines reach 3.84 TB in the documents we read. Micron's sheet gives the interface as SATA 6 Gb/s, and its 5400 BOOT line has no 3,840 GB entry. The D3-S4520 and D3-S4620 come from an Intel brief hosted by Solidigm.

The brief for the D3-S4520 and D3-S4620 speaks of 'read-intensive and mixed-use workloads' for the pair without assigning either word to a model, and we have not found either label for the PM893 or 5400 in the data sheet or specification we read. So we sort by rating rather than apply the words ourselves. Micron's 7450 and KIOXIA's CM7 sheets use read intensive for 1 DWPD and mixed use for 3 DWPD. By rating, the PM893 and 5400 PRO sit near the first and the 5400 MAX and D3-S4620 near the second. Our arithmetic is TBW divided by capacity and 1,825 days, which assumes five years.

This is where SATA departs from NVMe. The higher-endurance drive keeps the 3.84 TB label: Micron's 5400 MAX table runs to 3,840 GB, whereas the NVMe 7450 MAX has 3,200 GB in the matching position. The 5400 MAX is rated at 24,528 TB against 8,410 TB for the 5400 PRO, nearly three times as much at the same size. A 3.84 TB SATA label therefore does not tell you the class. The whole part number and the maker's sheet do.

3.84 TB or 3.2 TB on NVMe: read-intensive and mixed-use pairs

On NVMe the same step changes its label. Micron's brief prints the 7450 PRO as read-intensive at 1 drive write per day and the 7450 MAX as mixed-use at 3, with 3.84 TB opposite 3.2 TB. KIOXIA's CM7 family lines up the same way.

So the 3.2 TB Micron takes 2.4 times the rated writes, by our arithmetic, on 17% less labelled capacity, also by our arithmetic. We have not found a document stating that these pairs share NAND. The pairing here is by capacity and endurance class as printed, nothing more.

3.84 TB SSD SAS: the 12 Gbps PM1643 and KIOXIA's PM7-R

Samsung's PM1643 brochure lists 3.84 TB on 12 Gbps SAS, with 1 DWPD for five years and 13.5 W active and 5 W idle as family figures. We hold no part number for it. KIOXIA's PM7-R brief gives base model KPM71RUG3T84 under a Read Intensive label, with 1 DWPD and a 5-year limited warranty. It describes a '24G SAS interface with single/dual-port support' and prints its interface speed as 22.5 Gbit/s, 12.0 Gbit/s, 6.0 Gbit/s, 3.0 Gbit/s, 1.5 Gbit/s.

We have read only the PM1643 brochure, not a PM1643a sheet, so a PM1643a title in the table is one we cannot back with a document. Which SAS speed your controller or backplane runs is for its own documents to say.

Other 3.84 TB enterprise NVMe drives in the documents we read

• KIOXIA CM7-R: PCIe 5.0, 2.5-inch, 15 mm and U.3 conformant. In single-port mode its brief gives up to 14,000 MB/s read, 6,750 MB/s write, and 2,700K and 310K IOPS random read and write at 3,840 GB. Security variants at this size are KCMYXRUG3T84 (SIE), KCMYDRUG3T84 (SED) and KCMYFRUG3T84 (FIPS SED).
• Samsung PM1743: the white paper's Gen4 table shows the 2.5-inch, 15 mm drive at 6,000 sequential write and 280 KIOPS random write, with 1 DWPD printed for the table. The table labels that sequential figure Mbps and the chart beside it MB/s. We hold no part number.
• Solidigm D5-P5430: the maker's page describes a QLC SSD and lists 3.84 TB. We have not found a document tying an endurance figure to this capacity.
• Micron 9400: The PRO starts at 7,680 GB and the MAX at 6,400 GB. Neither has 3.84 TB. The PRO's first step is on 7.68 TB SSDs.