Samsung PM1743: PCIe 5.0 Speed, Gen4 Figures by Capacity and What We Have Not Found

Samsung PM1743 PCIe 5.0: the headline figures

Samsung's PM1743 white paper, copyright 2024, is the main maker document we have found for this drive. It gives four headline figures for PCIe 5.0. They are 'up to' numbers for the range, not figures for a particular capacity.

Samsung credits a controller that supports 16 channels and a fifth-generation interface that it says doubles the transfer speed of the previous generation. It puts reads at 1.9x and 1.7x the speed of products designed for fourth-generation PCIe, and writes at 1.7x and 2.1x the previous generation. Those are Samsung's comparisons, and this page has no test of them.

Reads are where PCIe 5.0 shows. Samsung's Gen4 table below lists 7,500 for sequential read against the 14,000 MB/s headline, about 1.9 times on our arithmetic. Top-capacity sequential write barely moves: 7,000 in that table against the 7,100 MB/s headline. Samsung says write performance on fifth-generation interfaces stays at the maximum limit of NAND capability achieved on fourth-generation ones, and places the marked improvements in read performance and latency.

The paper also has a per-capacity PCIe 5.0 chart. We could not match its figures to individual capacities reliably, so we do not print them. Treat the headlines as ceilings: the Gen4 table shows how far a smaller model can sit below its largest sibling.

Samsung PM1743 specs by capacity in PCIe Gen4 mode

This is the one per-capacity table we hold. Samsung heads it Gen4 Performances, for a PCIe Gen4 interface and a 2.5-inch drive 15 mm thick, so it describes a PM1743 running on a Gen4 host. Samsung says the drive is backwards compatible, which is why these figures matter if your server is not PCIe 5.0.

Samsung's table labels the two sequential rows Mbps. The same paper labels its sequential charts MB/s and quotes MB/s in its text, so we read them as MB/s. That is our reading and not a correction from Samsung.

Sequential read is level at 7,500 across all four sizes. Writes and random reads are not: the 1.92TB model lists half the sequential write of the 3.84TB, 3,000 against 6,000, and 1,000 against 1,700 KIOPS on random read. So the smallest PM1743 is not the same speed in a smaller size.

As we read the white paper's table, the endurance and reliability rows are single cells, 1 DWPD and 2.5M hours MTBF, printed once across the PM1743, PM1733a and PM1733 columns. DWPD stands for drive writes per day. Kioxia, a different maker, defines one full drive write per day as the drive being written and rewritten to full capacity once a day for the specified lifetime. On our arithmetic 1 DWPD at 15.36TB is 15.36 TB of writes a day. We have not found a Samsung document giving a warranty period or a TBW figure for the PM1743, so we cannot turn that into a lifetime total.

Samsung PM1743 vs PM1733a and PM9A3 on PCIe Gen4

The same Samsung table carries the PM1733a at the same four capacities, which makes it the cleanest comparison we can print.

One line goes the other way. At 1.92TB the PM1733a lists 1,400 KIOPS of random read against the PM1743's 1,000, the only cell in Samsung's table where the PM1733a leads. From 3.84TB upwards the PM1743 leads on every row except sequential read, where the two tie at 7,500.

Samsung calls the PM9A3 the PM1743's predecessor and says the newer drive performs better across fourth-generation interfaces. The PM9A3 data sheet lets us set the 7.68TB models side by side, with two caveats: the documents describe different test set-ups, so this is not a bench result, and the PM1743's sequential units follow our MB/s reading above.

Thickness is the line to check first. A bay built around a 7 mm PM9A3 may not take a 15 mm drive, so confirm the height your server accepts before treating one as a step up from the other.

Samsung PM1743 datasheet: what we hold and what we have not found

We have not found a Samsung data sheet or product brief for the PM1743. We have the white paper and Samsung's product page, checked 5 November 2026, and that decides what this page can print. For each item below, ask the seller for the maker's document covering the exact part number before you rely on it.

• Part numbers: we have not found a Samsung document stating them per capacity or form factor. A part number in a listing title is the seller's wording.
• Power-loss protection: we have not found a Samsung document stating this for the PM1743. The paper's telemetry list names capacitor health, but that is not a statement of protection. Samsung's description of PLP on the PM9A3 page is about that drive and makes no claim for this one.
• Wattage: we have not found a Samsung document stating this. The paper's 48% gain in efficiency over previous generations comes with no watt figure.
• Warranty: we have not found a Samsung document stating this.
• PCIe 5.0 figures per capacity: we could not read the white paper's chart reliably, as noted above.

Samsung PM1743 SSD beyond speed: dual port and telemetry

• Dual-port operation: Samsung calls the PM1743 the first 16-channel SSD to support it, and says it expands availability in the event of a failure.
• Early warning: through the dual ports, data centres can be notified about issues before they have a discernible effect on customers.
• Enhanced telemetry: the drive collects and transmits data in an encrypted format, including lifetime writes, capacitor health and workload over time.
• Quicker resolution: a two-step process, first running the SSD Toolkit, then sending debug information back to Samsung.

Samsung also says the drive is designed to Open Compute Project specifications, and names its target uses as high-end computing servers, compute servers from edge to cloud, and mixed workload services made up of application and file servers. These are the maker's descriptions. This page has no test of any of them.

Samsung PM1743 U.2, U.3 or E3.S: the form factors explained

Samsung's paper says the drive dynamically supports both conventional 2.5-inch form factors, U.2 and U.3, and is also available in an EDSFF form factor model. It separately expects E3.S to become more popular, without naming that model as E3.S. The explicit statement is on Samsung's product page, checked 5 November 2026: 'PM1743 supports both 2.5-inch and E3.S form factors'. The Gen4 table above covers the 2.5-inch drive only, and we have not found per-capacity figures for E3.S. On capacity, the same page, under the heading 'Scalable Capacity in a Slim Form Factor', puts 'category-leading capacity of 15.36TB' in the same sentence as EDSFF E3.S. It gives no capacity list and does not say 15.36TB is E3.S only. We have seen only that phrase, not the full sentence, so read the page itself before relying on it.

As for the names, SNIA's 2022 slides describe the 2.5-inch device evolving into PCI Express U.2. Quarch Technology, in a 2019 article, describes U.3 as a tri-mode standard that builds on the U.2 specification and uses the same SFF-8639 connector. It says U.3 drives are backward compatible with U.2, and that U.2 drives are not compatible with U.3 hosts. That is a general statement about the two standards, not about this drive, so check your own backplane. The U.3 SSD page goes further into the standard.

SNIA's 2022 slides give the E3.S module as 76 mm x 112.75 mm x 7.5 mm, half the thickness of Samsung's 15 mm 2.5-inch drive, and place E3.S at up to 25 W. That is a ceiling for the form factor, not a PM1743 figure. The slides say the E3 family rebuilt the concept of PCI Express U.2 from the ground up, and a 2024 SNIA presentation calls E3.S the mainstream enterprise server form factor, supporting 1U and 2U with a higher drive count than U.2.

Samsung expects E3.S to become more popular in next-generation enterprise servers and says EDSFF SSDs let customers provide twice as much storage on a single rack unit as the traditional 2.5-inch form factor.

So the form factor is a question for your chassis, not a preference. A U.2 or U.3 bay and an E3.S bay are different hardware, and we hold no list of servers for this drive. Check the form factor, the interface and the drive height against your server's own documents.

Samsung PM1743 15TB: the 15.36TB model and the word 16-terabyte

A search for a PM1743 15TB most likely means the top capacity, on our reading. Samsung's product page states 15.36TB and the Gen4 table stops there. The paper also writes 'The 16-terabyte PM1743' in its text and '16TB' in a heading, 'PM1743 Gen5 16TB performance metrics', while its capacity table stops at 15.36TB. We read those as the same 15.36TB drive, since no 16TB row appears anywhere in what we hold, but that is our reading. On Gen4 the 15.36TB lists 7,000 sequential write and 360 KIOPS random write. A listing that says 16TB needs its part number confirmed.

Samsung PM1743 price on Amazon.co.uk

When the table holds rows, "Prices checked" at the top of the page gives the time of reading. Prices are pounds sterling inc VAT, sorted per TB, and each row shows its condition. The table holds no listings right now. That includes no listings in new condition.

The filter takes titles that name PM1743. A listing that gives only a part number would not appear, and we hold no Samsung list of part numbers to match one against. Check any title against the capacity and form factor you need, and press Buy on Amazon only once the seller has confirmed the part number. For the choice of interface before the model, enterprise SSD covers SATA, SAS and NVMe.

In-stock alternatives

None of these is the product this page covers: they are what is in stock on Amazon.co.uk beside it right now. Each row says why it is listed. Check the interface, form factor and part number against your system before buying.