PM893 1.92TB vs PM9A3 7.68TB
The PM893 1.92TB and the PM9A3 7.68TB are both enterprise SSDs we supply tested from Hong Kong, and the figures below are the same ones published on each product page. They share 1 listed specification row and separate on interface, endurance, form factor, so the decision is less about "which is better" and more about which of those differences your platform or workload can actually use.
Nothing on this page is a price: used and refurbished hardware is repriced weekly, so both are quoted on request against confirmed stock with the date the quote holds until. If you are replacing a part, send the platform and we will confirm the population before you commit.
Side by side
PM893 1.92TB vs PM9A3 7.68TB specifications
| Specification | PM893 1.92TB | PM9A3 7.68TB |
|---|---|---|
| Interface | SATA 6Gb/s (SATA III) | PCIe Gen4 x4, NVMe 1.4 |
| Endurance | 1.3 DWPD (3,504 TBW) | 1 DWPD (approx. 14,016 TBW) |
| Form Factor | 2.5-inch, 7mm, SATA | 2.5-inch U.2 (SFF-8639) |
| Sequential R/W | Up to 550 / 520 MB/s | Up to 6,800 / 4,100 MB/s |
| Random R/W (4KB) | Up to 98K / 31K IOPS | Up to 1,100K / 200K IOPS |
| NAND / Controller | Samsung 128-layer V-NAND TLC / Metis | Samsung 128-layer V-NAND TLC / Elpis |
| Security | AES 256-bit, TCG Opal, power-loss protection | AES 256-bit, TCG Opal, power-loss protection |
| Model | Samsung PM893 1.92TB (MZ7L31T9HBLT-00A07 / MZ-7L31T90) | Samsung PM9A3 7.68TB (MZQL27T6HBLA) |
Rows that differ are highlighted. Figures are the same ones published on each product page; where a figure is community-sourced rather than vendor-published it is stated on that page. Confirm every part against your build sheet when ordering.
Where they differ
- ·Interface — PM893 1.92TB: SATA 6Gb/s (SATA III); PM9A3 7.68TB: PCIe Gen4 x4, NVMe 1.4.
- ·PM893 1.92TB has the higher write endurance (1.3 vs 1); PM9A3 7.68TB trades that for something else.
- ·Form Factor — PM893 1.92TB: 2.5-inch, 7mm, SATA; PM9A3 7.68TB: 2.5-inch U.2 (SFF-8639).
- ·Sequential R/W — PM893 1.92TB: Up to 550 / 520 MB/s; PM9A3 7.68TB: Up to 6,800 / 4,100 MB/s.
- ·Random R/W (4KB) — PM893 1.92TB: Up to 98K / 31K IOPS; PM9A3 7.68TB: Up to 1,100K / 200K IOPS.
- ·NAND / Controller — PM893 1.92TB: Samsung 128-layer V-NAND TLC / Metis; PM9A3 7.68TB: Samsung 128-layer V-NAND TLC / Elpis.
What they share
Security: AES 256-bit, TCG Opal, power-loss protection.
Decision
Which one to buy
For enterprise SSDs the decision is interface and endurance before capacity. A PCIe/NVMe drive removes the SAS/SATA controller bottleneck and is the right choice for latency-bound databases and tiering; a SATA drive is cheaper per terabyte and plenty for sequential backup, logging and capacity tiers. Endurance (DWPD) tells you whether the drive is built for write-heavy work or read-mostly storage — buying a read-optimised drive for a write-heavy job is how arrays get replaced early. Capacity follows once interface and endurance match the workload.
Choose the PM893 1.92TB if
- ·Interface: SATA 6Gb/s (SATA III)
- ·You need more write endurance — the PM893 1.92TB lists 1.3 DWPD (3,504 TBW) against 1 DWPD (approx. 14,016 TBW) on the PM9A3 7.68TB.
- ·Form Factor: 2.5-inch, 7mm, SATA
Choose the PM9A3 7.68TB if
- ·Interface: PCIe Gen4 x4, NVMe 1.4
- ·Form Factor: 2.5-inch U.2 (SFF-8639)
- ·Random R/W (4KB): Up to 1,100K / 200K IOPS
Photos
What the two look like
PM893 1.92TB
Photo from the PM893 1.92TB page. Every unit's label is read against your order before dispatch.
PM9A3 7.68TB
Photo from the PM9A3 7.68TB page. Every unit's label is read against your order before dispatch.
Frequently asked questions
How much do the PM893 1.92TB and the PM9A3 7.68TB cost?
We do not publish prices for either: secondary-market hardware is repriced weekly. Send the quantity, the platform and the condition you want and we quote both against confirmed stock, with the date the figure holds until.
What is the main difference between the PM893 1.92TB and the PM9A3 7.68TB?
Interface (PM893 1.92TB: SATA 6Gb/s (SATA III); PM9A3 7.68TB: PCIe Gen4 x4, NVMe 1.4); Endurance (PM893 1.92TB: 1.3 DWPD (3,504 TBW); PM9A3 7.68TB: 1 DWPD (approx. 14,016 TBW)); Form Factor (PM893 1.92TB: 2.5-inch, 7mm, SATA; PM9A3 7.68TB: 2.5-inch U.2 (SFF-8639)).
Can I use the PM893 1.92TB and the PM9A3 7.68TB in the same system?
Yes — both are 2.5-inch-class drives, so they can live in the same server as long as your bays and controller support the interfaces (SATA 6Gb/s (SATA III) vs PCIe Gen4 x4, NVMe 1.4). Mixed capacities are normal in an array; mixed models in one RAID group is a controller-policy decision.
Which one should I buy?
Buy the one whose strong points match the job: see the "Choose" section above. If you are replacing an existing part, send the platform or the old part number and we will confirm compatibility before you order.
What condition are they in, and do you ship worldwide?
Both are supplied tested with a 1-year written warranty. Condition is stated line by line before you order — new, decommissioned pull or OEM tray — and we ship worldwide from the Hong Kong warehouse with full export documentation, typically 3–7 days by air.
Get a quote for either — or both
Tell us the quantity, the platform and the condition you need. We confirm stock and put a firm figure in writing with the date it holds until.
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