Samsung SSD PCIe 3.0 x4 NVMe M.2 2230
Überblick
The 30-Second Version
The PM991a is the right drive for the wrong price. It fits where others can't, but you'll pay a premium for mediocre write speeds and bottom-tier endurance.
Pros & Cons
Vorteile
- Fits the Steam Deck and Surface without adapters 84th
- Strong random performance for snappy everyday use 77th
- 1TB capacity in the tiny 2230 form factor
- Samsung reliability and 4.6-star customer rating
Nachteile
- Write speeds are mediocre at 1400 MB/s
- Endurance is one of the worst we've seen
- Expensive for PCIe 3.0 performance
- No real upgrade path for heavy workloads
Was Besitzer sagen
The Word on the Street
Die Fakten
Performance
Sequential reads hit 3100 MB/s, which is about as good as PCIe 3.0 gets, but the 1400 MB/s write speed is a letdown. Random performance is actually the bright spot, landing in the 84th percentile, so everyday tasks and game loads feel snappier than the sequential numbers suggest. Endurance is the ugly part, sitting near the bottom of the barrel at the 15th percentile. This is not a drive for heavy write workloads.
Specifications
Full Specifications
Drive
| Capacity | 1000 |
| Form Factor | M.2 2230 |
| Interface | PCIe 3.0 x4 |
| Protocol | NVMe |
| PCIe Generation | 3 |
| External | No |
Performance
| Sequential Read (MB/s) | 3100 |
| Sequential Write (MB/s) | 1400 |
| Random Read (IOPS) | 380000 |
| Random Write (IOPS) | 330000 |
Hardware
| NAND | TLC |
vs Competition
The WD_BLACK SN850P and SanDisk SN850X both blow the PM991a away on sequential speed, but they're 2280 drives that won't fit in a Steam Deck without surgery. The Crucial T710 and Kingston Fury Renegade are in a different league entirely for performance. The PM991a's real competition is other 2230 drives, and among those, it holds its own on random performance but falls behind on endurance and price.
| Spec | Samsung SSD | Kingston FURY Renegade SFYRDK/4000G | Western Digital WD_BLACK SN850P | Crucial T710 | SanDisk Black SN850X WDBB9G0040BNC-WRSN | Lexar NM1090 PRO LNM109P004T-RNNNU |
|---|---|---|---|---|---|---|
| Capacity | 1TB | 4TB | 4TB | 4TB | 4TB | 4TB |
| Form Factor | M.2 2230 | M.2 2280 | M.2 2280 | M.2 2280 | M.2 | M.2 2280 |
| Interface | PCIe 3.0 x4 | PCIe 4.0 x4 | PCIe 4.0 x4 | PCIe 5.0 x4 | PCIe 4.0 x4 | PCIe 5.0 x4 |
| Seq Read | 3,100 MB/s | 7,300 MB/s | 7,300 MB/s | 14,500 MB/s | 7,300 MB/s | 14,000 MB/s |
| Nand Type | TLC | TLC | - | TLC | TLC | SLC |
| Dram Cache | - | true | true | false | true | true |
| Endurance | - | 4000 TBW | 2400 TBW | 2400 TBW | 2400 TBW | 2800 TBW |
| Compare | Compare | Compare | Compare | Compare |
| Produkt | Speed | Random | Feature | Capacity | Endurance | Nutzerresonanz | Affordability |
|---|---|---|---|---|---|---|---|
| Samsung SSD | 56.2 | 84 | 53.5 | 55.4 | 14.8 | 77.4 | 35.2 |
| Kingston FURY Renegade SFYRDK/4000G Compare | 93.3 | 94.4 | 93.9 | 92.6 | 94.1 | 95.3 | 9.3 |
| Western Digital WD_BLACK SN850P Compare | 89 | 95.8 | 84.6 | 92.6 | 88.1 | 99.6 | 7 |
| Crucial T710 Compare | 99.1 | 99.2 | 85.7 | 92.6 | 86 | 77.4 | 10.9 |
| SanDisk Black SN850X WDBB9G0040BNC-WRSN Compare | 89 | 95.8 | 89.4 | 92.6 | 88.1 | 95.3 | 9.6 |
| Lexar NM1090 PRO LNM109P004T-RNNNU Compare | 98.2 | 98.5 | 97.4 | 92.6 | 75 | 56.9 | 8.7 |
Preis
Value & Pricing
At around $249 USD, this is a tough sell on paper. You're paying Gen4 money for Gen3 speeds because the 2230 form factor commands a premium. If you need the size, it's worth it. If you don't, you can get a faster 2280 drive for less.
Amazon 1 Angebot Ab 48.894 ₹
Wir verfolgen die Preise für dieses Produkt seit dem 13. Nov. 2026. Das Diagramm erscheint, sobald mehr Daten vorliegen.
Mehr erfahren
Overview
The Samsung PM991a is the drive you buy when nothing else fits. It's a 1TB M.2 2230 stick that slots into the Steam Deck, Surface tablets, and a handful of ultrabooks that demand the tiny form factor. The headline numbers are 3100 MB/s read and 1400 MB/s write, which is fine for PCIe 3.0 but nothing to brag about in a world of 7000 MB/s Gen4 drives. What you're really paying for here is compatibility, not raw speed.
Common Questions
Q: Will this work in my Steam Deck?
Yes, it's a drop-in replacement. The 2230 form factor is exactly what the Steam Deck uses, and 1TB gives you plenty of room for a big game library.
Q: Is this drive fast enough for gaming?
For loading games and everyday use, absolutely. The random read performance is strong, which matters more than sequential speed for most games. Just don't expect it to match Gen4 drives in large file transfers.
Q: Can I use this in a regular desktop PC?
Technically yes with an adapter, but that's a waste of money. If you have a standard M.2 2280 slot, buy a 2280 drive instead. You'll get better performance for less cash.
Who Should Skip This
If you're building a desktop or have a laptop with a standard 2280 slot, skip this entirely. You'll get faster drives with better endurance for less money. This is a specialty product for Steam Deck, Surface, and other 2230-only devices, and that's the only reason to pay the premium.
Verdict
Buy the PM991a if you specifically need a 1TB 2230 drive for a Steam Deck or Surface. It's a solid performer for gaming and everyday use, and Samsung's reliability track record is worth something. Just don't expect it to be a speed demon or a write-heavy workhorse.
Usage Scores
- Gesamt59
- Budget73.5
- Gaming61.6
- Laptop66.5
- Console30.8
- Portable15.5
- Workstation54.7
