Western Digital WD Blue 250GB PCIe 3.0 x4 NVMe M.2 2280
The 250GB WD Blue SN550 delivers 2400 MB/s reads and 2600 MB/s writes over PCIe 3.0 x4, roughly four times faster than SATA, with a DRAM-less TLC design that keeps costs down. Its 150 TBW endurance and 1.7 million hour MTBF, plus the WD SSD dashboard for health monitoring, make it a reliable daily driver. Best for budget-conscious laptop builders or upgraders who need a fast boot drive for everyday tasks without paying a premium.
لمحة سريعة
The 30-Second Version
A solid budget boot drive that's showing its age. Fine for light use, but the small capacity and cache slowdowns mean it's not the deal it used to be.
Pros & Cons
الإيجابيات
- Easy install, even for beginners 87th
- Great value for a boot drive 77th
- Solid random read performance for a DRAM-less drive 71st
- WD's dashboard software is actually useful
السلبيات
- 250GB capacity is tiny by today's standards
- Performance tanks when the cache fills
- One reviewer had it die after six months
- No DRAM cache means it's not ideal for heavy workloads
آراء المالكين
The Word on the Street
كيف تغيّر رأي المالكين بمرور الوقت
حصرياستنادًا إلى وقت كتابة العملاء لتقييماتهم فعليًا - لترى ما إذا كان الثناء المبكر قد استمر.
استنادًا إلى 8 مراجعة عملاء مؤرخة، مجمّعة حسب الربع التقويمي. تحليل الفترات باللغة الإنجليزية.
الأدلة
Performance
The 2400 MB/s read and 2600 MB/s write speeds are fine for a PCIe 3.0 drive, but they're middle of the pack these days. What surprised us is the random read performance, which is actually pretty strong for a DRAM-less design. The catch is the cache. When it fills up, speeds drop hard because WD used cheaper NAND. For everyday tasks you won't notice, but big file transfers will expose it.
Specifications
Full Specifications
Drive
| Capacity | 250 |
| Form Factor | M.2 2280 |
| Interface | PCIe 3.0 x4 |
| Protocol | NVMe |
| PCIe Generation | 3 |
| External | No |
Performance
| Sequential Read (MB/s) | 2400 |
| Sequential Write (MB/s) | 950 |
| Random Read (IOPS) | 170000 |
| Random Write (IOPS) | 135000 |
Hardware
| NAND | TLC |
| DRAM Cache | No |
Reliability
| Endurance (TBW) | 150 |
| MTBF (hours) | 1700000 |
vs Competition
Against the Samsung 990 PRO or Crucial T500, the SN550 gets smoked. Those are PCIe 4.0 drives with DRAM caches and much higher endurance. But they also cost way more. The real comparison is against other budget drives like the Lexar NM790, which offers better capacity for the money. If you need speed, skip this and get the 990 PRO. If you need cheap storage, the SN550 is fine but the 250GB capacity is a real limitation.
| Spec | Western Digital WD Blue | Crucial T500 | Samsung 990 PRO | MSI SPATIUM M480 PRO | Corsair MP700 Elite | Lexar NM790 |
|---|---|---|---|---|---|---|
| Capacity | 250GB | 1TB | 1TB | 1TB | 1TB | 1TB |
| Form Factor | M.2 2280 | M.2 2280 | M.2 2280 | M.2 2280 | M.2 2280 | M.2 2280 |
| Interface | PCIe 3.0 x4 | PCIe 4.0 x4 | PCIe 4.0 x4 | PCIe 4.0 x4 | PCIe 5.0 x4 | PCIe 4.0 x4 |
| Seq Read | 2,400 MB/s | 7,300 MB/s | 7,450 MB/s | 7,400 MB/s | 10,000 MB/s | 7,400 MB/s |
| Nand Type | TLC | TLC | TLC | TLC | TLC | TLC |
| Dram Cache | false | true | true | true | false | false |
| Endurance | 150 TBW | 600 TBW | 600 TBW | 3000 TBW | 600 TBW | 1000 TBW |
| Compare | Compare | Compare | Compare | Compare |
| المنتج | Speed | Random | Feature | Capacity | User Sentiment | Endurance | التقييم الاجتماعي |
|---|---|---|---|---|---|---|---|
| Western Digital WD Blue | 46.3 | 77.3 | 53.3 | 12.5 | 28.2 | 70.6 | 86.8 |
| Crucial T500 Compare | 90.9 | 96.3 | 98.9 | 54.9 | 94.5 | 82.7 | 95.2 |
| Samsung 990 PRO Compare | 93.4 | 97 | 98.9 | 54.9 | 0 | 85.8 | 99.6 |
| MSI SPATIUM M480 PRO Compare | 93.8 | 80.7 | 93.5 | 54.9 | 78.4 | 98.7 | 95.2 |
| Corsair MP700 Elite Compare | 94.9 | 96.6 | 85.6 | 54.9 | 78.4 | 87.2 | 95.2 |
| Lexar NM790 Compare | 89.2 | 92.8 | 53.3 | 54.9 | 0 | 93.8 | 95.2 |
السعر
Value & Pricing
At USD 80 to USD 130 across two US listings, the price spread is wider than it should be. The lower end is a decent deal for a budget boot drive, but the higher end is a ripoff when you can get faster PCIe 4.0 drives for similar money. If you're buying, hunt for the cheaper listing. The CAD 278 price in Canada is just sad, don't pay that.
Amazon عرض واحد ابتداءً من 130 US$
نتتبع أسعار هذا المنتج منذ 8 نوفمبر 2026. سيظهر الرسم البياني عند توفر المزيد من البيانات.
اقرأ المزيد
Overview
The WD Blue SN550 is the budget NVMe drive that made DRAM-less cool. It's not going to win any speed contests against PCIe 4.0 monsters, but for a cheap boot drive or a laptop upgrade, it's still a solid pick. The one thing to know: it's reliable enough for most people, but the 250GB version is small and the cache situation can bite you.
Common Questions
Q: Is this drive good for gaming?
It'll load games faster than a hard drive, but don't expect miracles. The 250GB capacity means you'll only fit a couple of modern titles anyway. For a game library, get something bigger.
Q: Will this work in my laptop?
If your laptop has an M.2 2280 slot with PCIe 3.0 support, yes. It's a standard size and the DRAM-less design actually helps with power consumption, which is nice for laptops.
Q: Is the DRAM-less design a problem?
For everyday use, no. For heavy sustained writes like video editing or large file transfers, yes. The cache fills up and speeds drop significantly. If that's your workload, get a drive with DRAM.
Who Should Skip This
If you're building a new system or need more than 250GB, this isn't it. Go get a 1TB PCIe 4.0 drive like the Lexar NM790 or Crucial T500 instead. The SN550 is for budget upgrades on older machines, not for anyone who needs real capacity or speed.
Verdict
The SN550 is a decent budget boot drive if you can find it at the low end of the price range. It's not exciting, it's not fast by modern standards, and the 250GB capacity is cramped. But for a basic laptop upgrade or a secondary drive, it gets the job done. Just don't expect it to handle heavy sustained writes without slowing down.
