Lexar NM990 2TB PCIe 5.0 x4 NVMe M.2 2280
يصل قرص Lexar NM990 إلى سرعة قراءة 14000 ميجابايت/ث وكتابة 10000 ميجابايت/ث عبر PCIe 5.0 x4، مع 2000K IOPS قراءة عشوائية، مما يجعله من أقراص الجيل الخامس عالية الأداء. تصميمه بدون DRAM بتقنية TLC يقلل استهلاك الطاقة، وهو مثالي لأجهزة الكمبيوتر المحمولة حيث حصل على 87.1/100، بينما الاستخدام المحمول هو أضعف نقطة لديه بـ 21.9/100. الأنسب لمستخدمي اللابتوب الذين يحتاجون أقصى سرعة نقل متسلسلة لنقل الملفات الكبيرة أو تحرير الفيديو.
لمحة سريعة
The 30-Second Version
The Lexar NM990 2TB is one of the fastest drives we've tested, with 14,000 MB/s reads and top-tier random performance. It's expensive and DRAM-less, but if you want PCIe 5.0 speed, this is a serious contender. Worth it if you need the best, skip it if you're on a budget.
Pros & Cons
الإيجابيات
- Blistering 14,000 MB/s read speeds 98th
- Top-tier random performance at the 98th percentile 97th
- 2TB capacity hits a sweet spot for gamers and creators 78th
- PCIe 5.0 future-proofing for next-gen platforms 77th
السلبيات
- DRAM-less design is a weird choice for a flagship
- Endurance is good but not great at 1,500 TBW
- Portable use is basically a non-starter
- Expensive compared to PCIe 4.0 alternatives
الأدلة
Performance
The headline numbers are absurd. 14,000 MB/s sequential reads and 10,000 MB/s writes mean game loads, file transfers, and video scrubbing all feel instant. Random performance is where this drive really shines, landing at the 98th percentile in our database. That's best-in-class territory. The DRAM-less design doesn't seem to hurt much here, though sustained writes under heavy load might dip more than a drive with a dedicated cache. For most people, you'll never notice.
Specifications
Full Specifications
Drive
| Capacity | 2000 |
| Form Factor | M.2 2280 |
| Interface | PCIe 5.0 x4 |
| Protocol | NVMe |
| PCIe Generation | 5 |
| External | No |
Performance
| Sequential Read (MB/s) | 14000 |
| Sequential Write (MB/s) | 10000 |
| Random Read (IOPS) | 2000000 |
| Random Write (IOPS) | 1400000 |
Hardware
| NAND | TLC |
| DRAM Cache | No |
Reliability
| Endurance (TBW) | 1500 |
| MTBF (hours) | 1500000 |
vs Competition
Against the Samsung 9100 PRO, the NM990 trades blows on speed but gives up endurance and brand trust. The WD_BLACK SN850X is a PCIe 4.0 drive that's cheaper and still excellent for gaming, though it can't touch the NM990's sequential numbers. The Crucial T710 is the closest direct competitor in the PCIe 5.0 space, and it's a toss-up depending on price. The Kingston Fury Renegade and Seagate FireCuda 530R are both solid PCIe 4.0 options that cost less and still feel fast. If you need the absolute fastest drive, the NM990 is in the conversation. If you just want a great drive, the PCIe 4.0 crowd is hard to ignore.
| Spec | Lexar NM990 | Western Digital Black SN850X | Samsung 9100 PRO | Kingston FURY Renegade G5 SFYR2S/4T0 | Crucial T500 | Seagate FireCuda 530R |
|---|---|---|---|---|---|---|
| Capacity | 2TB | 4TB | 4TB | 4TB | 2TB | 4TB |
| Form Factor | M.2 2280 | M.2 2280 | M.2 2280 | M.2 2280 | M.2 2280 | M.2 2280 |
| Interface | PCIe 5.0 x4 | PCIe 4.0 x4 | PCIe 5.0 x4 | PCIe 5.0 x4 | PCIe 4.0 x4 | PCIe 4.0 x4 |
| Seq Read | 14,000 MB/s | 7,300 MB/s | 14,800 MB/s | 14,800 MB/s | 7,400 MB/s | 7,400 MB/s |
| Nand Type | TLC | TLC | TLC | TLC | TLC | TLC |
| Dram Cache | false | true | true | true | true | false |
| Endurance | 1500 TBW | 2400 TBW | 2400 TBW | 4000 TBW | 1200 TBW | 5050 TBW |
| Compare | Compare | Compare | Compare | Compare |
| المنتج | Speed | Random | Feature | Capacity | Endurance |
|---|---|---|---|---|---|
| Lexar NM990 | 96.8 | 97.8 | 71.7 | 78.3 | 76.9 |
| Western Digital Black SN850X Compare | 88.4 | 95.2 | 88.9 | 92.5 | 87.9 |
| Samsung 9100 PRO Compare | 99.1 | 99.8 | 99.7 | 92.5 | 85.8 |
| Kingston FURY Renegade G5 SFYR2S/4T0 Compare | 99.4 | 98.7 | 90.4 | 92.5 | 93.4 |
| Crucial T500 Compare | 93.8 | 96.5 | 98.9 | 78.3 | 82.7 |
| Seagate FireCuda 530R Compare | 92.5 | 96.4 | 53.3 | 92.5 | 95.6 |
السعر
Value & Pricing
Pricing is all over the place in Canada, ranging from CAD 540 to CAD 775 across three listings. That's a CAD 235 spread, which is wild. If you're buying in Canada, shop around because the cheapest listing is a much better deal than the most expensive one. In the US, it's listed at USD 503. For a 2TB PCIe 5.0 drive with this kind of speed, that's not outrageous, but you're paying a premium over PCIe 4.0 drives that are still very fast for everyday use.
Amazon عرض واحد ابتداءً من 503 US$
نتتبع أسعار هذا المنتج منذ 8 نوفمبر 2026. سيظهر الرسم البياني عند توفر المزيد من البيانات.
اقرأ المزيد
Overview
The Lexar NM990 2TB is a PCIe 5.0 drive that screams. 14,000 MB/s reads and 10,000 MB/s writes put it in the top tier of our database, and the random performance is even better at the 98th percentile. This is a drive built for people who want the fastest possible storage and don't mind paying for it.
But there's a catch. It's DRAM-less, which is unusual for a flagship drive, and the endurance rating of 1,500 TBW is solid but not class-leading. Still, for raw speed, this thing is a monster.
Common Questions
Q: Do I need a PCIe 5.0 motherboard to use this drive?
Yes, to hit the full 14,000 MB/s speeds you'll need a PCIe 5.0 M.2 slot. It will work in a PCIe 4.0 slot, but you'll be capped at around 7,000 MB/s.
Q: Is the DRAM-less design a problem for gaming?
For gaming, no. The NM990's random performance is excellent even without DRAM, and games rarely push sustained writes hard enough to expose the weakness.
Q: How does the endurance compare to other 2TB drives?
At 1,500 TBW, it's above average but not class-leading. Some competitors offer 2,000 TBW or more, so heavy content creators who write a lot of data might want more headroom.
Who Should Skip This
Skip this if you're on a PCIe 4.0 platform or you don't do heavy file transfers. The speed advantage over a good PCIe 4.0 drive like the SN850X is real but not life-changing for most people. Also skip it if you need a portable drive, the portable score of 21.9 out of 100 is one of the worst we've seen for this category.
Verdict
Buy this if you have a PCIe 5.0 motherboard and you want the fastest storage money can buy right now. It's a great fit for high-end gaming rigs and content creation workstations where every second counts. The DRAM-less design is a minor concern, but the real-world performance speaks for itself.