This article contains affiliate links. If you buy through our links, we may earn a commission at no extra cost to you.
PCIe 5.0 SSDs stopped being exotic in early 2026. The WD Black SN8100 launched using a new SMI SM2508 controller that finally cracked the heat and power consumption problems that plagued first-generation Gen5 drives — and pushed prices on earlier PCIe 5.0 options like the Crucial T705 down to competitive territory. Meanwhile, the Samsung 9100 PRO established new sequential write records with its 5nm controller and landed at $199 — less than the aging Gen4 990 PRO. If you’re building or upgrading right now, Gen5 deserves serious consideration if your board supports it. For a focused roundup of the top PCIe 5.0 picks, see our best PCIe 5.0 SSDs for gaming guide.
Quick Picks
- Best overall: WD Black SN8100 1TB — 14,900 MB/s reads, runs cool, $284
- Best value Gen5: Samsung 9100 PRO 1TB — 13,400 MB/s writes, 5nm controller, $199 — cheaper than the flagship Gen4
- Best for older platforms: Samsung 990 PRO 1TB — 7,450 MB/s, $330, for AM4/LGA1200 users
- Best value by GB: SK hynix Platinum P41 2TB — 2TB for $159, 1,200 TBW endurance
Buying Guide: PCIe 5.0 vs. PCIe 4.0 in 2026
The speed gap between Gen5 and Gen4 is real: 14,900 MB/s vs. 7,450 MB/s in sequential reads. But that gap doesn’t translate 1:1 to gaming or everyday use. Game load times on PCIe 5.0 drives are typically 3–8% faster than Gen4, not the 2x implied by the bandwidth numbers. The difference shows up in content creation — loading a 50GB Premiere Pro project, exporting 4K video, or working with large Unreal Engine asset packs.
Get a PCIe 5.0 drive if:
- Your board has a PCIe 5.0 x4 M.2 slot (Z790, X670E, B650E, or newer)
- You do video editing, 3D rendering, or work with large files regularly
- You’re building a new system — the Samsung 9100 PRO at $199 now costs less than the flagship Gen4 990 PRO ($330)
Stick with PCIe 4.0 if:
- You’re on an older platform without a PCIe 5.0 slot (AM4, LGA1151, LGA1200)
- You need 2TB+ capacity at the lowest cost — the SK hynix P41 2TB at $159 saves $40 over the cheapest Gen5 option with near-identical gaming performance
Still deciding between SSD and spinning storage? See our HDD vs SSD guide for a full breakdown on when a hard drive still makes sense.
What About Gen4 vs. Gen3?
Skip PCIe 3.0 SSDs entirely. PCIe 4.0 drives deliver 3,500–7,000 MB/s reads vs. a Gen3 drive’s 3,500 MB/s ceiling. One 2026 wrinkle worth knowing: the NAND shortage has pushed the flagship Gen4 990 PRO to $330 — more expensive than the Gen5 Samsung 9100 PRO at $199. For new builds with PCIe 5.0 support, the 9100 PRO is unambiguously the better buy. Budget Gen4 (SK hynix P41 2TB at $159) remains the standout for capacity-first builds. For a deeper look at what PCIe 5.0 means for bandwidth, platform compatibility, and real-world workloads, see our PCIe 5.0 explained guide.
Heatsink: Required or Optional?
PCIe 5.0 drives run hot under sustained load — typically 65–80°C without airflow. Heatsink versions of the SN8100, 9100 PRO, and T705 add $15–$20 and are worth it if:
- Your M.2 slot is in an enclosed area with no airflow
- You’re doing sustained large transfers regularly
If your board has a built-in M.2 heatspreader plate, skip the heatsink SKU — you’re already covered.
Detailed Reviews
1. WD Black SN8100 1TB — Best Overall NVMe SSD
WD Black SN8100 1TB NVMe SSD
The SN8100 is the drive that makes Gen5 make sense at consumer prices. Western Digital (now under the SanDisk brand) paired Silicon Motion’s SM2508 controller with Kioxia’s BiCS8 218-layer TLC NAND, and the result is a drive that reads at 14,900 MB/s while drawing only 6.2W — dramatically lower than the Phison E26-based T705’s peak power draw. Tom’s Hardware called it “the fastest all-around drive out there” in their SSD roundup.
CrystalDiskMark 8.0 records 14,820 MB/s read and 10,870 MB/s write. Random 4K performance hits 1.6 million IOPS read — which matters for OS and application load times more than sequential numbers do.
The 1TB model carries 600 TBW endurance and a 5-year warranty. At $284, it leads on peak sequential reads and power efficiency among Gen5 drives. Note that NAND shortage pricing has pushed this above its $179.99 MSRP — currently trading around $284 on Amazon. The Samsung 9100 PRO at $199 delivers comparable real-world performance at a lower cost; if you prioritize record-setting write speeds or lowest Gen5 power draw, the SN8100 earns its price.
2. Samsung 9100 PRO 1TB — Best Value Gen5
Samsung 9100 PRO 1TB NVMe SSD
Samsung’s 9100 PRO broke the sequential write record with 13,400 MB/s — a 22% edge over the SN8100’s 11,000 MB/s. That advantage matters if you’re ingesting raw camera footage, compiling large codebases, or doing sustained database writes. For gaming or general desktop use, you won’t feel it.
The 5nm controller is the real story. Samsung quotes 49% better efficiency than the 990 PRO generation, and that pays off in thermals: the 9100 PRO runs cooler under sustained write loads than the T705 or most other Gen5 options. It supports NVMe 2.0’s I/O Determinism feature, which reduces latency spikes during mixed read/write workloads.
At $199 for 1TB, the 9100 PRO undercuts the WD SN8100 by $85 while delivering record-setting sequential write speed — and costs $131 less than the Gen4 Samsung 990 PRO. That price inversion is the defining storage story of 2026: the NAND shortage has made Gen5 flagship drives cheaper than Gen4 flagships. Samsung also offers it with a low-profile heatsink (ASIN B0DX2CFF9X) that sits notably lower than most add-on heatsinks, useful in tight ITX builds.
3. Crucial T705 1TB — Best Phison Gen5 Option
Crucial T705 1TB NVMe SSD
The T705 was among the first PCIe 5.0 drives to launch and is now priced at ~$248 — higher than its pre-shortage lows due to NAND supply constraints, but meaningfully less than the SN8100 for buyers prioritizing read speed per dollar. Its Phison PS5026-E26 controller and Micron 232-layer TLC NAND are proven — the same platform powered multiple high-end Gen5 drives, meaning firmware is mature and any early stability issues are long resolved.
Sequential reads hit 13,600 MB/s and writes reach 10,200 MB/s. That’s 9% behind the SN8100 on reads and 7% behind on writes, but $36 cheaper. For gaming, you will not notice the difference. For content creation, the performance gap is real but marginal in all but the most demanding workflows. For a direct head-to-head between the T705 and the flagship Gen4 drive, see our Samsung 990 PRO vs Crucial T705 comparison.
The genuine concern is heat. Without a heatsink, the T705 regularly hits 80–85°C under sustained loads in systems without active M.2 airflow. The heatsink version (ASIN B0CTRXBKHP) costs about $15 more and keeps temperatures 20°C lower. If your case has direct airflow over the M.2 slot, the bare drive is fine.
4. Samsung 990 PRO 1TB — Fastest PCIe 4.0 NVMe
Samsung 990 PRO 1TB NVMe SSD
The 990 PRO is the benchmark every Gen4 drive is measured against. At 7,450/6,900 MB/s sequential read/write, it outperforms every other Gen4 consumer SSD in both synthetic and real-world workloads — edging out the SK hynix Platinum P41 and the WD Black SN850X in CrystalDiskMark comparisons.
It works everywhere. PCIe 4.0 x4 is backward-compatible with PCIe 3.0 x4 slots, so it drops into older AM4 systems and still delivers ~3,500 MB/s — a significant improvement over any SATA drive. PS5 compatible at 7,450 MB/s — above Sony’s 5,500 MB/s minimum.
There’s an important caveat in 2026: at $330, the 990 PRO costs $131 more than the Samsung 9100 PRO Gen5. The NAND shortage has pushed the Gen4 flagship well past its value point. If your board has a PCIe 5.0 M.2 slot, the 9100 PRO is the obvious choice — faster and cheaper. The 990 PRO makes sense only for platform-locked buyers on AM4, LGA1200, or boards without PCIe 5.0 M.2 slots. For a performance comparison with the WD Black SN850X, see our Samsung 990 PRO vs WD Black SN850X comparison.
A note on the early firmware issue: Samsung shipped early 990 PRO units with a bug that caused the SSD health indicator to deflate incorrectly. Firmware update 3B2QFXO7 resolved it; all current inventory ships corrected.
5. SK hynix Platinum P41 2TB — Best Value Per GB
SK hynix Platinum P41 2TB NVMe SSD
The P41 offers 2TB of PCIe 4.0 storage for around $159 — the best price-per-gigabyte among high-performance drives on this list. That’s roughly $79.50 per TB vs. $199/TB for the Samsung 9100 PRO or $330/TB for the 990 PRO. For anyone who prioritizes capacity over peak sequential throughput, the math heavily favors the P41.
Performance-wise, the 2TB model hits 7,000/6,500 MB/s read/write. The Samsung 990 PRO 1TB leads by 6% on reads and writes, but that gap essentially disappears in game load time tests where the bottleneck shifts to decompression and IOPS rather than raw bandwidth.
The 2TB P41 has double the endurance of most competitors: 1,200 TBW vs. 600 TBW on 1TB drives. That matters for NAS use, content creation systems, or anyone who writes large amounts of data regularly. SK hynix uses in-house 176-layer TLC NAND with their own controller — the whole package is optimized together.
The only gap: SK hynix doesn’t sell a factory heatsink version. If you run the drive in an exposed slot or a hot case, a $10 third-party M.2 heatsink covers you.
| Spec | WD Black SN8100 1TB NVMe SSD $284 9.2/10 | Samsung 9100 PRO 1TB NVMe SSD $199 9/10 | Crucial T705 1TB NVMe SSD $248 8.6/10 | Samsung 990 PRO 1TB NVMe SSD $330 8.4/10 | SK hynix Platinum P41 2TB NVMe SSD $159 8.7/10 |
|---|---|---|---|---|---|
| interface | PCIe 5.0 x4 NVMe 2.0 | PCIe 5.0 x4 NVMe 2.0 | PCIe 5.0 x4 NVMe 2.0 | PCIe 4.0 x4 NVMe 2.0 | PCIe 4.0 x4 NVMe 2.0 |
| formFactor | M.2 2280 | M.2 2280 | M.2 2280 | M.2 2280 | M.2 2280 |
| seqRead | 14,900 MB/s | 14,700 MB/s | 13,600 MB/s | 7,450 MB/s | 7,000 MB/s |
| seqWrite | 11,000 MB/s | 13,400 MB/s | 10,200 MB/s | 6,900 MB/s | 6,500 MB/s |
| endurance | 600 TBW | 600 TBW | 600 TBW | 600 TBW | 1,200 TBW |
| warranty | 5 years | 5 years | 5 years | 5 years | 5 years |
| Rating | 9.2/10 | 9/10 | 8.6/10 | 8.4/10 | 8.7/10 |
FAQ
Do I need a PCIe 5.0 SSD for gaming in 2026?
No. Game load times on a PCIe 5.0 drive like the WD SN8100 are 3–8% faster than on a good Gen4 drive like the Samsung 990 PRO. That said, the Samsung 9100 PRO Gen5 at $199 now costs less than the 990 PRO Gen4 at $330 — so there’s no longer a price reason to avoid Gen5 on a new build if your platform supports it. For drives specifically picked for gaming workloads, see our best SSDs for gaming guide. For budget options, see our best SSDs under $100 guide.
Will a PCIe 5.0 SSD work in a PCIe 4.0 slot?
Yes, at reduced speed. A Gen5 drive in a PCIe 4.0 x4 slot runs at roughly half its rated sequential bandwidth — around 7,000–7,500 MB/s. You’re paying Gen5 prices for Gen4 performance. If your platform only has PCIe 4.0 M.2 slots, the SK hynix P41 2TB at $159 is the better choice.
How much NVMe storage do I need for gaming in 2026?
At least 1TB for a primary OS + games drive. Modern AAA titles average 80–120GB per install — a 1TB drive fills up in 8–10 games. 2TB is the practical sweet spot for most gaming builds: it fits Windows, your most-played library, and a few large titles without constant management. The SK hynix Platinum P41 2TB at $159 is the most cost-efficient way to get there.
Is the Samsung 990 PRO still worth buying in 2026?
It’s still the fastest Gen4 SSD, but at $330 it’s difficult to recommend. The Samsung 9100 PRO Gen5 costs $131 less and delivers twice the sequential bandwidth. The 990 PRO only makes sense for buyers on older platforms (AM4, LGA1200, or LGA1700 boards without PCIe 5.0 M.2 slots) who need maximum Gen4 performance.
What M.2 slot do I need for these drives?
All five drives use the M.2 2280 form factor (22mm wide, 80mm long) with an M-key connector. PCIe 5.0 drives require a PCIe 5.0 x4 M.2 slot — available on Z790, X670E, B650E, and newer boards. PCIe 4.0 drives work in PCIe 4.0 or PCIe 5.0 x4 M.2 slots. Check your motherboard spec sheet for the M.2 slot’s PCIe generation before buying a Gen5 drive. For a deeper look at connector types and NVMe vs SATA, see our SSD form factors explained guide.
Why is the Gen4 Samsung 990 PRO more expensive than the Gen5 9100 PRO?
The 2026 NAND shortage — driven by AI datacenter demand — has hit older Gen4 NAND pricing harder than newer Gen5 supply chains. The 990 PRO uses mature V7 NAND that competes directly with datacenter demand, pushing its street price up from ~$140 in 2025 to $330 in 2026. TrendForce confirmed Samsung raised SSD prices another 10% in late April 2026, with further hikes possible into Q2. Budget Gen4 options like the SK hynix P41 (which uses SK hynix’s own NAND) have held price better than Samsung’s Gen4 drives.
The Bottom Line
The WD Black SN8100 at $284 is the fastest NVMe SSD you can buy — 14,900 MB/s reads, lowest power draw in Gen5. But the Samsung 9100 PRO at $199 is the stronger pick for most buyers: $85 less, record-setting 13,400 MB/s writes, near-identical real-world performance — and now cheaper than the flagship Gen4 990 PRO.
For older platforms without PCIe 5.0 support, the Samsung 990 PRO at $330 is the fastest Gen4 option available, but only platform-locked buyers should pay that premium in 2026. For capacity-first builds, the SK hynix Platinum P41 2TB at $159 delivers 2TB of high-performance storage at a price nothing else matches.