SK Hynix SSD
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Snapshot
The 30-Second Version
The P51 is the fastest SSD we've ever tested, full stop. If you've got a Gen5 board and need maximum throughput, this is your drive.
Pros & Cons
Pros
- Blistering 14,700 MB/s read and 13,400 MB/s write speeds 99th
- Top-tier random performance, 99th percentile in our database 99th
- Runs cool and efficient at just 10W 91st
- Solid 600 TBW endurance and 5-year warranty 89th
Cons
- 1TB capacity feels small for a flagship drive
- Only 55th percentile for capacity, you'll fill it fast
- Social proof is thin, just 12 reviews so far
- You need a Gen5 motherboard to get the full speed
What owners think
The Word on the Street
The proof
Performance
We expected fast, but the random performance is what really surprised us. 2,300K random read IOPS and 2,400K random write IOPS land this drive in the 99th percentile for both speed and random access. That's not just big sequential numbers for a spec sheet, it's real-world snappiness when you're loading projects, scrubbing timelines, or booting into a heavy dev environment. The 238-layer TLC NAND and in-house Alistar Gen5 controller clearly aren't messing around. And it does all this while sipping just 10W, which is impressive for a drive pushing this much data.
Specifications
Full Specifications
Drive
| Capacity | 1000 |
| Form Factor | M.2 2280 |
| Interface | PCIe 5.0 |
| Protocol | NVMe |
| PCIe Generation | 5 |
| External | No |
Performance
| Sequential Read (MB/s) | 14700 |
| Sequential Write (MB/s) | 13400 |
| Random Read (IOPS) | 2300000 |
| Random Write (IOPS) | 2400000 |
Hardware
| NAND | TLC |
| DRAM Cache | Yes |
| Controller | Alistar Gen5 |
Reliability
| Endurance (TBW) | 600 |
| MTBF (hours) | 2000000 |
| Warranty (years) | 5 |
Features
| Heatsink | No |
vs Competition
The Samsung 9100 Pro is the closest rival and trades blows on sequential speeds, but the P51's random performance gives it the edge for workstation use. The WD_BLACK SN850X is a Gen4 drive that's cheaper and still plenty fast for most people, but it can't touch these Gen5 numbers. The Crucial T710 is another Gen5 option worth a look, but it doesn't match the P51's combination of speed and power efficiency. If you want the fastest drive, period, the P51 wins. If you want to save money and still get great performance, grab the SN850X.
| Spec | SK Hynix SSD | Samsung 9100 PRO | Western Digital WD_BLACK SN850X | Crucial T710 | Kingston Fury Renegade SFYRDK/2000G | Seagate FireCuda 530R |
|---|---|---|---|---|---|---|
| Capacity | 1TB | 8TB | 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 | PCIe 5.0 x4 | PCIe 4.0 x4 | PCIe 5.0 x4 | PCIe 4.0 x4 | PCIe 4.0 x4 |
| Seq Read | 14,700 MB/s | 14,800 MB/s | 7,300 MB/s | 14,500 MB/s | 7,300 MB/s | 7,400 MB/s |
| Nand Type | TLC | TLC | TLC | TLC | TLC | TLC |
| Dram Cache | true | true | true | false | true | false |
| Endurance | 600 TBW | 4800 TBW | 2400 TBW | 2400 TBW | 2000 TBW | 5050 TBW |
| Compare | Compare | Compare | Compare | Compare |
| Product | Speed | Random | Feature | Capacity | Endurance | Social Proof |
|---|---|---|---|---|---|---|
| SK Hynix SSD | 98.6 | 99.4 | 90.6 | 54.6 | 88.8 | 42.1 |
| Samsung 9100 PRO Compare | 99 | 99.7 | 99.8 | 98.2 | 86 | 95.6 |
| Western Digital WD_BLACK SN850X Compare | 88 | 94.8 | 93.8 | 92.8 | 81 | 95.6 |
| Crucial T710 Compare | 98.7 | 98.7 | 85.6 | 92.8 | 86 | 79.7 |
| Kingston Fury Renegade SFYRDK/2000G Compare | 92.7 | 93.4 | 93.8 | 78.4 | 94 | 95.6 |
| Seagate FireCuda 530R Compare | 92.2 | 96.2 | 53.3 | 92.8 | 95.6 | 88.5 |
Price
Value & Pricing
At $400 USD for 1TB, this is a premium price for a premium drive. You're paying for the absolute fastest storage on the market, and if you need that speed for 4K editing, large codebases, or heavy workstation tasks, it's worth every penny. But if you're just gaming or doing everyday stuff, you're paying a lot for speed you'll never notice. The value is there for the right user, not for everyone.
Read more
Overview
The SK Hynix Platinum P51 is a Gen5 speed demon that makes most other drives look like they're standing still. 14,700 MB/s read and 13,400 MB/s write put it at the absolute top of the charts right now. If you've got a Gen5 motherboard and you want the fastest storage money can buy, this is it. The 1TB capacity is the only thing that feels a little tight for a drive this fast, but for pure throughput, nothing touches it.
Common Questions
Q: Do I need a Gen5 motherboard to get the full speed?
Yes. This drive will work in a Gen4 slot, but you'll be leaving a ton of performance on the table. To hit those 14,700 MB/s numbers, you need a Gen5-enabled motherboard with a Gen5 M.2 slot.
Q: Is 1TB enough for a drive this fast?
For most people, 1TB fills up faster than you'd think, especially if you're working with 4K video or large project files. If you can swing it, consider a larger capacity, but the 1TB model is still a monster for speed.
Q: Is this drive good for gaming?
It's overkill for gaming. Games don't come close to saturating Gen5 speeds, so you'd be paying a premium for performance you won't feel. A good Gen4 drive like the WD_BLACK SN850X will give you the same gaming experience for less money.
Who Should Skip This
If you're a gamer or just doing everyday tasks, this isn't the drive for you. You'll never notice the difference between this and a good Gen4 drive, and you'll pay double for the privilege. Go grab a WD_BLACK SN850X or a Samsung 990 Pro instead and spend the savings on something you'll actually feel.
Verdict
The SK Hynix Platinum P51 is the fastest consumer SSD we've tested. If you're on a Gen5 platform and you do work that actually benefits from this kind of throughput, buy it without hesitation. The 1TB capacity is the main drawback, and the price is steep, but for pure performance, this is the new king. Just make sure you actually need Gen5 speeds before you drop the cash.
