fanxiang S501 512GB PCIe 3.0 x4 NVMe M.2 2280

The fanxiang S501 is a budget NVMe drive that punches above its weight on value. TLC NAND and 320 TBW endurance beat most drives at this price, and users love the easy installation and snappy everyday performance. Sequential speeds are middle of the pack at 2,150/1,600 MB/s, but that's fine for boot drives and older systems. Quality control is the main concern, with a few verified reports of dead drives out of the box. If you need cheap, reliable storage for an upgrade or repair, this is a solid pick.

Let's talk numbers. The S501 is rated for 2,150 MB/s sequential reads and 1,600 MB/s writes. In our database, that puts its speed at the 49th percentile, smack in the middle of the pack. For a PCIe 3.0 drive, that's about what you'd expect. It's not going to touch a Gen4 drive like the Crucial T500 or Samsung 990 EVO, but it's roughly five times faster than a SATA SSD, which is exactly what fanxiang claims. If you're coming from a spinning hard drive or an older SATA drive, this will feel like a completely different machine.

The random performance sits at the 62nd percentile, which is actually a bit better than the sequential numbers suggest. That matters more than you'd think for everyday use. Booting Windows, launching apps, loading game levels, those are all random I/O workloads. The fact that this drive handles those reasonably well means it'll feel snappy even if the big sequential numbers don't blow you away. The TLC NAND helps here too. TLC drives tend to hold up better under sustained writes than QLC drives, which can slow to a crawl once their cache fills up.

One thing worth noting: the endurance rating of 320 TBW is solid for a 512GB drive. That's the 69th percentile in our database. For context, that means you could write about 175GB per day for five years before hitting the rated limit. Most people won't come close to that. If you're using this as a boot drive or for light gaming, it'll outlive the rest of the machine.

The S501 sits in an interesting spot. It's not trying to compete with the big names on raw speed, and that's fine. The Crucial T500 and Samsung 990 EVO are both Gen4 drives that will absolutely smoke this thing in sequential benchmarks. The T500 is a particularly strong performer in our database, and the 990 EVO is Samsung's usual polished package. But those drives cost real money, and if you're putting them in an older system with a PCIe 3.0 slot, you're leaving performance on the table anyway.

Against other budget drives, the S501 holds its own. The Western Digital WD Blue SN5100 is probably the closest mainstream competitor, and it's a solid drive with better brand recognition. The MSI SPATIUM M480 PRO and Corsair MP700 Elite are in a different league entirely, Gen4 and Gen5 drives aimed at enthusiasts who actually need that bandwidth. The S501's real competition is the no-name budget drives flooding Amazon, and against those, the TLC NAND and 320 TBW endurance give it a legitimate edge.

The trade-off is simple. You're giving up peak performance and brand reputation for a lower price. For a boot drive or secondary storage in an older system, that's a smart trade. For a primary drive in a new high-end build, you'd be better off spending more on something faster.

Here's where the S501 earns its keep. The affordability ranking sits at the 78th percentile, which means it's cheaper than most drives we track. The US listing shows $93 for the 512GB model, and the Canadian listing is CAD 134. For a TLC NVMe drive with 320 TBW endurance, that's a genuinely good deal. You're not paying for a brand name or cutting-edge tech, you're paying for a solid everyday drive that does the job.

Compare that to something like the Samsung 990 EVO or Crucial T500, and you're looking at drives that cost significantly more for performance most people won't notice in daily use. Sure, those drives are faster on paper, but if you're booting Windows and launching Chrome, the difference between 2,150 MB/s and 5,000 MB/s is measured in fractions of a second. The S501 makes a strong case that for most people, the extra money is better spent elsewhere.

The value story gets a little murkier when you factor in the quality control concerns. A great price doesn't mean much if you get a drive that dies on day one. The good news is that fanxiang's warranty should cover that, and the overwhelming majority of reviews are positive. But it's something to keep in mind. You're saving money upfront, and in exchange, you're taking on a slightly higher risk of getting a lemon.

The fanxiang S501 is one of those drives that makes you realize how far budget NVMe storage has come. It's a 512GB M.2 2280 PCIe 3.0 x4 drive with TLC NAND, rated for 2,150 MB/s reads and 1,600 MB/s writes. Nothing flashy on paper, but for the price it's sitting at, it's hard not to pay attention. This is the kind of drive you grab when you're resurrecting an older laptop, building a cheap office PC, or just need a fast boot drive without spending real money.

Who's it for? Honestly, anyone who wants a snappy everyday drive and doesn't need bleeding-edge Gen4 or Gen5 speeds. The affordability ranking lands at the 78th percentile in our database, which means it's priced better than most drives we track. The endurance story is decent too, 320 TBW puts it at the 69th percentile. That's not going to win any awards, but for a budget drive, it's respectable.

What makes it interesting is the value proposition. You're getting real NVMe performance, TLC NAND instead of the QLC you often see at this price point, and a drive that users seem genuinely happy with. The 4.4-star rating across 995 reviews backs that up. But there's a catch, and we'll get to it. Quality control seems to be a bit of a lottery here, and that's the thing you need to know before clicking buy.

If you're building a new high-end system, skip this. The 512GB capacity is going to feel cramped within a year, and the Gen3 speeds will bottleneck a modern CPU and GPU. You'd be better off spending more on a 1TB Gen4 drive like the Crucial T500 or Samsung 990 EVO, especially if you're doing video editing or working with large files. The S501 is a budget drive for budget builds, not a foundation for a flagship system.

PS5 owners should also look elsewhere. The drive doesn't meet Sony's minimum requirements, and fanxiang says so right in the product description. If you need console storage, you'll need a Gen4 drive with at least 5,500 MB/s reads. And if you're the type who wants a drive with a long track record and rock-solid quality control, the verified reports of dead units out of the box might give you pause. In that case, the Western Digital WD Blue SN5100 is a safer bet with similar performance and better brand support.

If you're looking for a cheap way to breathe life into an older laptop or desktop, the S501 is a genuinely good option. The TLC NAND, 320 TBW endurance, and solid random performance make it a better choice than most QLC budget drives. Users consistently report easy installation and immediate Windows recognition, which is exactly what you want when you're doing a quick upgrade. The 4.4-star rating across nearly a thousand reviews suggests most people are happy with their purchase.

But if you're building a new system and this is going to be your main drive, think twice. The 512GB capacity is going to fill up fast with modern games, and the sequential speeds are nothing special. You'd be better off spending a bit more on a 1TB drive from a more established brand, or stepping up to Gen4 if your motherboard supports it. The quality control concerns are also worth weighing. Most drives are fine, but the verified reports of dead units out of the box are hard to ignore.

For a secondary drive, a budget build, or a repair job, this is an easy recommendation. For a primary drive in a new system, it's a compromise.