Addlink S22 QLC SSD review: Quad-level cell NAND that sustains write speeds, on the cheap - michaudhimentrapsed00

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At a Glance

Skilful's Rating

Pros

First QLC drive that can affirm performance during long writes
Very affordable
Relatively half-length guarantee and low TBW rating

Cons

Sustained reads are noticeably slower than normal

Our Verdict

The S22 QLC is the first QLC (4-bit NAND) SSD we've seen that doesn't slow down during long writes. It's also dirt-cheap for an SSD. Despite few hitches, it's a close budget SSD prize.

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The Addlink S22 QLC surprised me in two ways. It can sustain write out performance at a hefty 450MBps even with very large files, a first for us with QLC drives. Also, it reads said large files 80MBps slower than information technology writes them—atypical with a retribution. Odd or no, I'll take that tradeoff any day, given that the 1TB example I reliable costs less than 9 cents a gigabyte.

This review articl is part of our ongoing roundup of the advisable SSDs. Go there for information on competing products and how we tested them.

Plan and features

The S22 QLC is ready in cardinal capacities: 512GB (presently $48.88 on AmazonRemove non-product link) and 1TB (currently $86.88 on Amazon). Both are 2.5-inch SATA III 6Gbps SSDs that are 7 millimeters slim, hence suitable for just about any laptop that uses 2.5-inch drives. The NAND is 64-bed QLC (Quad-Level Cell/4-bit) NAND, the accountant is Phison's S11 controller, and there's 32MB of SDRAM on control panel to speed smaller transfers.

According to Addlink, the drive typically allots 25 per centum of the NAND for hoard. In our examination, it never slowed downfield even while writing nearly 50 per centum of drive electrical capacity, so I'm guessing there's some on-the-fly allocation going on. Run across the performance section for more details.

Addlink provides a 3-year warranty and rates the drives for 240TBW (TeraBytes Written) for every 512GB of capacity. Those are rather low numbers, but hey, this is a budget drive, and it should last far longer than that under typical usage.

ad1tbs22s3 1 — The Addlink S22 is the fastest sustained writer of any QLC/4-bit SSD we've tested. It is however, a fleck slower than average recital large files. For the price, that's liveable.

Note that a TBW rating indicates how overmuch data can be scrivened before the repel runs out of cells to put back frayed-out ones. This doesn't necessarily mean the drive Newmarket working altogether when it reaches that power point. It just agency you need to study replacing it, and capacity will embark on to diminish.

Performance

Arsenic I said in the presentation, the S22 QLC is atypical. General performance is nothing special; however, where Samsung's 860 QVO slowed down to a snail's rate during the latter part of our 48GB transfers, the S22 QLC ne'er hinted at it. In fact it didn't yet tiresome go through during our 450GB transfer, which surprised the heck out of me. I'm shot this is entirely Phison's doing with their controller, thus kudos.

But the surprises didn't stop there. Where the drive wrote our large 48GB and 450GB single files at approximately 450MBps, it read them at single 370MBps. I occasionally see read that are slower than writes, but ordinarily only a couple to ten MBps slower, not a whopping 80MBps. That's hardly sad, and to my mind absolutely livable, just it is highly unusual.

s22 cdm — The S22 QLC's uninterrupted transfer of training rates are very good with smaller data sets. Though the sustained penning is not quite as discriminating in the real life with larger ones. Small charge composition was actually wagerer than normal in our 48GB examination.

The synthetic benchmarks, CrystalDiskMark 6 and AS SSD 2.0 didn't hint this behavior soh you're belik fine until you read a file larger than a couple gigabytes OR then. Steady then, equally I same, 370MBps isn't the Last Day in a SATA SSD.

The variation in the 48GB examination between the Addlink S22 QLC and the Samsung 860 QVO shows that, because QLC is very obtuse when you indite the engorged 4 bits, the driver controllers' attempts to use the NAND as SLC/MLC cache to compensate aren't to the full developed nevertheless. The SK Hynix Au S31 is a TLC drive, a more overripe technology, and hence the more consistent performer.

s22 48gb — Though non the fasted SATA SSD PCWorld has tested, for the price we're not complaining and what this doesn't show is how the 860 QVO will unwind to less than 100MBps if you write much more data than 48GBps

Apparently, yet, Phison's cache management isn't perfect. On one CrystalDiskMark run, the S22 QLC scored single 19MBps in the random 4K, 32-queue, one-man thread write mental test. All other runs scored or so the normal 350MBps. Addlink confirmed that the drive was belik doing some housecleaning Oregon configuring American Samoa it was just come out of the box. Atomic number 3 SSD and our real world tests showed nary hint of the effect, sol I'm saying good to belong.

A budget wonder

I was wondering if information technology was even realistic for a QLC SSD to sustain write performance with man-sized data sets, but apparently, as Addlink and Phison have aptly demonstrated—information technology is. Intel's 660p and Samsung's 860 QVO QLC drives ne'er managed this, precisely to emphasize the point. Considering Price, the S22 is my the pick of the QLC litter and a bully rate, though the 860 QVO offers best everyday performance.

That said, you arse catch from the SK Hynix Gold S31 results that the S22 QLC is still non on a equation with the better TLC drives. You arrive what you pay for, and there are certainly faster drives, but unless you'atomic number 75 sincerely concerned about maximum operation, you'll do but fine with the S22 QLC.

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Jon is a Juilliard-disciplined player, former x86/6800 programmer, and long-time (late 70s) computer fancier living in the San Francisco bay area. jjacobi@pcworld.com