PNY CS2342 review: An awesome teeny-tiny SSD for your Steam Deck

At a glance

Expert's Rating

Pros

Lightning-fast with light loads
Very affordable
2230 form-factor is suitable for smaller devices such as Steam Decks

Cons

Slows to 750MBps during very long writes
PNY doesn’t disclose the TBW rating

Our Verdict

With light-to-average workloads the CS2342 is an absolutely fantastic performer — the fastest I’ve seen in the 2230 form factor. But for very long writes, it falls well behind the competition.

Price When Reviewed

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PNY didn’t fib in its PR — the CS2342 is a mega burner with smaller data sets. In a class of its own. It’s an excellent choice for everyday use or a Steam Deck.

Alas, the relatively sparse allocation of secondary cache means it’s definitely not the drive you want for writing large data sets.

Read on to learn more, then see our roundup of the best SSDs for comparison.

What are the PNY CS2342’s features?

Why PNY chose to name a 2230 (22mm wide, 30mm long) drive the CS2342 when there’s a 2242 form-factor for M.2 SSDs is a puzzler. Yes, there’s a 3 in there rather than a 2, but I did a double-take before I had it out of the box. I’m guessing that more than one buyer will be confused.

The CS2342 is truly a 2230 form factor, PCIe 4.0 x4, NVMe, M.2 SSD — designed to fit in Steam Decks and other small form-factor devices. The controller is a Phison PS5027-E27-75 host memory buffer (system memory as primary cache) type, and the NAND is fast, layered TLC (see the performance discussion).

PNY warranties the CS2343 for five years, but this is mitigated by a TBW (terabytes that may be written) rating: 600TBW per 1TB of capacity, the norm for TLC, though finding this on the website is impossible.

Most users don’t write nearly as much data as they might suppose, so chalk this up as a largely non-issue. Unless of course you’re a journalist trying to relay facts or a user trying to find them.

How much does the PNY CS2342 cost?

The pricing of the CS2342 is $96.99 for the 1TB version and $161.99 for 2TB, and about $6 less on Amazon, at the time of this writing. That’s a little cheaper than the WD SN770M and Corsair MP600 Core Mini competition (see the performance section) when we checked on Amazon for this review.

The cost of 2230 SSDs is a bit high due to the whole wring-every-last-buck-out-of-gamers thing that Nintendo recently doubled-down on. To that I say, give me MAME.

How fast is the PNY CS2342?

The CS2342’s performance is highly dependent upon the size of the data set you throw at it. As you can see below, it torches the competition in CrystalDiskMark 8 — with a 32GiB test load. That’s a good 2GBps faster than the competition both reading and writing with the lighter load. Certainly nothing to sneeze at.

Alas, I standardized on the 64GiB test load long ago, with which the CS2342 was still impressive while reading, but not nearly so when writing.

For most users, the CS2342’s combination of affordability and lightning-fast sequential transfers with smaller data sets makes it the 2230 SSD to buy.

This is rippingly fast, boys and girls. A good 2GBps faster reading and writing than any other 2230 SSD I’ve tested. It’s too bad I can’t make the write speed official.

The issue is the relatively small amount of secondary cache allotted. Writing anything much beyond 70GB drops speed to the 750MBps native write rate. This affected a number of tests. Note that slowdown shown below only occurred when I didn’t give the drive time to recover after a previous 48GB write.

While a 750MBps NAND native write rate is actually spectacular, you buy NVMe for multiple gigabytes per second. That’s what you get, but only with relatively small data sets. As you can see by the point the speed dropped off.

On the sunny side, the 750MBps native write rate is far faster than that of older TLC or current QLC, both of which can drop to hard drive speeds. But it’s not the 3GBps you get with the secondary cache in play. Bummer.

As I just hinted at, while the controller doesn’t allot more secondary cache on the fly, give it a few minutes off and it will replenish the supply

Below are the CS2342’s CrystalDiskMark 8’s 64GiB work load performance numbers. The write is considerably lower than the 6GBps shown in the first graphic, though the 7GBps read speed remains impressive indeed.

Though the PNY CS2342’s numbers in CrystalDiskMark 8’s sequential throughput tests are good, they’re nowhere near as good as they were with the smaller 32GiB work load.

The PNY CS2342 held its own in CrystalDiskMark 8’s 4K tests, though I was hoping for some more spectacular numbers. Ah, well.

The 48GB file write time in the chart below is with the drive completely empty with plenty of secondary cache available. If you stack the file and folder and single-file writes, you will get lower numbers as shown in the second graphic in this section. As secondary cache tends to be a percentage of available NAND, it’s a good bet that the 1TB drive allots only around 35GB of secondary cache and would turn in a slower time. Still, it’s the fastest of the three drives overall.