Is Fanxiang Good for a PS5?

What meets the requirement, and how we know

Sony publishes the PS5 M.2 expansion requirement openly: PCIe Gen4 x4 NVMe, a sequential read rating of at least 5,500MB/s, a heat-dissipating structure, and a physical size within the console's expansion bay. Fanxiang's listings advertise specifications meeting each of those on paper, and every unit we track ships with an integrated heatsink sized for the bay.

We do not independently test PS5 compatibility unit by unit. Membership in our PS5-eligible catalogue is built against Sony's published list, and Fanxiang's advertised specification meets it - that is a statement about what the listing claims, not a benchmark result of ours.

What's actually inside, and the scope of that claim

ServeTheHome's teardown of the S660 4TB, published 1 October 2023, found a Phison PS5021-E21T controller, Micron 176-layer QLC NAND, and no DRAM cache - the drive relies on dynamic SLC caching instead. That is one tested unit at one date, not a guarantee about every unit sold under that name since.

We could not source the same detail for the S880R or S790R - Fanxiang's own site returned a DNS resolution failure on every rendered attempt this session, and no independent teardown of either exists that we could find. See our Fanxiang S660 page and the main Fanxiang brand page for the full sourcing table.

The warranty, and why we will not resolve the discrepancy for you

ServeTheHome recorded a 5-year term on the S660's box, paired with 2,800TBW endurance - but noted that term was not listed on Fanxiang's own website at review time. Separately, Trustpilot reviewers quote Fanxiang's own product-page wording as a range, '3-5 Year Warranty,' rather than a single figure, and several report the term actually enforced closer to three years.

We are not in a position to say which figure applies to a unit bought today. What we can say is that the published terms disagree with each other across every source we could read, so the warranty document for your specific model at time of purchase is the only authority that actually settles it.

The price, measured against the alternative

At every capacity where we hold live stock on both sides, Fanxiang's S660 costs less per GB than Samsung's 990 PRO and WD's Black SN850X - see our matched-capacity comparisons for the current figures, computed live rather than quoted here. That gap is real and it is the clearest, best-sourced fact on this page.

What the gap does not tell you is anything about failure rates, support responsiveness, or long-term reliability - none of our sources measure that, and we are not going to imply otherwise by omission.

The unfamiliar-brand flag, and what it does and doesn't mean

Fanxiang carries an unfamiliar-brand flag on every ranking page in our PS5 SSD cluster, applied by the same criterion to every brand: it is not on the list of manufacturers we recognise as established. That criterion is about name recognition on our list, not a finding about this specific company - some flagged brands turn out to be smaller manufacturers with no track record on our radar rather than anything more troubling, and we have no way to sort which from outside.

What the flag does is make sure a cheapest-first ranking does not quietly point a reader at the riskiest part of the market without saying so. What it does not do is substitute for the sourced facts this page and the Fanxiang brand page provide - a flag is a shortcut for a table row; the fuller picture is what you are reading now.

What we would tell a careful buyer, regardless of brand

None of this is specific to Fanxiang. Run a SMART read inside your return window before trusting any new drive - refurbished, budget or flagship - with anything you cannot afford to lose. Confirm the reported capacity matches what you paid for. And if the drive relies on SLC caching rather than a DRAM mapping cache, as the S660 does, expect sustained writes well beyond the cache to fall back to the NAND's native write rate - documented, expected behaviour for that architecture, not a fault to report.

How this verdict differs from a review

A review tests a unit and reports what happened to it. We have not tested a Fanxiang drive ourselves, and this page does not claim to have - everything above is either a live catalogue figure we compute, or a fact attributed to whoever published it, with a date attached. That is a narrower and more modest thing than a review, and it is deliberately so: a review's conclusions age the moment the reviewer's specific unit stops being representative, while a sourced fact with its provenance intact stays honest even as the underlying reality changes, because the page says plainly what it rests on and what it does not.

If you read only one thing on this page before deciding, make it the warranty section above - it is the one place where the sources genuinely disagree with each other, and no amount of price or specification comparison resolves that disagreement for you.

Every live figure on this page - the listings table, the price gap against Samsung and WD - is pulled from the same shared catalogue query the rest of our PS5 SSD cluster uses, not recalculated separately for this page. That is a deliberate choice: a page that computed its own version of a number already published elsewhere on the site risks drifting from it over time through nothing more than a stale query or a rounding difference, and a reader has no way to know which figure to trust when two pages disagree. Reusing the same function closes that gap by construction.