Is a Fanxiang 4TB SSD Enough for GTA 6?

What we know, and what we don't

Rockstar has not published an official installed file size for GTA 6 as of this page's freshness date. Any specific gigabyte figure circulating online ahead of release is a guess, sourced or not, and we are not going to repeat one here dressed up as a fact.

What we can source is the platform requirement and the product: Sony's PS5 M.2 expansion specification, and Fanxiang's advertised S660 specification against it. Recent open-world titles at this scale have run from the high tens of gigabytes to over 100GB, which gives a sense of scale without pretending to be a GTA 6-specific number.

What 4TB actually buys you

A 4TB drive holds roughly 4,000GB before formatting overhead and system reservations. Even a generously-sized single title in the 150-200GB range leaves the overwhelming majority of that capacity for the rest of a library. The practical question is rarely whether one game fits - it is whether your current library, plus the new title, plus headroom for updates, fits without you managing storage weekly.

Our PS5 storage calculator lets you model your own library against a specific capacity rather than relying on a single blanket number for every buyer's situation.

It is also worth remembering that GTA 6 will not be the only large title competing for space over the life of the drive - platform-holder patches, day-one updates and whatever ships alongside it in the following year all draw from the same pool. A 4TB purchase sized around one title in isolation tends to look smaller in hindsight than it did on the day of purchase, which is a reason to plan around your library's trajectory rather than a single release.

The drive itself

Fanxiang's S660 4TB meets Sony's PS5 M.2 requirement on its advertised specification - PCIe Gen4 x4 NVMe, a stated 5,000MB/s+ sequential read, and an integrated heatsink sized for the console's bay. ServeTheHome's teardown of this model found a Phison PS5021-E21T controller, Micron 176-layer QLC NAND, and no DRAM cache, relying on dynamic SLC caching instead - one tested unit at one date, not a claim about every unit sold since.

At the 4TB capacity specifically, our live comparison shows the S660 costing less per GB than Samsung's 990 PRO and WD's Black SN850X - see the matched-capacity figures on those pages rather than a number repeated here, since it moves.

What the SLC cache means for a large, one-time install

A GTA 6-sized install is exactly the sustained-write workload where the S660's cache design is worth understanding before you buy, not after. Because the drive carries no DRAM mapping cache and instead uses dynamic SLC caching - a portion of the NAND itself run in a higher-write-throughput mode as a buffer - a write large enough to exceed that buffer will fall back to the NAND's native write rate partway through. That is documented, expected behaviour for this class of drive, not specific to Fanxiang and not a defect; see our DRAM cache vs DRAM-less explainer for the vendor-sourced mechanics.

In practice, a single-title install proceeding at the NAND's native sustained write rate for part of the transfer is unlikely to be the deciding factor for most buyers - the install still finishes, just not necessarily at the drive's peak advertised figure for the entire transfer. We are not measuring or predicting a specific completion time here; we are telling you the mechanism exists so you are not surprised by it.

Warranty, if you're buying ahead of a specific release date

Buying storage ahead of a single anticipated title means living with the warranty term for longer before you know whether the purchase mattered. ServeTheHome recorded a 5-year term on the S660's box, with 2,800TBW endurance at 4TB specifically - but noted that term was not corroborated on Fanxiang's own website at review time, and Trustpilot reviewers separately quote Fanxiang's product pages as advertising a '3-5 Year Warranty' range rather than a flat figure. Keep your purchase record regardless of which term ultimately applies to your unit.

Why we won't guess GTA 6's install size

It would be easy to write a more decisive-sounding page by picking a number - 150GB, 200GB, whatever a forum thread happens to be repeating this week - and building the rest of the answer around it. We are not going to do that. A guessed figure dressed up as a published fact is exactly what this page refuses to do, and it would not even change the practical conclusion much: at 4TB, the difference between a 100GB install and a 250GB one is a rounding error against roughly 4,000GB of usable capacity.

What would change the calculus is a buyer with an unusually large existing library already close to full - and that is precisely the case our PS5 storage calculator is built to handle, because it asks about your actual library rather than assuming a generic one.

The live listings, from the same source as the rest of our PS5 cluster

The table above pulls the same live Fanxiang catalogue query used on our Fanxiang PS5 cluster page and the Fanxiang brand page - not a separate calculation built for this page specifically. If a price or a stock state looks different here from what you see elsewhere on the site, that would be a genuine discrepancy worth reporting rather than an expected difference in methodology, because there is only one methodology behind all three.