fanxiang S660 4TB PCIe 4.0 NVMe SSD with Heatsink: specs and who it suits

The fanxiang S660 is an internal M.2 solid-state drive that uses the NVMe protocol over a PCIe 4.0 connection. The model covered here holds 4TB and ships with a heatsink. The brand positions it as storage expansion for the PS5, and it says the drive also works in PCs and other platforms.

What PCIe 4.0 and NVMe mean

NVMe is a protocol designed for flash storage that talks directly to the processor over PCIe lanes, which is why it is much faster than older SATA drives. PCIe 4.0 doubles the per-lane data rate of PCIe 3.0. fanxiang lists speeds of up to 5000MB/s, which is the sort of throughput that suits game loading and large file transfers. As with every drive, quoted speeds are best-case figures, and sustained performance depends on the host system and the workload.

SLC cache

The listing mentions an SLC cache. This is a common technique in which part of the flash is used in a faster single-bit mode to absorb writes. Short bursts of data go quickly, but very long writes may slow down once the cache is full. For gaming, where most activity is reading, this is rarely noticeable.

Capacity

fanxiang says the S660 comes in capacities from 500GB to 4TB. Modern games can take up tens or hundreds of gigabytes each, so a 4TB drive can hold a large library without constant deleting and re-downloading.

Why the heatsink matters

Fast NVMe drives can run hot during long transfers and may reduce their speed to protect themselves. The brand says the heatsink helps keep temperatures low during prolonged use. Consoles often require a heatsink or one that fits inside the drive bay, so the fit is important.

Use with PS5 and PC

The brand states the drive is compatible with the PS5 and also connects to a PC. In general, a PS5 expansion slot needs a PCIe Gen4 M.2 drive of a specific size and speed, and extra height from a heatsink must stay within the slot's limits. Check Sony's current guidance on supported drives before installing. In a PC, you need a free M.2 slot that supports NVMe.

The drive itself is slim: the listing gives 0.3 inches thick and about 0.2 lb in weight.

Warranty

fanxiang advertises a five-year quality guarantee and an after-sales support team. Terms vary by region, so read the actual conditions.

Who it suits

It suits console owners and PC users who want a large, fast internal drive for games, media or work files.

What to check before you buy

• Console compatibility: confirm the drive meets the requirements in your console's manual, including the heatsink height.
• PC slot: check that your motherboard has an M.2 slot with NVMe support, and whether it already has a heatsink.
• Installation: follow the system's instructions and handle the drive carefully.
• Backups: keep important data backed up, as with any storage device.

The short version

• A 4TB PCIe 4.0 NVMe M.2 SSD with a heatsink.
• Listed at up to 5000MB/s and available from 500GB to 4TB.
• Designed for PS5 storage expansion and also usable in PCs.
• Includes an SLC cache and a five-year guarantee, according to fanxiang.

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