Plan for 170 GB of available space. That is the published PC requirement for FINAL FANTASY XVI on Steam, not a separately measured Steam Deck install size. Steam also says an SSD is required, so check the free space on the drive you intend to use before installing.
What is the official storage requirement?
Steam lists 170 GB of available space for both the minimum and recommended PC requirements, and its Additional Notes say “SSD required.” Square Enix’s official PC requirements page likewise specifies “170 GB or more” and an SSD. Steam’s FINAL FANTASY XVI listing and Square Enix’s PC requirements do not publish a separate Steam Deck install-size figure.
Will it fit on your Steam Deck?
That depends on your Deck’s remaining free space, not only its advertised capacity. Valve currently lists Steam Deck models with 512 GB and 1 TB NVMe SSDs, along with a high-speed microSD slot. The 170 GB figure is a free-space requirement; it should not be mistaken for the Deck’s total storage capacity or a measured final footprint after installation.
| Storage figure or option | What it tells you |
|---|---|
| 170 GB available space | Steam’s published PC requirement for both minimum and recommended specifications; Square Enix says 170 GB or more. |
| 512 GB or 1 TB NVMe SSD | Valve-listed Steam Deck internal storage configurations; usable free space varies with what is already on the device. |
| High-speed microSD slot | Valve documents support for UHS-I SD, SDXC, and SDHC cards. The game’s listing still says an SSD is required. |
Valve’s Steam Deck technical specifications identify the internal SSD options and microSD support. Neither Valve nor the game’s official PC requirements page establishes that installing FINAL FANTASY XVI to microSD satisfies the game’s SSD requirement or guarantees particular performance.
#1 Best Overall
- Broad Compatibility: Works with Steam Deck, ROG Ally, Microsoft Surface, and select Dell laptops for easy portable upgrades
- PCIe 4.0 Performance: Delivers up to 7,100MB/s read and 6,000MB/s write speeds for quicker game load times, bootups, and smooth multitasking
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How to check your available storage
- On the Deck, open Settings.
- Select Storage to review the available space on internal storage and any installed microSD card.
- Confirm that the drive you plan to use has at least 170 GB free before starting the installation. If it does not, remove or move other content, or choose a different storage location with sufficient free space.
What the 170 GB figure does not tell you
It is a published PC requirement, not a Steam Deck-specific measurement. The official pages reviewed do not state the game’s Deck install footprint, download size, how much extra space updates may require, or microSD-specific performance. Leave yourself room beyond the stated requirement if you want space for other games or updates, but no official extra-space amount is specified.
Quick Recap
Rank #3
- Top choice for STEAM Deck capacity upgrade. Top choice for capacity upgrade on lightweight devices
- Small-size and High Performance 22x30mm small form factor with sequential read/write speeds up to 5,000 / 3,500 MB/s
- Heat dissipating graphene label for enhanced heat dissipation and system operating stability.
- Gen4 read/write speed compatible with PCIe Gen3 interface
- Small-size solution offering TB-grade massive capacity.
Rank #2
- [Available Everywhere]: The FX953 M.2 2230 SSD can be used on almost any device with an M.2 interface because it is small enough. It is compatible with handheld computers such as STEAM DECK and ASUS ROG Ally, and you can also use it to expand ultra-thin laptops such as Microsoft Surface Pro.
- [More Powerful]: The FX953 M2 2230 SSD 1TB uses the PCIe Gen4 protocol, and its maximum sequential read and write speeds can reach 5000MB/s and 3100MB/s, which is more than twice the speed of PCIe 3.0 NVMe SSD, so you can enjoy the game more easily.
- [Better Heat Dissipation]: The FX953 1TB 2230 NVMe SSD is covered with an all-in-one graphite heat dissipation sticker, which can be used as an ultra-thin heat sink. During use, it can effectively reduce the heat of the SSD and improve system performance and stability.
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