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The ADATA XPG GAMMIX S55 1TB NVMe PCIe Gen4 x4 M.2 SSD reads at up to 5,000MB/s and writes at 3,700MB/s, which is what shortens game and application load times. It is a significant upgrade for gaming consoles, the Steam Deck and Microsoft Surface devices, and it is engineered to take the rigours of gaming without overheating.

The ADATA XPG GAMMIX S55 1TB NVMe PCIe Gen4 x4 M.2 SSD reads at up to 5,000MB/s and writes at 3,700MB/s, which is what shortens game and application load times. It is a significant upgrade for gaming consoles, the Steam Deck and Microsoft Surface devices, and it is engineered to take the rigours of gaming without overheating.
The 1TB capacity is what most buyers are here for: enough room to keep several large games installed at once instead of removing one to make space for the next, with files still reachable at Gen4 speeds. ADATA layers data protection technology on top, so the drive is built for sustained gaming loads rather than occasional bursts.
The 1TB capacity is what most buyers are here for: enough room to keep several large games installed at once instead of removing one to make space for the next, with files still reachable at Gen4 speeds. ADATA layers data protection technology on top, so the drive is built for sustained gaming loads rather than occasional bursts.

The GAMMIX S55 uses a mainstream PCIe Gen4 x4 interface compliant with the NVMe 1.4 standard, and it supports the latest Intel and AMD platforms. Sticking to the mainstream interface rather than a niche one is why it drops into current systems on either side and improves mobile productivity without a compatibility hunt first.

The GAMMIX S55 uses a mainstream PCIe Gen4 x4 interface compliant with the NVMe 1.4 standard, and it supports the latest Intel and AMD platforms. Sticking to the mainstream interface rather than a niche one is why it drops into current systems on either side and improves mobile productivity without a compatibility hunt first.

Sequential read and write speeds of 5,000MB/s and 3,700MB/s make the GAMMIX S55 three times faster than a standard PCIe Gen3 SSD, while it stays fully backward compatible with PCIe 3.0 platforms. A Gen3 machine still takes the drive and runs it at what that platform can carry, so the same SSD can move to a newer system later.
Sequential read and write speeds of 5,000MB/s and 3,700MB/s make the GAMMIX S55 three times faster than a standard PCIe Gen3 SSD, while it stays fully backward compatible with PCIe 3.0 platforms. A Gen3 machine still takes the drive and runs it at what that platform can carry, so the same SSD can move to a newer system later.

The GAMMIX S55 uses the M.2 2230 form factor, the short card that installs in limited-space enclosures such as mini laptops, handheld gaming consoles and tablets. It can replace the SSD already fitted in a handheld to significantly raise storage capacity, which is the usual reason a 2230 drive gets bought in the first place.
The GAMMIX S55 uses the M.2 2230 form factor, the short card that installs in limited-space enclosures such as mini laptops, handheld gaming consoles and tablets. It can replace the SSD already fitted in a handheld to significantly raise storage capacity, which is the usual reason a 2230 drive gets bought in the first place.

Confirm that the system accepts M.2 2230 solid-state drives before making a purchase, since not every M.2 slot is cut for the short 2230 card. ADATA also notes that actual speeds vary based on the software and hardware configuration of individual testing platforms, so the quoted figures describe a ceiling rather than a guarantee.

Confirm that the system accepts M.2 2230 solid-state drives before making a purchase, since not every M.2 slot is cut for the short 2230 card. ADATA also notes that actual speeds vary based on the software and hardware configuration of individual testing platforms, so the quoted figures describe a ceiling rather than a guarantee.

3D NAND flash technology carries the GAMMIX S55 range, which offers storage of up to 2TB along with numerous data protection and correction features. ADATA has significantly enhanced the drive's TBW (Total Bytes Written) endurance and durability to meet high-capacity storage demands, and TBW is the figure that shows how much writing a drive is built to absorb.
3D NAND flash technology carries the GAMMIX S55 range, which offers storage of up to 2TB along with numerous data protection and correction features. ADATA has significantly enhanced the drive's TBW (Total Bytes Written) endurance and durability to meet high-capacity storage demands, and TBW is the figure that shows how much writing a drive is built to absorb.


An SLC cache algorithm, Host Memory Buffer and LDPC (Low-Density Parity Check) error correction work together on the GAMMIX S55 to boost system load times, data caching and stability during data transmission. Together they cover speed and reliability at the same time rather than trading one against the other as the drive fills up.

An SLC cache algorithm, Host Memory Buffer and LDPC (Low-Density Parity Check) error correction work together on the GAMMIX S55 to boost system load times, data caching and stability during data transmission. Together they cover speed and reliability at the same time rather than trading one against the other as the drive fills up.

SSD Toolbox keeps the drive's firmware updated and reads S.M.A.R.T. attributes to report health status, remaining lifespan, current temperature and storage capacity in real time. Watching wear and temperature matters most in a handheld or mini laptop, where the drive works inside a tight enclosure with little room for heat to escape.
SSD Toolbox keeps the drive's firmware updated and reads S.M.A.R.T. attributes to report health status, remaining lifespan, current temperature and storage capacity in real time. Watching wear and temperature matters most in a handheld or mini laptop, where the drive works inside a tight enclosure with little room for heat to escape.

Everything you need to know about this product
This listing is the 1TB version of the XPG GAMMIX S55.
It reaches sequential read speeds of up to 5,000MB/s and write speeds of 3,700MB/s.
It uses a PCIe Gen4 x4 interface compliant with the NVMe 1.4 standard.
It uses the compact M.2 2230 form factor.
ADATA lists the Steam Deck as a supported upgrade, alongside gaming consoles and Microsoft Surface devices.
Yes, the drive maintains full backward compatibility with PCIe 3.0 platforms.
ADATA rates it at three times faster than standard PCIe Gen3 SSDs.
It is equipped with 3D NAND flash technology.
It uses LDPC (Low-Density Parity Check) error correction alongside an SLC cache algorithm and Host Memory Buffer.
Yes, SSD Toolbox uses S.M.A.R.T. to track health, remaining lifespan, temperature and capacity in real time.
It fits mini laptops, handheld gaming consoles and tablets that accept M.2 2230 drives.
It supports the latest Intel and AMD platforms.
AI-Generated Content: These FAQs are generated by an automated AI system and may contain inaccuracies or omissions. Evetech makes no warranties, express or implied, regarding their completeness or reliability. For definitive information, please refer to the manufacturer's official specifications.









Please Note: Product images are for illustrative purposes only and may differ from the actual product.
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