Upgrade Steam Deck & Ally storage for $0.13/GB

Emma James 10/08/2026

Featured image Upgrade Steam Deck Ally storage for 013GB

When storage shortages hit the market, finding high-performance components often feels like an impossible quest. Yet, amidst the scramble for internal space, a serious contender has emerged for gamers and mobile tinkerers: the WD Black SN770M 2TB SSD.

This drive isn’t just another piece of storage; it’s a crucial piece of hardware that solves a major bottleneck for portable gaming devices. Priced at $259.99, it has seen a dramatic drop from its original launch price, offering phenomenal value for those needing a high-speed solution.

The SN770M shines thanks to its M.2 2230 form factor, a format perfectly suited for compact devices like the Steam Deck, the ROG Ally, the Legion Go, and various handheld gaming claws. This compatibility makes it an ideal upgrade for anyone looking to expand the internal storage of their portable setup.

Under the hood, the drive delivers serious performance. Operating on the PCIe 4.0 interface, the SN770M boasts sequential read speeds up to 5,150 MB/s and write speeds up to 4,850 MB/s. These blistering speeds ensure that loading games and assets is instantaneous, pushing the boundaries of what portable systems can handle.

While some newer drives exist, the SN770M strikes a masterful balance between cutting-edge performance and accessibility. For systems like the Steam Deck, which relies on PCIe 3.0 technology, the SN770M provides more than enough speed without being excessive overkill.

Even as newer, faster models are introduced, like the Optimus GX 7100M, this SSD remains a highly viable and cost-effective choice. It proves that excellent performance doesn’t require the highest price tag, especially when you are optimizing for mobile gaming.

This deal represents an incredible opportunity: obtaining a top-tier, high-performance M.2 drive at a fraction of the original retail cost. For gamers currently running low on internal storage, the WD Black SN770M isn’t just a purchase; it’s a smart investment in maximizing gaming potential right now.