Tossing in a third-party 1TB SSD costs you $1,800 versus $2,199 from Microsoft.Ī faster SSD is less of a reason to upgrade and should be seen as a side benefit. It even works if you want that entry-level i7/16GB/256GB model ($1,599). If you want Microsoft to preconfigure your 1TB option, you need to drop $2,199. Indeed, you could buy the 128GB Surface Pro 8 ($1,099) and, for less than $200, get to 1TB if you upgrade it yourself. You bought a Surface Pro 8 with 128 or 256GB of storage, and you want more. There are two reasons to consider, with the first being the most obvious: Before we begin, let us discuss why you want to upgrade the internal storage to Surface Pro 8.