“You missed the point Stoney, the external SSD expansion card, is a direct replicate of the internal SSD.”
I didn’t miss the point, nor was I arguing that it directly replicates the internal SSD speeds… The whole point of a flash controller is to be able to manage the throughput of the storage which I will explain below.
“And your source says the internal SSD is capable of 3.938GB/S max throughput? bit more than the advertised 2.4GB/S right?”
“Max” throughput meaning thats its peak and rarely ever sits at that speed consistently. MS could easily have a cap limiting the maximum throughput to allow the expansion cards to also exceed those speeds but capping at a stable matching speed. Which is how MS can state that they perform identical like you had quoted.
“Same tech, different brand. And it is actually “M.2 2230 NVMe SSD manufactured by Western Digital.”
No, M.2 2230 NVME is the storage platforms physical dimension (22mm wide + 30mm long) and has nothing to do with what components are used for the SSD technology lol.
https://venturebeat.com/202…
This link shows that the expansion card uses SK Hynix NAND. While the Internal SSD uses TLC SanDisk NAND memory as shown in the link in my previous comment.
So while they replicate to the same speed, they still are not “exactly the same.”
Edit:
“Yes, the Xbox Series X’s internal SSD is indeed custom, and it is a PCIe 4.0 enabled drive. We apologize for publishing wrong information and for any issues or confusion this has caused.”
They were only incorrect about saying its PCI 3.0 and instead its customized for PCI 4.0.


