The Xbox Series X budget PCIe 4.0 SSD could be half the speed of the PS5

The new Microsoft Xbox Series X console, and the new Sony PlayStation 5, are going to be the first wee gaming boxes to ship with solid state drives as their main storage device. That could well be a literal game-changer for the next-gen consoles, and potentially a nightmare of weak-source PC ports. But despite reports that the PS5 is going to have an SSD with “raw bandwidth higher than any SSD available for PCs” it looks like the prototype Xbox Series X consoles will have very much last-gen SSD speeds. A LinkedIn post from a former Phison employee has detailed the SSD controller that was installed into the Xbox Scarlett, and it’s a chip that only supports sequential read/write speeds equivalent to a standard PCIe 3.0 NVMe drive. The Phison PS5019-E19T is a budget SSD controller that’s been designed specifically to connect over the PCIe 4.0 interface, doesn’t use a DRAM cache chip, and because it’s essentially been based on a PCIe 3.0 controller doesn’t have the performance we’d expect from a purestrain PCIe 4.0 device. Source :

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