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Xbox Series X’s SSD “Half the Speed” of PS5’s

A recent LinkedIn post from a former employee suggests that the new Xbox’s solid state drive may be only half the speed of the PlayStation 5’s.

The post came from a former employee of Phison, who claims that he designed the SSD controller to be used in the upcoming Xbox console. According to the post, the Xbox Series X will use a Phison PS5019-E19T, which has maximum sequential read speeds of 3.7 GB/s and write speeds of 3 GB/s:

Sony is planning to use a Samsung SSD and controller; if it is comparable to the new 980 Pro, it may have maximum sequential read speeds of over 6 GB/s. This is several dozen times faster that the PS4’s default 5400 RPM drive.

It remains to be seen whether the PS5’s faster SSD will give it much of a real-life advantage over the Xbox Series X.

Another recent post has possibly revealed the reason for the Xbox’s refrigerator-like size. Images of a prototype console suggest that it may have an internal power supply unit, negating the need for a power brick. The power supply would require extra cooling and better airflow, which is easier to achieve with a larger console:

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