Transcend’s ESD220C SSD, for example, has a write speed of 400MB/s – which, while relatively quick, meant there was no major difference using it on the PS4 over the other drives, bar a few seconds shaved off loading times.
What’s the outcome? Across all the drives we tested, the speed difference was marginal at best – likely because each had to channel through the USB 3.0 interface in order to talk to the PS4. The difference, though, is that USB controllers can slow things down a lot – far more noticeably than any differences in drive speed itself. In theory, USB 3.0 has a top transfer speed of 5Gbps, where SATA III (used by most internal hard drives) offers 6Gbps, which isn’t a huge gulf. Here, though, the quandry of USB 3.0 comes into play. Using a tiny solid-state drive as your PS4’s external expansion solution seems the obvious choice: not only are the drives properly pocketable, they’re also, in theory, much faster than traditional hard drives.
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