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exdeath on 03 June 2015
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AnthonyW86 said:
Hynad said:


Simple. The data that needs to be accessed is too big for the bandwidth speed of the blu-ray drive. So installing the game on HDD makes up for this.


This is nonsense, PS4's Blu-Ray drive is 3 times faster than that of the PS3. PS4's Blu-Ray can reach a speed of over 200 Mbps. That is actually sufficient for most of the data. Much faster than a external USB 2.0 hard drive for example, though a little slower than a USB 3.0 hard drive that can be used to install games for Xbox One.(might be interesting to test a few slower external hard drives to see what minimum speed is needed to run games without problems).

 

It's just easier for developers to simply copy all that data to the hard drive instead of having to optimize for reading data of the disc.

Seek time and random access.  The moment the heads have to move your transfer rate plummets to kilobytes per second as it spends more time changing tracks and waiting for the sector to come around than it takes to read the data.