Join Date: Jan 2008
Location: Virginia Beach, VA
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PS4 Uses a SATA-III Controller Per tech Dos released to Devs.
However the System only Uses SATA MODE-2 (3GBps) with the Standard 5400RPM Drive it ships with.
Whether or not is uses SATA-2 or SATA-3 with a SATA-3 Drive/SSD is another Story,
SSDs will have Lower Performance due to lack of any TRIM or Alignment Systems.
Whether or not an External SSD on Xbox one will have this issue is unknown, as the Storage system is Governed by the Windows 8 Kernel,
However External Storage is not yet Enabled due to "Scheduling Error", along with several other features.
Both Systems use the same SATA-IIII 6Gbps Controller Built into the APU's Architecture