Exactly what it says on the tin. This should explain the behavior in plugins like rinCheat or Better Amphetamin Plugin, where on certain games it doesn't let you go beyond 166mhz on the GPU or show any significant CPU gains beyond 333mhz. (Atleast, this was the case for my Vita 2000)
Why exactly its working like this, I have no idea. Reboot your Vita and test it for youself:
http://stary2001.co.uk/henkakuv2/
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