Have the CPUbecome faster on newer NN3D

I have a NN3D bought in 2009. It´s a lot slower now, than when new, and it also came up with a pink screen here the other day. it started ok when restarted, but something tells me this is not a healthy sign.
Are there any way to upgrade the computer/ harddisk whit in the NN3D, or will a NN3D bought to day have a faster computer and larger HD than my 2009 model?

A NN3D purchased today is the same as when it released with exception that the original units had a 40GB map storage drive and the current units have 80GB. This will have absolutely nothing to do with speed since the operating system runs from solid state memory; not the hard drive. The larger industrial hard drive just gives more map storage. It sounds like your unit might have an internal fan or other issue that is causing problems. I recommend that you have your dealer or the service center evaluate the unit.