P4 working very good. I got rid of my reboots by doing a clean install and being careful what I restored with TIBU. You have to watch your system folder to make sure it has free space tho. Some people are deleting the contents of the system\video folder. (I have 20 mb free.) They're asking Green to make an acme4 installer that makes the system folder bigger. (My GN has a 640 mb system folder, yet acme 3 increases it to only 400 mb.)
Last I heard you could get a GN for a penny (or aren't you up for an upgrade)?