well i had a celly at 950 mhz and i upgraded to a p3 that i have at 1240 mhz. yea there is a big difference. the 1.1 is oem only so there is no warrenty on the chip after 30 days or something. my p3 is the 1000E cdo (100fsb) which came out at about the same time as the 1.1.
now if your 800 was an E chip (100fsb) and you go to the 1.1 then there is a big difference. now if you have a 800 EB (133fsb) the difference will still be big but not as much so.
now if your 800 was an E chip (100fsb) and you go to the 1.1 then there is a big difference. now if you have a 800 EB (133fsb) the difference will still be big but not as much so.