Quote: Originally Posted by
reddeath30 
P4 here, and the only problem I have is that the engine has to be running or the power inverter wont allow the computer to boot up. The question was obviously a p3 or a p4. If it were between the 2, I would get the p4 for more power. Most front ends here are very graphics intense and the faster system the better. P3 will run nominally but a p4 will run crisp.
Well I actually disagree with the "frontends are graphic intensive". Many people including myself run on via boards with onboard video and the processing equivalent of less than a P3 700Mhz. I use RoadRunner and I have used some moderate flash skins and it works just fine. Screens load fast, and video is awesome. GPS works fine, and everything else including SNES/N64 emulators.
The P3 is more powerful than the via chips but of course power hungry. The P4's are known for their horrific efficiency. They are the
worst chips in terms of power used to processing power ratio. I have four P4 powered systems alone in my house and they are great chips, but they are waaaaaay overkill for a car environment. And in climates where heat may be a problem, they are almost disregarded immediately.