HiAs we know FS9 only uses one core of a dual core processer, even if I have both on by default. Given this fact would the best PC for playing FS2004 be a singhle core, like a Intel

Hi,Go for dual/quad core. Even though you might not benefit much from it in FS9 (only slightly by other processes), FSX supports up to 4 cores.Also other games and applications may/will benefit from dual/quad core processors.Basically it's a no brainer as far as I'm concerned.

dual core definitely. fs9 may not take advantage of the second processor, but the CORE architecture is a faster and more efficient architecture, Period. Do not buy a p4 processor

Well, you might be able to improve FS9 a bit more with a dual/quad core if you use other programs like ActiveSky, FS Flightkeeper, and other FS addons that have external programs running outside FS... By forcing the external addons to run on a separate core from FS9, those apps won't be taking cpu time away from FS9... :)

thanks for the input, I already am running on a E6400, 2G RAM,ASUS P5BW-LA mATM, 7600GT 1400X900X32. I find at heathrow EGLL, fps is lowest at around 44, on loading LDS767 down to 31 (2D cockpit). This without any anti.. anything on, no changes to FS9.cfg (all the changes I have read about never seem to do anything and maybe a little negative. All display setting for me is HIGH and traffic set to 80%.It is good, I can lock fps at 30 and fly anywhere no issues only a few stutters at ground at heathrow.From what I read, people are having things maxed out, put anti.. everything on, use traffic add-on s/w, other s/w and at around 30 fps. I have 2 options, upgrade my compaq PC : change 300W psu for a 430/500w, change gpu to 7950GT at see.Else start again and built a totally new gaming PC.But then I have also seen there poeple with top of the range PC's having very poor fps, < 10fps!!!, so it all is confusing, but I think dual core is the way to go.It is just given what I read, people think FS9 is more CPU dependant than GPU.regardskrishan

I don't know how, but there is a hack to use dual core in FS9.