How much Ram on 32 bit System?

[Rif]

"Could fumefx 32 bit render *.fxd files that were calculated on fumefx 64 bit on a 64 bit system?"

The answer is Yes it can do that as fxd is external file , you just need to load it from the cache output on a new grid in you r 32 bit max and send it to your 32 bit farm that new file pointing to the caches that where calculated on 64 bit.. ..

Woody is right about the limitation of 32 bit os \ apps .. a 32 bit machine with 4 gig of ram and the 3gig switch on will swap over 2.5 gig or so from max if i remember right .. this is i think the worse setup personnally as i sa max8 craching alot over 2 gig even with the 3gig switch cause of the app itself not done for more or such..

Best setup is xp64 with max 9 64 bit .. Now in comperasion , if you run xp64 with max 8 sp3 , you will be better than xp32 bit with max 8 as now the os itself allows for ram allocation to be more than 2 gig per apps ..

After more infos from kresimir , i learned that its actually about 1 /3 of the Total Sim amount that you need to have to render a file.. witch means if you sim took 9 gig of ram to render on ur 64 bit , you should plan at the min 3 gig of ram from the render to be able to render that file .. Now 3 gig of ram means that it needs to be able to load the 3 gig , witch means xp64 + max 8 sp3 at the MInimum.. i would still suggest about half of the ram simed amount for render as you ll probably wanna render gi , Ao , render elements and extract the whole thing in passes or such ..