i am running a new 300 watt power supply for my mobo, one fan, and one cdrom. i also have a old 90 watt supply running two hard drives, a cd-rw, the floppy (who ever uses one anyway), and a total of 6 12 volt fans. most ventilate the case. there is one drawing fresh air in over the hard drives and under the cd roms straight at the prossessor fan. they are both case size fans and pull some air, i have constructed a duct between the one cooling the heatsink and front and back sides of the slot one card my pIII 800e coppermine is on. that fan is fed air from the one between the drives fresh from the front side of the case. this way i don't stress either power supply real hard and my processor runs at idle at an unbelievable 71F and rarely gets over 105F for more than a second. the only problem i have is cold starts, it takes 2-4 boots to get her running. there are other fans pointed directly at the mobo, so i guess i am cooling those all important capacitors too much. you power supply guru's see any harm in this? for the smaller psu i have a switch mounted on the front and a LED that lets me know the fans are on and the switch allows me to shut down the second PSU when i power the rest of the computer down.
this way my computer isn't collecting dust all the time. i have run this setup for some time now with no problems. as long as i first turn on the secondary PSU first i dont have to worry about burning out a chip. i don't see why folks don't do this more often, espescially if they run a pelteir. they can isolate the neutral grounds on two PSUs and run the +12v and the +5v in series to get +17v or run the two 12+ together to double the amperage. this can be a handy trick for those who want to power those power hungry cooling systems on the cheap.
whatcha think? any improvements necessary or is this setup fine the way it is? i got the idea to run them in parrallel from another website. i have run subwoofers in series, and even series parrallel to lower the ohms down into to 4 ohm territory, sometimes down to 1 ohm to get the amp to push more amps thru my subs. they must be rated to be stable at 4 ohms, or in some instances lower. most folks don't run 1 ohm across a bridged amp, but it works and works well. it's what we call a "cheater" amp. if it can be done with a system pumping 94 amps thru some subwoofers, surely it will work with a couple of cheap PSU's. (if done correctly). that sound system i had at 94 amps was pumping a true 800 watts of bass into two 15 inch kevlar coned speakers (or drivers for those of us in the buisiness).
well i guess i just wrote a book, so i will let you go, give me some feedback. wisdom.