Hi!
I've asked this question about 1-2 years ago, got lots of replys, thanks :D
So, here is what I'm trying to do: use two power supplys on one computer, one for the motherboard and anything connected to it and second for the cooling system (15 fans).
Since second PS really has nothing to do with the computer itself, someone suggested me just short green and black wires, and let it work all the time. That worked for me, was using it for a year now, but then I desided to try out something else:
I connected green wires on both PS...And it worked great! When I power up or shut down my PC both PS starts, very nice. The only side effect is when I unplug power from one PS, second start working, but that's not a big deal at all.
So, now is my question:
will this method do any damage, or any other harm to the hardware?

Thanks!

You'll need a BigA$$ computer case with 15 fans and two power supplies.....

15-Fans???

Use one of the online power supply calculators & see how much power you really need!

But no, it shouldnt be a problem as long as you still have a little room inside to move the air to all the right spots!

15 fans???

Does your air conditioner fit in that case??

808

Without seeing schematics of the supplies, it's kind of hard to answer that question. If the green wire is only a active hi/low switch to turn on the PS, it quite possibly will not cause any damage. However, an added PS may have some sort of current draw effect on the 2 PS which could effect other hardware due to improper current. What do you need so many fans for anyways? If you have that many heat issues, there may be other problems. Or there is an alternative using water cooling. Bottom line question would be "is it worth the risk?"

When all else fails, beat the %*#$! out of it!!!

Fifteen fans??? Even so, fans only draw about 2-3 watts each. Seems that using an extra power supply for them is not really necessary.

well, see, having 6 hard drives and live withour air conditioner where temperature in the house during the summer go up to 100F (38C)...
Even though I have 500WT PS (450WT second one), it still only has 6 connectors (can u belive that? its a BS!) So, I dont think even 500W could properly handle motherboard + 6 HDs + 3 CDRW + Video card (required an external power) + 6-8 external pereferials on USB ports + 1-2 on FireWare + 15 fans...kind of a load for one PS...
or maybe I should just stuck my comp into a refregerator...lol
but as long as it wont do any harm to my hardware I'm happy with it ring now :D

Thanks for the responses ;)

It doesn't hurt mine...I use an old AT psu to power fans so I can turn them off for temp testing purposes.

Skip

V@no, just curious (if you would). What do you use such a beast for? I'm intrigued. It seems like it would be easier to have 2 computers networked together and use water cooling instead of fans (especially when you get toasty without air conditioning)

When all else fails, beat the %*#$! out of it!!!

I just like have everything be easy to reach and avalable all the time, without delay :)
besides, good quality is always healthier ;)