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Noyb · 06-Oct-2009, 01:15 PM **#46**

Quote:

Originally Posted by Who's Me

..I wonder what it would take to let the smoke out of it.

More Fans and a 7V Sprinkler system would help

**JohnWill** · 06-Oct-2009, 03:59 PM **#47**

Quote:

Originally Posted by Noyb

It would make me very nervous to pull up on the 5V supply.
Supplies normally only source current .. Not sink it.
You're depending on the load on the 5V supply for sinking.

I would also be worried about motor transients back into the Computer supplies ...
Especially if they're going the wrong direction

Actually, connecting a pump with 100 MA or so current draw between 5V and 12V should have no ill effects on the P/S or the regulation.

Remember, we're talking about a P/S that's connected to a working system here, so it's obvious that is has a load on it, right? There will be plenty of 5V current draw to sink the small additional sink current needed for the pump.

I can't imagine this pump is going to inject more noise than all the switching regulators on the CPU supply on the MB, I think this is also a non-issue.

Noyb · 06-Oct-2009, 04:18 PM **#48**

I realize the load is more than sufficient to absorb the ~100ma ..
But nice fast fuse might be in order in case the 100ma changes it's mind

**JohnWill** · 06-Oct-2009, 06:43 PM **#49**

A fuse is never a bad idea.

Who's Me · 10-Oct-2009, 06:45 PM **#50**

I took the heatsink off of my Vid card to replace the factory compound with Arctic Silver and realized that the Waterblock I made for my old 8500gt would fit on it. So I installed that and ran Distributed.net client and FurMark for a couple of hours and stabilized at 47c CPU and 52c GPU. Took the fan off of the radiator for half an hour and both reached about 60c. Put the fan back on and returned to normal within 10 minutes. I am pretty confident that I have plenty of flow, so I don't see any need to up the voltage on the pump.

I am plugged in to 5v rail so I can't forget to turn it on, PC Probe will tell me if the pump fails, I don't have to worry about a relay failure, I no longer have a faulty 120v appliance submerged in water, And I even learned a few things so I guess this thread is solved.

Thank you everyone for your help!

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