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Importance of water cooling MOSFETS, NB, SB, etc?

post #1 of 18
Thread Starter 
Realistically, how important is it to cool other components of your motherboard--NB, SB, MOSFETS--when setting up a water cooling loop? Do these components get hot enough to hinder CPU/GPU overclocking in any way? It seems to me that the only downside to skipping them on the loop would be a few degrees Celsius penalty overall inside the case, at most.

I know that VRMs on video cards are plenty important to keep cool out of consideration for other components on the card, but are the extra mobo components just as important?
Edited by moonslug - 2/15/10 at 7:42pm
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post #2 of 18
Quote:
Originally Posted by moonslug View Post
Realistically, how important is it to cool other components of your motherboard--NB, SB, MOSFETS--when setting up a water cooling loop? Do these components get hot enough to hinder CPU/GPU overclocking in any way? It seems to me that the only downside to skipping them on the loop would be a few degrees Celsius penalty overall inside the case, at most.
From what I have heard, it is mostly for show. The temps can get pretty hot, but those components are made to be that hot. The only reason I can see going wc is if you have a fan on your northbridge that is just too loud or if your ocd and have to have all your temps as low as possible. Like me lol

EDIT: This is only for the x58 or p55 chipset however because the memory controller is on the cpu die. BUT, this does not apply for amd or older intel chipsets. Their memory controller is still on the northbridge and it can definitely hinder your oc results.
Edited by Behemoth777 - 2/15/10 at 7:47pm
post #3 of 18
i've blown a MOSFET on my cheap MSI board, so i'd say some cooling would help. cooling them would probably lengthen their life span assuming you're running your CPU with relatively high volts.

passively cooled mosfets are probably fine.
 
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post #4 of 18
Quote:
Originally Posted by ez12a View Post
i've blown a MOSFET on my cheap MSI board, so i'd say some cooling would help. cooling them would probably lengthen their life span assuming you're running your CPU with relatively high volts.
Heatsinks and case fans would be enough though. No need to really WC them too.

EDIT: seems I got caught in your edit loop.
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post #5 of 18
Put some of those little video card RAM heatsinks on your Mosfets if you are doing high overclocking.

If you are an insane watercooler than sure, the huge block for all that stuff will make everything really cool.
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post #6 of 18
Some kind of cooling on the mosfets is very important, and the same on the northbridge too. How much is the question.
In most cases, a simple heatsink with some decent case airflow is entirely sufficient.
If you're running a full watercooling rig, it's not that much hassle or expense to add a block to the NB and mosfets, plus it looks good too So, may as well eh?

My board has no mosfet cooling at all, and when I get a replacement, then a heatsink at least on the mosfets is a must in my book. Maybe it's time for some baby ramsinks until then?
    
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post #7 of 18
honestly, you dont really need to cool any other components, you can simply add fans to help keep temps lower. Adding blocks to mosfet or NB helps keep temps a lot lower than on air, especially when you do some serious overclocking. I have my mosfet water cooled and compared to my temps on air its a huge difference!!! My step-sons rig has a cpu and nb water cooled. I'm never worried about nb temps. I can add some serious voltage to it and it doesn't even phase it. If your gonna do some serious overclocking then i would suggest cooling your other motherboard parts but if its only mild I'd suggest adding small fans or after market air coolers. Anyhow I hope I helped.
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post #8 of 18
Thread Starter 
It seems to be the general consensus that the hot little MOSFETS can cool out on air. Glad to know that WCing them isn't necessary--but BlackHoleSon has it nailed I think, and when I order my mobo I'll be sure to set some passive heatsinks on all the important chips
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post #9 of 18
That depends entirely on your board and how you are using it. Most of the time it is not needed, but if you are doing serious overclocking and/or your board doesn't come with good cooling, then additional cooling can definitely help. You can either do this with more fans, or WC, with watercooling being quieter, better looking (imo) and probably more effective, but also more expensive.
    
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post #10 of 18
I have a Evga 790i FTW board. the Stock heat pipes and the little fan on them for the NB, SB, and fets the hottest temp I saw on them was around 70C with the little fan pegged out.

I installed a bitspower black freezer block on the NB&SB, all in one unit. I dont even see anything over 38C now!

Since the chipsets and mosfets are all on one heat pipe thing stock, I also threw 2 blocks on the fets for the heck of it.

WC'd my chipset cut temps almost in half. I would say its worth it.
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