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First Watercooling Loop Advice Welcome

Last response: in Overclocking
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October 18, 2013 5:42:27 PM

Hi Folks,

I have been building my own machines for many years, however this is the first time I am looking at implementing a watercooling solution. I have been doing a little bit of Litecoin mining recently and picked up an AMD HD7990 since their price dropped a bunch for both gaming and mining. The problem is that while mining the temps on this thing are absolutely insane (94+ C) unless I leave the side of the case open with a box fan blowing on it. Since this also doubles as my gaming machine that is not an acceptable option. Instead, after looking in to how well watercooling is able to deal with the heat on these in particular I have decided to go that route.

I have read through all the sticky's etc., although one issue is a lot of the content is outdated and/or the references like skinnee's do not seem to exist anymore. I would like to keep the cost and complexity to a minimum while meeting my requirements. The basic requirements are watercooling the current CPU (i7-3770k), current GPU (AMD 7990) and possibly be able to deal with a second 7990 in the future. My case is a Cooler Master RC-692-KKN2, it does have holes for routing watercooling tubes out the back in the event I need to do external radiators or what have you so that is a plus. Overall I am thinking one of the easiest ways to do this would be to go with a kit, like the Swiftech H20-220 Ultima HD. So here is what I am thinking of getting:

Swiftech H20-220 Ultima HD
Komodo HD7900 (or the EK Radeon HD 7990 series)

This leaves me with a few questions. Anyone with experience using these kits, is there going to be enough fittings, tubing, etc. in there or should I be purchasing some additional to complete the loop? Also I was thinking I would prefer compression fittings to anything else to make sure it is secure, it does not seem to specify what type of fittings it comes with, does anyone know? Should I buy extra compression fittings or replacements just to be safe? Is the pump going to be strong enough if I decide to add a second 7990 into this loop, I think so given the D5 pump but my lack of experience here is key. Radiators is my biggest concern, the kit does not include very much, will it be sufficient for my hardware as it stands or should I get an additional radiator from the start? There also seems to be a consensus about not using any coolant other than distilled water, but if I end up using the EK waterblock for the GPU that is a nickel plated waterblock. That seems like I am then stuck without the ability to use a killcoil due to the combination of metals and the same problem comes with anti-bacterial additives for water, so how do I deal with this problem without using commercial coolants or are coolants better now and safe to use? Are there other considerations I have not gone through that I should be asking? Sorry to throw so much out there, I have tried to research it as much as I can, but I want to try to get it right the first time through.

Thanks!






October 18, 2013 9:20:17 PM

So is the Swiftech kit insufficient for what I am looking to do? Which XSPC kit would be better? I really would like to avoid an evaporative solution. I would like to have something that I can leave running and mining if I go on vacation for a week or two.
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a b K Overclocking
October 19, 2013 5:03:32 AM

oo..i haven't even looked in a while..
The Swiftech kit might be adequate..
Probably even the lowest xspc kit would be better..larger rads..etc..
but the Swiftech has a better pump..
I'd say Xspc 240-360 kit
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