Help with a waterloop

[shiftlocked]

Hi all,

I've just had an idea to watercool a sli setup for a mate of mine. Ive never really done more than a single loop with doing just the cpu and northbridge.

Loop 1

CPU - Res

Loop 2

Northbridge - Res

Loop 2

Graphics card 1 - Graphics card 2 - Moffset 1 - Moffset 2 - Res

Am I on the right tracks here? Parts that im thinking of using for this kit

Alphacool Set 12 volt Cora 662 XP - Passive cooler

Laing DCC pump with small plexi top

2 x alphacool 7800 coolers

2 x mofset coolers

NexXxos northrbridge cooler

NexXxos XP lite cpu cooer

2 Issues I think that there might be is the flow rate and enough passive cooling to get the job done. I could add some more coras to it or use this kit link

Anyone out there got a watercooled sli setup?

 

[JN]

Personally if i was cooling all of that i'd go for 2 pumps. That DDC is gonna struggle.

EDIT: What rad are you gonna use too. Its gonna need to be a big'n, that SLI+mosfet loops is gonna kick out some major heat.

EDIT2: A passive rad....think again!

 

[FarFarAway]

Yeah your gonna need more than one actively cooled 240mm Rad for all that lot. Some decent cfm fans would be needed to

 

[JN]

If it was me, and i had a case big enough, i'd do something like this:

Loop1: CPU, GPU1, GPU2, Tripple Rad+Fans

Loop2: NB, Mosfet, Mosfet, Single Rad+Fans

Loop1 would have a D5 pump

Loop2 would have a DDC pump

Scrap the res and use T-Lines for both.

 

[shiftlocked]

There is a small glimmer of hope for this one just yet. Theres an existing big water system in there at the moment with a 120mm rad, would that be any use as a pre cool system

 

[JN]

You could use the bigwater for the 2nd loop i suppose, as the temps on that loop arn't hugely important.

 

[shiftlocked]

he diagram is almost complete except I am thinking of putting:

1. each VGA waterblock & Mofset into a separate loop

or

2. Both VGA water blocks in one loop and both Mofsets into another.

 

[Eguy]

2 would be right, IMO you should use 2 pumps for the CPU + GPU route

 

[FragTek]

I have a lot of experience in the watercooled SLI field

You will DEFINATELY need 2 pumps to properly push water through 3 waterblocks and a passive rad won't do you a lick of good with the heat that those 3 blocks are going to be pumping in to that water. You will want a triple 120mm rad to cool all of those blocks properly, you could squeak by with a dual 120 rad but you will definately see the performance hit between that and a triple.

Two pumps is necessary however... One pump will struggle with that setup, the flow rate will be so low that you could see worse results than aircooling. 2 x Laing D5's would be the ultimate pump option for ya.

 

[WC Annihilus]

Well... if you had an Iwaki pump you probably wouldn't need 2 pumps I would also suggest 2 AquaXtreme 50Z's as they are nearly just as powerful as the D5's and have less heatdump.

 

[FragTek]

rofl an iwaki would add more heat to the loop than all 3 blocks combined, hehe.

And those AX pumps are pretty damn nice.

Edit: Now that I look at your list again ive noticed that you're looking at a 6 block setup. I'd recommend THREE D5's at minimum and NOTHING LESS than a triple 120 rad.

 

[WC Annihilus]

An Iwaki RD series wouldn't add too much heat. Friggin powerful too

 

[WC Annihilus]

I say get 1 or 2 Iwaki's plus a racecar radiator!

Racecar Rad SLI setup

Rad itself

 

[shiftlocked]

Cool thanks for all the help so far. The case that im working with is a thermaltake armour series. Its got a 120mm grill fan on the back. Its looking more and more like putting the rad on the top of the case and mounting it there on some blocks.

Would a laing D4 pump handle the graphics card side of things and use a thermaltake bigwater for the cpu and northbridge be an option?

 

[shiftlocked]

an updated version

360mm rad with a couple of fans for when its gaming and the cpu / northbridge on its own seperate look. The joining of the 2 systems is optional at this stage. Any better?

 

[FarFarAway]

Yeah that looks much better. Should be able to handle that lot I reckon

 

[blackrain]

Cool thanks for all the help so far. The case that im working with is a thermaltake armour series. Its got a 120mm grill fan on the back. Its looking more and more like putting the rad on the top of the case and mounting it there on some blocks.

Would a laing D4 pump handle the graphics card side of things and use a thermaltake bigwater for the cpu and northbridge be an option?

dude u can fit a triple rad along the front panel and its fully vented... ill get the pictures of it sumone hase done it before..

 

[blackrain]

here i know its a kit review but it just shows the triple rad in place in the armour just behind the face panel, bottom of the page in the link...

http://www.motherboards.org/reviews/hardware/1512_2.html

i have an armour too, just relocate your HDD's to the top left, next to PSU

 

[shiftlocked]

Just wondering

So if I had 2 loops running on 2 seperate pumps, is there any real benefit for going for 2 seperate reservoirs or are they mainly just a holding tank for water?

Also im thinking of this scenario

On the radiator im thinking of running the rads either independantly for the cpu and video or just debating as if to or link them up and then take all the ouputs through the 120m rad and into the 360 in

ie go

outputs from vga cards into 120 rad then out to 360mm rad where it joins with the loops from the cpu. Ie output of rad1 meets with cpu to go into 360.

 

[FragTek]

You've even got me confused with that last post mate, lol.

Any chance u could whip up a quick drwing so that I can better visualize what it is you are trying to do? From the sound of it you want two separate loops but then somewhere in there u speak of joining the loops at one of the rads (which would then turn it in to a single loop).

I'm confustrictaed rightnow, lol. Might be because I'm at work surfing the forums from my PPC.

Drawing FTW!