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P6T quad SLI GTX 295 with Koolance VID-NX295 water blocks

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May 8, 2009 4:35:23 AM

I want to add 2 GTX 295s each with a Koolance VID-NX295 water block.





There are a few things that are concerning me.

The space that the P6T allows for the first 2 GPU's are only a PCI slot apart, which means the 295's would basically be touching each other. I'm planning to overclock the 295s, but with the space constraints on this board, air cooling is not an option.

This is why I have resorted to water cooling. I also have a Coolermaster HAF 932, which is good for water cooling. And as for the cpu, im planning to get the Coolermaster V10. Only planning to watercool the GPUs.

Would I be able to have 2 GTX 295s in SLI each with NX295 water blocks when there so close to each other?
Is there a nozzle I can get to allow for this setup? or is there another way? Or maybe I should just get a new motherboard.

need your help!
a b K Overclocking
May 8, 2009 7:37:23 AM

Well, would you know the width of one water block? If you already have the motherboard, you can just measure the gap between your slots and make an estimate based on that.
a c 330 K Overclocking
May 8, 2009 2:08:24 PM

SLI boards are designed to allow for dual-slot design by default, so you won't have problems with the boards fitting in there. As for adequate air-flow, you might have a problem, especially with stock cooling. Those beasts get hot.

Most people that watercool don't recommend Koolance, but some of their newer nickel and copper products probably are OK...they just don't have a lot of street credit for being serious watercooling solutions.

Danger Den (EK and others as well) make GPU blocks that allow you to port one SLI block straight into the lower block via a replaceable fitting on either side of the cooler. You simply unscrew it from one side, and into the other, and then plug the remaining ports with the plugs. You are probably going to need at least two 2x120 radiators for that SLI setup alone...add another if you plan on adding in the CPU. You could also go for two 3x120's to allow for better cooling/future expansion if you wanted.

What pump and radiators are you looking at? What tubing size are you running?
Related resources
May 8, 2009 5:29:00 PM

OK, thats what I figured. I was planning to get Swiftechs MCR220 Quiet Power Dual 120MM radiator with a Thermaltake AquaBay M5 Alarm System Water Temperature & Level Display with Pump & Reservoir.

Would it be ok if I just get 2 1x120 rads for each GPU?
a c 330 K Overclocking
May 8, 2009 5:54:44 PM

You are looking at a total of 4 GPUs on 2 of those cards, so at minimum, you would want a MCR220 for each one. I am running 2 MCR320's and I have my CPU northbridge and a single 9800GTX. I'm waiting for my 790i board and the second 9800GTX to SLI, so that setup will still be fine for me.

I would highly recommend a surface area of 6x120mm worth of radiator for your setup for 2 reasons:

1) The ability to include the CPU at anytime without the need for more radiator space (or setup a second, CPU-only loop with pump/rad)

2) Those cards generate a lot of heat, and with 4 GPUs, you are going to push the thermal capacity of any loop. You aren't going to see the temps you would see with stock cooling by any means, but the more surface area you have to cool the coolant, the lower your consistent load temps will be to ambient. Cool=nice.
May 8, 2009 7:17:55 PM

rubix_1011 said:
You are looking at a total of 4 GPUs on 2 of those cards, so at minimum, you would want a MCR220 for each one. I am running 2 MCR320's and I have my CPU northbridge and a single 9800GTX. I'm waiting for my 790i board and the second 9800GTX to SLI, so that setup will still be fine for me.

I would highly recommend a surface area of 6x120mm worth of radiator for your setup for 2 reasons:

1) The ability to include the CPU at anytime without the need for more radiator space (or setup a second, CPU-only loop with pump/rad)

2) Those cards generate a lot of heat, and with 4 GPUs, you are going to push the thermal capacity of any loop. You aren't going to see the temps you would see with stock cooling by any means, but the more surface area you have to cool the coolant, the lower your consistent load temps will be to ambient. Cool=nice.


ok so Ill need a radiator for each 295. Would I need 2 pumps? and what would be the best size for tubing?
a c 330 K Overclocking
May 8, 2009 7:25:10 PM

No, you can use 1 pump. A pretty popular one is the Laing/MCP655. It's a beast. It is native 1/2ID tubing, which is pretty common for most higher end WC, but 3/8 isn't too bad.
May 9, 2009 4:21:39 AM

Awesome, I'm just getting into water cooling, and you've been a great help. One more thing, is there some sort of monitor for the coolant temperatures? I like Thermaltakes AquaBay's Alarm system. They'd look cool on my case :) 
a c 86 K Overclocking
May 9, 2009 12:24:32 PM

Anything with the watercooling name of TT is crap.

Rubix, you think it could help with my massive cut n paste? Open his eyes?
He's clueless.
There are 5 brands of current popular WC rads. Some are good, some are better for xx purpose than others. WC blocks for a GPU, there are 5 popular manufactureers of blocks, some are better than others. Only 6 good tubing brands, many colors, types etc. Not even counting sizes. What about your resiviour? Clamps, type of liquid..........................


And not one brand/manufactuere above has the name Thermaltake.
May 9, 2009 1:41:03 PM

conumdrum - please could you elaborate - I'm planning my own WC system but am unsure which companies offer the best quality products.

a c 86 K Overclocking
May 9, 2009 1:47:38 PM

PM sent thelittlechef
May 9, 2009 2:08:58 PM

you mind sharing with the class?
a c 330 K Overclocking
May 9, 2009 6:51:18 PM

I think what he was meaning is his usual post that includes a lot of info on where to go next to look:

CPU HS $65
GPU HS and air HS for vram and mosfets $95, full cover block, $100-200
Radiator $60 min, up to $130
Pump $80 +
Resiviour $25
Hose, some barbs and clamps etc (min $25, more like $35)
Fans $15-30

I went top notch and spent close to $600 to cool my CPU and GPU.
First you gotta learn about WC. It's not like walking into Best Buy.
Spend a while (weeks is best for your sanity) at these links.
Look at the hundreds of loops close to your case and components in the stickies, read a couple 50 or so threads over the next week or so, you'll be on the ball to make the right choices and by then know how to put it together.
Not 'Roket Sience', but basic knowledge is required.
And you should spend a few hours on the listed sites reading threads. It's how we learn. Once the goodies show up on your doorstep your on your own.
For your benefit please spend a few days reading a LOT. At the busiest places for WC masters. Guys who have done it for YEARS at OC forums and xtreme forums. It took me a while (I was OCing on air, aftermarket stuff, bios settings, best chipsets etc etc) to learn the language and the tricks to a easy install.

Don't expect miracles or SUPER DOOPER over clocks. What you will get is a quiet system that can handle OC to the max of your hardware IF you buy quality and buy smart. And minor maintenance too, a bonus for the water cooler.

Also while there please read on case mods etc. The radiators are not for small cases, pumps and hose routing, wire management and other things are important. Google your planned case and the word water-cooled in one line. You might get lucky.
............................
Edit: The next paragraph was from 2008. With the advent of the HOT i7 and bigger GPU's, it has changed. A 220 size MIN rad for an i7, you want big overclocks, better go 320 sized rad.
................................

IF you just cool your CPU and your NB if you want, you can get by with a 120.2 sized radiator (RAD). And MAYBE fit in inside depending on your mod skillz. You want to cool your GPU too, you'll need a 120.3 sized rad, and it probably won't fit inside. The rear external rad really works great. No matter what your adding 10lbs to your PC.

Once you got an idea of what is good/bad then start getting your system for WC put together and we'll be glad to help.

http://www.xtremesystems.org/forums/index.php? Not a noob site, but great stickies
http://www.ocforums.com/ My fav, good peeps, know their stuff, less hardcore
http://www.skinneelabs.com/MartinsLiquidLab/
http://www.over-clock.com/ivb/inde [...] opic=20277 A GREAT Europe site
http://www.overclock.net/water-cooling/
http://translate.google.com/transl [...] n&ie=UTF-8 Info on rad testing
http://www.xtremesystems.org/forum [...] p?t=220593 More rad testing
http://skinneelabs.com/
http://forums.extremeoverclocking. [...] p?t=282232

Stores
http://www.dangerden.com/index.php [...] e&Itemid=1
http://www.petrastechshop.com/
http://www.sidewindercomputers.com/
http://www.jab-tech.com/
http://www.performance-pcs.com
May 10, 2009 3:45:20 AM

Thanks rubix for the advice

This is probably what I need to know. Can't just jump into water cooling, gotta do my research.

or I may end up with a $4000 door stopper.
a c 330 K Overclocking
May 12, 2009 3:12:52 AM

Hey, no prob. I should be getting my components to finish up my upgrade on tuesday.

Just don't rush into it...know what is good and what isn't so good. If all your components for a WC setup come in the same box (i.e. Bigwater..etc) you aren't going to be a very happy camper in the long run...or even the short sprint. WC is a hobby, some would say overkill...but I love it. If you have a great attention for detail and always want to tinker/improve...WC is right up your alley. Just let us know...we might be gruff at times, but have to weed out the riff-raff. We are all glad to help. Just post pics when its done!
May 12, 2009 4:12:58 AM

Danger Den is the best place for water cooling needs (imo).
a c 330 K Overclocking
May 12, 2009 2:50:33 PM

Not all DD stuff is the best. Most of their CPU blocks are somewhat outdated and don't adequately support quad cores. (they 'work' but don't necessarily provide the best cooling vs. other CPU blocks). That being said, they make excellent full-cover GPU blocks, though.

Swiftech
DangerDen
EK
D-tek

Those are most commonly used by watercoolers. Conumdrum will probably chime in with anything I have missed.
a b K Overclocking
May 13, 2009 12:10:09 PM

^lol. Don't think you missed any thing. Doesn't look like any one mentioned fans, so I will take the liberty to mention about that.

@OP: If you are looking to make this a quiet system, take a look at Yate Loon fans. The only place to buy real Yate Loons are through Petras (If I remember right). There are rogue Yate Loon fans being sold at a few other places, and they don't perform as well as they should. Also if you are the modding type, you could get a heatercore(s) for the GPUs, which would reduce costs quite a bit.

http://www.dangerden.com/store/product.php?productid=48
Double Heatercore. $35.
vs
http://www.dangerden.com/store/product.php?productid=25...
BlackIce GTX240 $91.
Both should perform similarly assuming good high speed fans are used, but the heatercore is ~30 cheaper.
May 22, 2009 8:09:03 PM

Nice, thanks for the info everyone. Now I'll be looking towards the radiators. I need to know exactly how many Rads I would need for this kind of setup.
!