MCR-QP Stackable Radiator Series Released

Ah ok, so it works like the fan mounts often used on Lian Li cases. If that is able to hold the radiators then that's great :)

well, it will *work* with closed corner fans, just requires a little modding to open up the closed corner which I have done more than one myself.

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Originally Posted by gabe

you can't install a closed corner fan in a stackable config

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I'm fairly sure that's what Naekuh is objecting to.

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Originally Posted by gabe

Dual-row radiators also run in parallel Utnorris. The only difference is the additional pressure drop caused by the presence of the fittings.

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I get that, however in this situation the water is going to flow in the direction of least resistance and therefore my concern would be that it would bypass the first rad and just flow through the second rad. I am not saying that no water would flow through the first rad, but rather that the amount would be siginificantly less than the second rad and so forth. Now I have never ran two rads, video cards or anything else in parallel, so this is more of a question than statement and I am just trying to understand how this will work. I am thinking about running my 2 gpu's in parallel, but from what I have read is that you lose performance because the water by-passes the first block for the most part and goes to the second block. I guess it would help if someone could link me a picture or diagram showing how the water should flow.

Would this would fit at the top of an ATCS 840 and be out of the way of the motherboard? The total thickness is 93mm. (I'd measure the case myself but I don't have one yet.)

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Originally Posted by Utnorris

I am thinking about running my 2 gpu's in parallel, but from what I have read is that you lose performance because the water by-passes the first block for the most part and goes to the second block. I guess it would help if someone could link me a picture or diagram showing how the water should flow.

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that's inaccurate. as long as the pressure drop in both devices is similar, coolant will flow in both.

There is a loss in coolant velocity in a parallel setup, causing a local loss in heat removal capacity, but since pumps having a finite ability to push fluid, parallel setups may become beneficial in many circumstances. GPU cooling is among the most typical candidates for such configurations. By minimizing the overall pressure drop in the loop, you maintain high heat removal where it counts most, the CPU, while keeping adequate heat removal capacity at the GPU's.

Have you done any testing gabe on a setup with one 120/240/360 rad compared to a stacked scenario? I think this would be extremely interesting results.

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Originally Posted by gabe

that's inaccurate. as long as the pressure drop in both devices is similar, coolant will flow in both.

There is a loss in coolant velocity in a parallel setup, causing a local loss in heat removal capacity, but since pumps having a finite ability to push fluid, parallel setups may become beneficial in many circumstances. GPU cooling is among the most typical candidates for such configurations. By minimizing the overall pressure drop in the loop, you maintain high heat removal where it counts most, the CPU, while keeping adequate heat removal capacity at the GPU's.

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Thank you for the explanation.

Very clever, I especially like the compatibility with existing MCR rads so you only have to buy one stackable. I'm curious to see what the general performance gain is also. If double thicknesses are showing around 8-15%, and someone's earlier test was showing stacking in series worth nearly 30%, I'll guess at a 20% figure with preferences towards the higher speed or 38mm pressure fan scenario with just one set of fans more with more fans obviously....how much I couldn't even guess.

I agree some very well articulated test data to go along with this would be helpful for people. Something like a single MCR320 with fans in pull vs MR320 with the same fans in push & Pull vs the three fan scenarios on this stacking setup. Keep it simple like fans used and percent gained or degrees lost in water temperature of a simulated system heat load...something like that would be great.

This would provide the necessary fan power guidance people will be looking for as that's a bit unknown with this stacking, and likely fairly important with the air pressure drop doubling stacked like this.

My vote goes for the MCR420. Quad sizing is becoming common enough. Unfortunately right now, it's reserved for the high priced double thickness only segment. Time for a quad, please...:D

The stacking is a really really nice option though. I'd like to see a stacked MCR320 setup against a PA120.3 for example...I bet it's good!

if I had a tube of thermal paste and no homework I could do a test right now.... but at school its just not practical for me to remove radiators from the loop as my dorm room is small and not all of my tools are here :\

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Originally Posted by gabe

you can't install a closed corner fan in a stackable config

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Sure you can,
http://powersportsstore.com/images/m...uct%20tape.jpg

3M Red tape!

Anyways any reviews for the stacked rads gabe?

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Originally Posted by gillbot

Sure you can,
http://powersportsstore.com/images/m...uct%20tape.jpg

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http://cn1.kaboodle.com/hi/img/2/0/0...=1211049680000

:rofl:

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Originally Posted by gabe

If you have space, you are better off (always) installing a second rad by itself (in series), but if you do not have enough room, then this will give a very serious boost to your thermal performance at relatively low cost.

The problem we all face here is to strike a balance between space constraints, thermal performance, comfort of operations AND cost of solution. If space is the defining factor, then it forces compromises on the other 3. The stackable solution aims at minimizing the impact on cost of solution.

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I see thanks :)

Plus if your cool like me then you can run the stacked rads in series with waterflow opposite to airflow and get even more performance :up:

Is there a release date yet ?

I Want It!~

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Originally Posted by SNiiPE_DoGG

Plus if your cool like me then you can run the stacked rads in series with waterflow opposite to airflow and get even more performance :up:

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How?

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Originally Posted by eXa

How?

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http://www.xtremesystems.org/forums/...0&postcount=27

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Originally Posted by gabe

that's inaccurate. as long as the pressure drop in both devices is similar, coolant will flow in both.

There is a loss in coolant velocity in a parallel setup, causing a local loss in heat removal capacity, but since pumps having a finite ability to push fluid, parallel setups may become beneficial in many circumstances. GPU cooling is among the most typical candidates for such configurations. By minimizing the overall pressure drop in the loop, you maintain high heat removal where it counts most, the CPU, while keeping adequate heat removal capacity at the GPU's.

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First off thanks a lot for involving the community in your product launch. It's a great idea and well implemented.:up:

Second I am happy to hear a real Pro and Expert say what I've been telling people for years. There's more than one way to plumb a loop and it's crazy some of the notions people have about how water flows and closed loops operate. Even after setting up examples similar to your sandwiched rads and showing temps people still think it's less than ideal and point to linear setups as "normal" and "standard" so it's nice to see you promoting a New standard :D

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Originally Posted by CyberDruid

First off thanks a lot for involving the community in your product launch. It's a great idea and well implemented.:up:

Second I am happy to hear a real Pro and Expert say what I've been telling people for years. There's more than one way to plumb a loop and it's crazy some of the notions people have about how water flows and closed loops operate. Even after setting up examples similar to your sandwiched rads and showing temps people still think it's less than ideal and point to linear setups as "normal" and "standard" so it's nice to see you promoting a New standard :D

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its like the old myth that used to perpetuate itself around the DD watercooling forums and maybe here too that running more than one rad in a single loop wasn't beneficial to temps because it created too much restriction :rofl::rofl::rofl:

Yeah like surface area doesn't matter to heat transfer.

I've always liked the MCR line...it's simply the most cooling for the least money. Now it'll be even easier to get the amount of cooling you need into a small area.