Swiftech is awesome, stackable MCR-QP rads!

That's pretty badass. Kudos to gabe for doing that.

Reminds me of my current baby:
24radwhole.jpg
 
Hey Arcygenical, how well does that perform? I assume that's in parallel flow? There's a debate on XS on how much that will affect the effectiveness of it.

Also, I asked this on XS but I don't think I've gotten an answer yet, but how do you mount the fans??? O_O?
 
soulesschild said:
Hey Arcygenical, how well does that perform? I assume that's in parallel flow? There's a debate on XS on how much that will affect the effectiveness of it.

Also, I asked this on XS but I don't think I've gotten an answer yet, but how do you mount the fans??? O_O?
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Preliminary testing shows that it's quite good.

Flow through it is hardly restricted at all, and the thermals look about 50% better than the single radiator (although, the testing was done with a single block - not the multiblock loop that I'll be running eventually).

And, for your second question, the middle fans are 38mm. That gives you enough space to wedge the bit of a multibit screw-driver and screw it in using your fingers.
 
Wow take the primary cooling mechanism of a rad, the delta T between the air and the coolant/fins, and lower it. Brilliant :rolleyes:. From a thermal engineering viewpoint that is awful. If you have absolutely no other way of doing it /shrug.

Now if you got rid of the middle fans with standoffs and pulled ambient air from the center through each rad then you would really have something.

edit:

And before everyone flames me read carefully what SWIFTECH says themselves.

http://www.xtremesystems.org/forums/showpost.php?p=3670976&postcount=99

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 applaud Swiftech - that statement is honest and to the point and something rare - balanced rational advice and take all factors into consideration in particular the consumers needs. These stackable rads may be a solution for some people but without independent testing the "serious boost" part leaves me wanting independent test data. But still, for $50ish or whatever these rads cost, it will help and I guess with pumps going $80 and up that is not all that much money when you look at the total cost of a high end WC system.

It will be interesting to see if that advice will be on the actual product page.
 
Wow take the primary cooling mechanism of a rad, the delta T between the air and the coolant/fins, and lower it. Brilliant . From a thermal engineering viewpoint that is awful. If you have absolutely no other way of doing it /shrug.
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Oh, of course. It's really not an efficient design at all, considering the heat from the first radiator will be pushed through the second radiator, lowering it's ability to dump heat.

However, these stacked radiators are showing gains over an equally sized Thermochill PA radiator. If you can stack 2 MCR rads, that together, cost the same as a Thermochill - and are only a few mm wider than a thermochill+fans... And still get 10-20% better performance, it's a no brainer.
 
i'm curious, how is this any more different than what you just showed earlier (in the picture of the 2nd post).

Is it less restrictive for the flow to be parallel on the radiators?

is it more efficient in cooling that the water be going through the series in parallel as opposed to series (like in the 2nd picture).
 
BillParrish said:
Wow take the primary cooling mechanism of a rad, the delta T between the air and the coolant/fins, and lower it. Brilliant :rolleyes:. From a thermal engineering viewpoint that is awful. If you have absolutely no other way of doing it /shrug.
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I'm sure you'll double-correct me, but I think you mean the 'resultant' T. The delta can be affected by both factors (ingress and egress temperatures). Thus, lowering the delta 'could' be accomplished by raising the egress T, which is counter-intuitive.

BillParrish said:
I applaud Swiftech - that statement is honest and to the point and something rare -
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I second your applause. Unfortunately that advice comes from a forum unrelated to Swiftech?

@ Arcygenical - It would make you happy to know that your design is the same used to cool the hydraulic pump control for the rear ailerons and flaps on the F-22 Raptor. Space was at a premium so an improvement to the current radiator was needed.....or so the story goes.

-EGA Wrangler
Chemist, Computer Scientist and Captain of Marines
 
iceredwing said:
i'm curious, how is this any more different than what you just showed earlier (in the picture of the 2nd post).

Is it less restrictive for the flow to be parallel on the radiators?
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It's in no way different. My design has a few more components, and uses acrylic blocks to direct flow.

Restriction is cut in half when two identical components are put in parallel. Consequently, so is flow rate, through those identical parts.

egawrangler said:
@ Arcygenical - It would make you happy to know that your design is the same used to cool the hydraulic pump control for the rear ailerons and flaps on the F-22 Raptor. Space was at a premium so an improvement to the current radiator was needed.....or so the story goes.
Click to expand...

Cool, it *does* make me happy to know that said design is also used in the F-22 Raptor. :D
 
@Arcy

Do you think 2 of these stacked rads would handle a single 4870x2 and an OCed Q9550?

right now I have my Q9550 on a triple and I haven't bought a 4870x2 yet :( Ideally I'd like to keep everything internal but I don't think a single 120.1 would handle my CPU....that would be the only way for me to keep everything internal....what do you think?
 
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