MCR-QP Stackable Radiator Series Released

[pneubmatic]

Okey there are 2 ways to get this working.

Theory, so if im wrong, i welcome a good debate in it.

The first problem is how there all connected with a 25mm or 38mm space in between. Remind you guys of the infamous paralell sli setup?

The problem with this setup will be in people who run high pressure. The reason for this is because if your spacing is wider, you'll bypass the first rad with high pressure.

The 2 ways i mentioned to compensate for this is to make the stacking smaller. Gabes idea and theory was to make a simple dual pass rad into a quadpass rad. Problem is in a normal rad these passes are connected very short. If you put a bridge or a passover your first rad wont get enough flow for it to be effective.

Second way is to lower your flow at the rad. This is why i want to see tests on this setup, to see possibly, your best pump might be a D5 at setting 3 in this setup.

Overall my original estimates is 33% low to 50% high performance gain @ a cost 125% more then a regular MCR320.

If your hoping for the 2x gain like you would in serial, keep dreaming.

Ask any tester what the delta air in and out on a rad is. They will tell you its very small unless you got silenx fans.
So no stacking is a good idea, you just need the perfect paralell or you need a low flow going though gabe's paralell.

Oh F paralell would work in this setup too, but would require 2 stackable rads.

NaeKuh, it looks like you are exactly right. At least, with the results I've gotten from my rad sandwich so far.

It's been surprising what's happened.... to me, at least.

When I first setup the sandwich, I saw idle temps drop by five degrees, and loaded temps by eight. I was pretty excited. Now, however, I'm not seeing these same results. Honestly, I have no idea why. My ambient is still the same, and nothing else changed, but as of last night, my idle temps were down to a two degree improvement over the single rad, and only four degrees at load (Prime95).

So today the rest of my fans came. I now have 9 fans on the sandwich. And it doesn't matter how fast or slow I turn them, my temps stay exactly the same: 80 at load and 40 at idle. This is on an i7 920 @ 3.6, ambient at 22 C, Coolant temp in reservoir 33 C at load, and 28 C at idle. Not exactly the results I was expecting. I'm very tempted to take the sandwich apart and run them in series. I honestly think that, as you speculated, I'm bypassing my first rad.

Edit: just to be thorough, here's my total setup: Res - eheim 1250 - Swiftech Apogee GTZ on cpu - EK GTX295 WB - MCR320 Rad sandwich - res. My flow rate is exactly one gallon per minute.

Yet another edit: it would be great if Swiftech would include hardware necessary to plumb the rad sandwich in either parallel or series. I'm going to try and track down the necessary connectors to leave it stacked, but plumb it for series flow. I hope it can be done... if anyone could suggest fittings for doing this, I'd really appreciate the help. The hard part is going to be getting fittings small enough to fit between the two rads since I'm using 25 mm fans.