Eheim 1250 with 2 Large Rades and Swiftech Storm, flow rate ok?

[nicspits]

I'm no wiz at all those flow rate calculations, pressure, head loss etc, though I know what they mean. My question is simple:

I have an Eheim 1250, 2 Large Heatercore Radiators, and about 7ft of tubing(watercooling tower hanging from window) in my CPU loop. If I were to get one of these beautiful swiftech storms, could my eheim handle it and give me that .12C/W tested goodness as shown here: http://overclockers.com/articles1261/ ?


Note that my loops tubing from the Pump does have a total of about 4.5 wide 90 degree turns in it.

All opinions are very welcome, interested in this because I'm currently Socket A and I could carry the storm over to S939 in the future.

[SewerBeing]

well its impossible to calculate. We can guess at what it would be. However the 1250 does not have a lot of head so its not gonna be the best. I would personally upgrade the pump to something like a swiftech mcp655 or similar pump for the added performance.

[thorilan]

the surface area of 2 large rads is going to hurt flow of a single ehiem

what is your definition of large rad?

[nicspits]

large rad=fits 2x120mm fans on each side, the basic 12-14" or so surface area plus bottom reservoir and top barb head areas.

[nicspits]

looking at the cost of the mcp655, kind of painful, do you think adding an additional low powered pump like an eheim 1048 (10 watts) or Hydor L20 (14 watts) in the loops would be sufficient. Given my water temperatures entering the block( 1-2C above outside ambient, 6 fans man)., I don't think the extra power will be a factor as long as it is before 1 or both of the radiators, your thoughts on this please.

Thanks for the help as well!

[thorilan]

nope


you either match pumps with the smae characteristics or oyu get a more suitable pump

[Quest For Speed]

The Eheim would not be enough pump for what you want to do. The Danner Mag 3 pump is reasonably priced and has very good head presure.

[crimedog]

if it's going in the window anyway (120v ac is easy), and you have 6 fans so i assume noise isn't much of a factor, i'd get two mag3 pumps for cheap and run them in series. the liang pumps are fantastic for going inside the case (small, quiet, 12v dc) but using them in a project like this is crazy.

[nicspits]

hehehe, thanks for the chime in crime dog, mag3s it is

edit: know a good source for them?

[RangerXLT8]

First off stick with an eheim pump. I've seen the swiftechs crap out more so then eheims. The 1250 does not have the power to push head much greater than 6ft at a good rate IMO. 6ft however is alot when you think of a WC computer loop. If you are using under 6FT of tubing total the 1250 will be perfect. Eheim pumps are among the most reliable waterpumps and reliability in your pump matters the most when cooling very expensive componets. The reason I bought a Eheim pump is for their reliability.

I've not calculated my 1250s flow rate but that sucker pushes my loop FAST.

[nicspits]

alright, crimedog and ranger, and anyone else, commense the fighting over which one would be best, 2o1 mag3(s), or another Eheim. With restrictions of the two large rads, curve, and would be swiftech waterblock, do you think 2 eheims will even have enough, that's only 12ft and I have about 6 or 7 in just tubing (it must be some less cuz i'm using the eheim right now, but I do plan on increasing the length of the loop so I can get my tower out of the way of one of my speakers).

edit:whoa, just noticed i put rades in the title, lol.

[Gulinborsti]

the liang pumps are fantastic for going inside the case (small, quiet, 12v dc) but using them in a project like this is crazy.
Well, I'm using a Laing and a real big radiator (9 x 120mm fans fit to it's surface, 24 m tubes und 3,5 square meters surface) together with CPU, GPU, NB and HDD waterblocks and it's performing really well. Those pumps are incredible while powerfull while still small and quite. And I know someone who uses two of this monster radiators with on these pumps.

btw, is there a thread for case presentations somewhere on this forums?

I only have links to 2 german sites, picture heavy:

My PC (http://www.ktc-cooling.com/forum/viewtopic.php?t=1095)
My PC (http://www.overclockers.at/showthread.php?s=&threadid=149173)

[Quest For Speed]

Here (http://forums.procooling.com/vbb/showthread.php?t=10825) is a good read about pumps.

[crimedog]

well the mag3's are about 11' of head, enheim is about 6'. the mag3 was the most popular pump back in the day, before liang started to run things. Gulinborsti i didn't mean to say that the liang is bad in any way, i just think it's much too expensive to use in a project like this (one where you don't have to see it or hear it).

drfostersmith doesn't seem to be carrying it anymore, they have it at petsmart (http://www.petsmart.com/global/product_detail.jsp?cm_ven=Froogle&cm_ite=ProductFeed&ASSORTMENT%3C%3East_id=2534374302023693&FOLDER%3C%3Efolder_id=2534374302030157&PRODUCT%3C%3Eprd_id=845524441776826&bmUID=1126714821750) but i think it's too expensive. i have one used lying around, maybe someone else does too and you could find a pair, i dunno.

nothing wrong with enheims either, they're great pumps. very quiet, reliable, etc but they're just not that strong.

[ls7corvete]

I think one pump is fine, two mag3s is definetly overkill, your gonna be dumping heat into the loop with that.

[nicspits]

ls7corvette, read the whole thread man, 2xlarge heatercore rads, 6 120mm fans turned all the way up, the watercoooling tower is out the window, and with that much flow (i'd imagne probably a true 85-90cfm all the way through (the fans are all rated at 100cfm) and assembled 2fansrad2fansrad2fans, shrouded of course.

with that, the new swiftech block with, what was it almost 70inches of head loss, 6ft of tubing in the loop, and 4 curves in it. you really think 1 pump is enough (if you mean mag3, i can imagine that, but sticking with my eheim seems kind of goofy.)

Crimedog, if you could scrounge that up, that'd be great. I already have a PM in and replied to from someone in classifieds (waiting for my decision) so that would make it complete, unless of course I truely just need 1 mag3.

[Etacovda]

the swiftech storm review at OC.com has gotten the PD figure wrong - its closer to half that number (1.5 rather than 2.8)

[fhanderson]

I'm running 2X302 rads in a loop that is a little longer than yours. I'm using a MAG 7 and it is working very well for me.