2 pumps, 2 rad 1 cpu!!!!

Drazic

Drazic

Drazic

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Portishead, Bristol
Random idea here....so tell me if it will work or not okay and sorry for doggy pic...

2pumps.jpg


2 Eheim 1048's
1/2'' tubing
CPU block with 3 barbs
2 Thermochill pa120.3 rads
4 Y spliters
1 DD fillport

Idea is thus

T-line kinda thing done via the Y adapter fills the line to both pumps

Both pumps go into one and through the block

1 outlet goes to the left rad off the cpu block and vice versa for the right ie for the dumb one side of each cpu block is cooled by 1 PA120.3 rad!

Both outlet off each 120.3 rad goes to each indervidal pump.

Okay idea is that with both rads i can get a massive oc...i have all the kit right now and my case is made for it to fit.

Why the 2 pumps, am i right in thinking that faster flowing water over the direct center of the core shifts more heat??

Drazic
 
Not to put your idea down but it's pointless.

Water will only carry so much heat and it will only cool your cpu down so much.

1 x 120mm rad and a pump is enough to cool down 1 cpu.

If you were cooling say.. 3 hdds 1 cpu 2 gfx cards nb and ram then 2 120x3 rads would be ok..
 
As others have said its complete overkill, and will just overcomplicate things... If you still want to got for it then more power to you :)

Personally get a bid rad (120.3), powerful pump (Iwaki) and a top spec cpu block and build a radbox.

Far simpler and far easier to setup.. Easy to check for leaks/debug kinks etc

Then if you want to go further either invest in a waterchiller or phase.

ALWAYS stick to the KISS principles... (Keep It Simple, Stupid!)
Sam C
 
Nope. I had a dual heatercore and 120.2 rad in my system up until last weekend. I wasn't getting great temps from my watercooling so was a bit p'd off. I then decided to rebuild it with just the heatercore and temps dropped on load by about 9C and idle about 5C. Granted, I only have one pump but it is not exactly a slouch (Aquaextreme 50z). Everything is so much cooler now and the system is much better with just the one heatercore. I know that the poor performance was inevitably down to the pump, I can't see temps being better with 2 rads than just the one in any event as flow would not have been *that* much different.

Oh and my CPU is a dual core X2 @ 2.8ghz with 1.49v so it REALLY pumps out heat but dual primes @ 42C with even an X1800XT clocked @ sig speed in the loop - another huge heat load with that card.
 
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Phase can't do

Water chiller ditto as above

I have 2 TWO PA120.3's with shrouds

My case has a built in rad box section!!

Iwaki pumps are nuts, i just googled images and wow...no idea what to look for etc....

This P4e @ 4ghz dual prime both cores on air gives out 80c heat, thats a XP120 with a Ambur fan on there
 
smids said:
You can't dual prime a prescott, per se. It is still a single core. I know they run hot, but DC's run hotter, unless of course you have a P-D?
Click to expand...

AGGHHH you AMD boys don't know shiz about Intel

Prime 95
SP2004 - made to run on all cpu's as a dual prime

Prime 95 only gets cpu to 54% usage, need 100% usegae to mnake sure it's stable, this is the HT on Intel making you do this

Prime95.jpg


^ thank you
 
My last computer was a P4 3.0HT Northwood, so I do know a lot about them :p. What I meant is that the heat output is still only that of a single core. It's not the same as running 2 cores effectively stuck together and the heat output isn't in the same ball park. Prescotts will output about what, 80W of heat, perhaps 90-100W when clocked. An X2 will dump 110W stock, and about 180W when clocked (notice how 200W phasers start hitting positive temps on DC's). That is what I meant by heat. If my one rad (dual heatercore) can keep my X2 clocked like this at dual prime 42C, then one 120.3 will overkill one CPU which isn't a dual core.

By your everest reading, you CPU is @ 42C?
 
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run prime on priority 10 as well, d'oh dont you know anything about prime :rolleyes:

also, we know enough to say that that presscott aint gonna get anywhere the performance of our AMD's without some serious subzero temps :D
 
Drazic,
running dual pumps will give u ~1-2oC (instead of running just one) off that system if you were using something like 120.2 rad, having bigger rad and also two of them you'll need something much better than 1048 pump's (even if they are two).
Depending the cpu block you want to use you have to set your pumps in different oriantation (parallel or series). Personally i use a Storm waterblock which needs high pressure to perform at its best so i have 2xL30's in series to have maximum pressure, sometimes i can hear the water flowing through the block jets... :cool:
What block you going to use btw.... you haven't mentioned it.
If i had another 120.2 rad on that loop that headpressure would be less but water temps would be better hence might have seen another ~2oC off the cpu but no more than that as if i wanted maximum waterblock efficiency i would need a scale bigger pump than 2xL30's, orelse waterblock efficiency would drop cause of not enough pumping power. Similar thing happened to smids 3 radiator setup and single not powerfull pump :p

2x120.3's are overkill for a prescott even at 4ghz, even though the more rads the better but not always. The more rads the more head pressure you'll loose and pump will struggle. Going with two of these massive rads, you'll need big pumps to have decent headpressure on the waterblock to perform (that is if the waterblock that you're using is needs high pressure to perform). I've gone through prescott 478socket & 775 and running a presler now using same radiator (120.2 that is and also have a 6800GT overclocked vga on the same loop) and watercooling setup. Temps never got more than 50oC and all cpu's were overclocked about 4.15Ghz with decent vcores in some cases.

My opinion on this is to use a single 120.3 and two better pumps in series or in parallel depending the waterblock you going to use, i.e. if it is a restrictive one you'll need high pressure, so go with series pump orientation. If the block is less restrictive go with pumps in parallel to improve flow.
Remember, you need a radiator to dissipate heat from the components you are using. Which means the cpu and vga heat energy, which are approx 220watts at full load both. If you check thermochill charts you'll see that a 120.2 radiator is good enough to dissipate that much heat using relevant spec fans and ambient temperature.
If you are stubborn and want to use no matter what two 120.3's make sure to use something like 2xL30's or something bigger, the rest setup on the pic you posted looks ok with each rad positioned as is, might need two T lines to bleed the system quicker as having two rads you going to have more coolant running through that system.

Also smids is right on this, HT cpu's are single cores, so running prime95 actually gives almost maximum heat output. If you notice you'll see that running single prime, cpu temp (on a single core HT cpu) will go lets say 50oC and when you start second prime instance it will move from 50oC to 52oC, whilist in a dual core cpu if one prime95 instance is running cpu temp will go up to 5oC and running a second instance it will move from 50oC to 56-58oC's (numbers are just random on watercooling, on air they should be even more).

For example on my 920D running at 4.15ghz, 1.44vcore on watercooling, cpu reaches 38oC after an hour running prime95. If i start the second instance temp will instantly rise from 39oC to 43oC and then stabilize at 44oC. On my single HT core, temp would go up to 46oC with one prime95 instance and 47oC with two :) This means that with a single HT core while you run single prime95 you get about maximum heat output, but to get 100% max heat output you'll need two whilst in dual cores you have about 60% being used when running single prime instance and 100% when running two. Much of the temperature issue and observation here can be also explained that since they are under the same heatspreader, when one core is running the heatspreader spreads the heat over the surface anyway so you can't really tell the difference by cpu temps, so is kinda pointless to compare it by max temps but only by watching how fast the temp differences rise on the beggining of the test, only then you can tell the difference in between single and dual.

sorry for the long post just speaking by personal experience on watercooling and intel cpu's :)
 
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Well, that is an informative and detailed post for you, most of which I agree with (my pump isn't weak, it's a AquaE 50z! :(). Other than that, you are set :).

So your best bet in summation is drop one rad, get a Storm G4 v2 and run those pumps in series - that will cool it well. You might as well get a 120.3 (space permitting) and that way you can cool graphics and even northbridge well without much impact (though northbridge is a bit pointless, some still do it).
 
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heh, just tried to explain through real life examples :p
prolly it wasn't good enough to pump through 3 rads though :D

haven't worked with 12v pumps tbh so can't say anything about them but i guess they might struggle when back pressure is high enough, hence resulting in less flow (just an assumption...).
 
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