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Questions regarding the Eheim PCPS pump. - Page 2

post #11 of 15
Thread Starter 
Alright, well that leaves mounting a DDC pump downwards out of the question. As for the heat that the PCPS put out I doubt it needs any ventilation but I guess time will tell tongue.gif

My plan B is to mount a DDC pump sideways under a micro-res. I've spoken to a guy that runs a highly regarded WC store here in Sweden and he said that it's possible if I bleed out the system first (since the outlet will be below the inlet the airbubbles will have a hard time finding their way out). However, he also said that the performance will be decreased so that's definently just plan B.

The main reason I dont want to do DDC+Res is that I wont have room for G 1/4 compression fittings and that will kinda ruin the clean look im going for.

Picture of "Plan B":
Edited by Kubba - 4/2/11 at 4:42am
post #12 of 15
Thread Starter 
Found a radiator that will fit without having to mod the front:

http://www.aquatuning.se/product_info.php/info/p1710_MagiCool-SLIM-SINGLE-120-Radiator.html

It's really tiny (153x120x30mm) so I guess the performance is really ****ty even in a push/pull config?

How much performance do you think ill loose if I go with the "slim" radiator instead of a 160x120x47 sized one? (+1,7cm)
post #13 of 15
There is no point at all in cooling both a GPU and CPU on a single 120mm, at minimum your gonna need a GTX240 with high RPM fans.

Use:

http://martinsliquidlab.files.wordpress.com/2011/02/martinandskinneespumpandradoptimizerv54.xlsx
To estimate your delta, just enter the amount of load you estimate (use a PSU-calc).
    
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post #14 of 15
Thread Starter 
Played around in that Excell sheet for a while and got some results..

First of all the rads seems to differ alot, when I use the 120mm XSPC RX120 it says 16,8C but when i use RS120 it says 20,62C.

However, when i use a GTX 360 rad it says 8,35C so you could say that we might be talking about a roughly 10C difference from using a 120mm rad and a 360mm rad?

I have no idea whats "ok" results and whats "throw that **** out the window" results so please tell me!

Ty for the excell sheet btw, interesting stuff to play around with smile.gif


EDIT: I wrote 345 in "Block watts" (calculated the watts from i5 and a GTX580 from the site they linked), 2 120mm fans at 1450RPM in push/pull, 8 compression fittings, 5 feet of tubing, DDC 350 pump, EK supreme block, BP GTX480 block and got these results:

XSPC RX120mm Radiator: 17,05C and 0,91GPM
XSPC RX360mm Radiator: 7,92C and 0,92GPM
HW Labs 480GTX Radiator: 7,74C and 0,83GPM


So....how bad is 17,05C? headscratch.gif
Edited by Kubba - 4/2/11 at 1:13pm
post #15 of 15
345? no way.
At peak load according to a PSU calculator your looking at atleast 463w under full load (didn't even put in any other components besides i5 760 and an GTX580).
A delta above 15c is bad, above 20c is terrible.
    
CPUMotherboardGraphicsRAM
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Microsoft SideWinder X6 Corsair AX1200 Corsair 700D Logitech G9x 
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CPUMotherboardGraphicsRAM
i5 2500K 5GHz @ 1.36 ASUS Maximus IV 2x EVGA GTX470 8GB G.Skill Ripjaws-X DDR3 @ 1632Mhz 1.5v 
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