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Wipster
07-20-2011, 11:41 AM
Evening all.

Can I grab a bit of advice on suitable radiators to go with my choice of fans or indeed suggest any alternative I could research?
Here is the loop so you can get an idea of flowrate, because I'm not entirely sure what it will end up at. Martins spreadsheet[1] works out at 1.09GPM +-20% so that sounds in the right ball park.
I'm going with a Apogee XT seriesed with two parallel Koolance 580 blocks so pretty low/normal restriction blocks. A MCP355 18W pump with the XSPC v3 top. And a yet to be decided 240 and 360 radiator. In all I'm expecting to sink around 600-700W of heat at max OC. Here is my design if your interested.

http://img41.imageshack.us/img41/5738/compql.jpg

I'm basing my fan choice on a rather old review from Martin on XS[2] and I am targeting low noise, it seems that a Gentle Typhoon AP-15 is what I need topping out at at 34ish CFM, if I look across on the CFM/RPM graph I see it matches with Skinnee's fan of choice, D12SH12, at ~2100RPM.
So taking this information to Skinnees triple rad comparison[3] I see that the GTX360 is pulling away from the others at this RPM, so is this a reasonable choice for this fan? Or would an all-round rad like the PA120 series better suit so I can scale back the fans if I want to without a big drop in performance.
Bit long winded I know, does it show this is my first loop and I'm a bit of a numbers freak? :S

[1] http://martinsliquidlab.org/pump-and-radiator-optimizer-spreadsheet/
[2] http://www.madshrimps.be/articles/article/936/30x-120mm-Fans-Roundup-Tested-on-WC-Radiator/32#axzz1SflYlTKA
[3] http://skinneelabs.com/triple-radiator-comparison-v2/4/

musicfan
07-20-2011, 12:27 PM
The most popular medium speed fan is still the Gentle Typhoon AP15 1850 rpm because of the noise per cfm and subjective preference. But a Yate Loon D12SH12-12 on a fan controller also works well and is cheap - some have noticed wobble using a sleeve bearing fan with horizontal mounting but that is hard to quantify.

The link you provided to triple rads is a good one. At 700 Watts and 120.5 worth of rad, you are asking each 120.1 to cool 140W. So a 120.3 would be cooling 420W in series. Using the 120.3 rad figures...the GTX360 at has a delta T at 1000 rpm and 1800 rpm of 15.4°C and 6.13°C respectively; while the SR-1 is 11.94°C and 7.68°C; and the Swiftech MCR 320 QP is 12.06°C and 7.53°C. With the worst load delta T at 7.53°C, I think you can go with any of those 3 radiators. The Swiftech will cost half the price of the HW-1 Labs. Good luck.:)