Help With 2nd Pump

[Rebellion]

Hi all

So I have got my hand on a 2nd pump (liang DDC) for my loop, but I cant decide where or how to add it.

Im currently using an xspc dual bay res for a single ddc pump.
Here a pic on my rig for reference:
129583

Do i simply add it in somewhere or go for a dual top with new res, or possibly a bay res that can take 2x ddc.
Does anyone of these option yield better results, or is there another way you know of?
My pc specs are in my Sig

Thanks for any help/feedback

Regards

[musicfan]

Unless there are flow problems, adding a second pump is unlikely to make large temperature improvements. Your blocks are not restrictive but don't about the chipset.

Some like pump redundancy although that can mean more noise. Here is a link from Martinm210 (http://martinsliquidlab.org/2011/04/26/pump-setup-series-vs-parallel/3/) discussing setting up multiple pumps. You can add it serially where it is easiest although with the native 3/8" and what looks like big tubing, easiest may be a bay res with built-in tops if you like that style.

If you wish to discuss more, can you tell us the models? The higher Watt DDC will usually be noisier but provide better flow than the lower Watt model. Good luck. :)

[lowfat]

You'll get no temperature improvement by adding the second pump. You'll gain redundancy and flow rate. Your loop isn't restrictive though, so your pump temperature will likely go way up. IMO stick w/ one pump unless you plan on slowing down the loops or install heatsinks on both DDCs.

[Rebellion]

Hi thanks for the reply's
I think both pumps are the lower watt models, is there a way of checking?
The reason for 2nd pump is firstly for redundancy and this being my first build ive caught the water-cooling bug, so im sure ill be adding and changing things about, more rad and blocks for oc'ing etc.
I didn't realise having a 2nd pump would make them hot, but i have found this (not sure if it would work) :http://www.swiftech.com/MCP35X2-HS.aspx after reading your advice
Im guessing that heatsink + a suitable top/res would be best for me

Thanks Again

[musicfan]

Hi Rebellion, I have the larger D5's so am going based on what I read. You can read the label or Google images. Sometimes the wiring is a clue. Perhaps others will comment. Here is my understanding:

1. The "lower Watt" DDC would likely be around 9 or 10 Watts, labeled a DDC 3.1 or Swiftech mcp350 (http://www.performance-pcs.com/catalog/index.php?main_page=product_info&cPath=59_201&products_id=2539) or Laing DDC 1 or 1t, and is discussed here by Martinm210 (http://martinsliquidlab.org/2011/03/09/laing-ddc-1-ddc-1t/).

2. The "higher Watt" DDC would be around 18 Watts and labeled a DDC 3.2, Swiftech mcp355 or Laing DDC 1t plus (http://www.performance-pcs.com/catalog/index.php?main_page=product_info&products_id=32773).

There are variations and some can be converted by soldering but that's a general guide. Here is a thread discussing the mcp350 v. 355 (http://www.overclock.net/t/769496/mcp350-vs-mcp355).

The higher Watt has more power but will get hotter faster, particularly with a low resistance loop, which increases pump flow. The Swiftech top would allow you to harness the power of your pumps with convenient G 1/4" ports. The heatsink would help keep it cooler. But if you are firmly committed to using two potentially hot & loud DDC pump 3.1/3.2 pumps on a low resistance loop, you may wish to consider a device that will allow you to lower the voltage to your pumps to cool them off and make them less noisy. Typical low-cost fan controllers can get hot controlling DDC fans as Martinm210 describes at his site. Some use a pump controller (http://koolance.com/index.php?route=product/category&path=69) to under-volt the pumps to control heat & noise. Otherwise, use good air-flow to control heat and rubber washers to control noise from vibration. Good luck. :)

[Rebellion]

Hi thanks for the reply, and helpful links.
I realise now that this loop is low restriction, but I am planning on adding to it in time. ie sli card, and full motherboard blocks.
I think I will go for the heatsink and keep an eye on temps, if too hot I will go for one of those pump controllers you mentioned.
After looking at the pumps im pretty sure they are the lower powered ones.
With my current pump set-up I haven't noticed any noise from my pump so im hoping I will be ok with the 2nd.

Thanks again