Choosing The Best Pump for Your WaterCooling System

[MaxxxRacer]

creidiki, got any PDF's or anything on it? I need solid data to be able to add it to the list.

[creidiki]

Unfortunately Laing Thermotech doesent have any PDFs for the Delphi (what they call the DDC-1)

[MaxxxRacer]

Well without any hard info or reviews (robotech style) I ralely cant pu a pump up there.

[Skulldor]

6m of head with 6.6gpm max. looks like a sweet pump. Ya ive seen it before. Not much info on it though.

its a shame it uses 1/4" fittings

Can't it use these fittings?

http://www.frozencpu.com/ex-tub-116.html

[placebo]

Hmmmm... very interesting thread....! So, what's the bottom line here...? Iwaki RD series supposed to and/or appears to be about the best pump? (RD 20/30 to be precise)

[MaxxxRacer]

RD20 is the optimum pump for ppl with normal sized rads.. if you have say a monstercore with 220cfm deltas, the RD30 is the best.

[placebo]

RD20 is the optimum pump for ppl with normal sized rads.. if you have say a monstercore with 220cfm deltas, the RD30 is the best.

Any idea on the pricing difference between the RD models? (I mean, I am about to find out myself... But it's not like those people work on weekends...lol)

Very much appreciate the info!

[MaxxxRacer]

no idea...

[mjgent]

Any idea on the pricing difference between the RD models? (I mean, I am about to find out myself... But it's not like those people work on weekends...lol)

Very much appreciate the info!

About $18 wholesale (RD20 being cheaper). I don't know about retail though.

[Viktor]

Just installed my watercooling setup, using a Laing D5, but on the highest setting, the pump gives me this high-pitch tone, really annoying.
Anyone knows if the pump supposed to sound like this ?

[Primoz78]

Just installed my watercooling setup, using a Laing D5, but on the highest setting, the pump gives me this high-pitch tone, really annoying.
Anyone knows if the pump supposed to sound like this ?

I`m about to buy the D-5 pupm...so I`m interested in this too...

Regards,
Primoz

[no_n|ck]

Where could i get something that my 50z would work on 13.8v power? And that is powerd by psu (molex) not AC!

[The B]

Hi!

I have an Iwaki pump. Model: MD-20RM-220No1. I can’t seem to find any info about it on the Internet. But on the pump itself it says:
Max capacity: 27 l/min
Max head: 3.1 m
The pump works very well. It lowered my temps about 3-5°C.
But there are two things I’m not happy about:
It gets VERY hot. It’s hard to keep a finger on it. And I have 20°C in my room. In the summer it will get to 30°C. Is it going to melt?
It is pretty loud. It’s the loudest thing in my room. I have it sitting on a piece of foam as it vibrates a lot. But it is noisy without vibration. Is it supposed to be that way? I think it has gotten more quiet with time. But it could also be that I got used to it.

B

[chunkylover77]

Iwaki's get very hot. That is good as they don't dump that heat into the water. They should not get very loud. In fact my md20 was near silent. You might have some air bubbles in there.

[creidiki]

IIRC, the iwaki manual for the MD-20 states something like "if you can pick it up without screaming out, its not too hot".

Ive also heard that sometimes putting a little more restriction in your loop - slightly crimping a tube - will silence it, but considering how powerful those things are, its probably air.

[Paapaa]

There is a great pump comparison at Cooling Masters (in French, translation works well):

http://www.cooling-masters.com/articles-33-0.html

Summary:

DDC (10W version) has the best noise/performace ratio - it is the most silent pump. In high restriction systems it has almost identical performace as MCP655/D5 but less noise! Only in low restriction systems D5 has an advantage. DDC also outputs very little heat into the system: D5 warms the water over twice as fast as DDC. This makes up for slightly lower performance. Plastic construction also helps to keep the pump heat out of the water. Of course, the inlet mod might make DDC perform even better, depending on the system.

I hope the older 10W version is still being manufactured in spite of the new 18W DDC - the new version might be louder.

[sponge bob]

what about that Alphacool AP1510 ?
http://www.alphacool.de/xt/product_i...p-12volts.html

cpu block will be nexxos xp, gpu block is home made :P radiotor will be BIP3 triple + 3x TT smartfan :P 120mm @3500 rpm

[MaxxxRacer]

from the specs that pump looks to be totaly kick ass. Dont know about the build quality, but it deffinetly has alot of potential. Very low power conumption too.

[Fairydust]

The figures fo power consumption are given for 12 Volt use while the rest is given for 24 Volts, it needs 40+ Watts at 24 Volt.

[Cordovader]

what about that Alphacool AP1510 ?
http://www.alphacool.de/xt/product_i...p-12volts.html

cpu block will be nexxos xp, gpu block is home made :P radiotor will be BIP3 triple + 3x TT smartfan :P 120mm @3500 rpm

I´m currently using this pump on my watercooling setup (Storm rev.2,PA160...)

I´ve used a Laing D5 for my last WC setup so this time i´ve decided to change. Results so far (my watercooling knowledge is very limited ) are fine to me.

At 12v (the lowest) the pump is very silent & performs well. My 24/7 rig is the X2 3800 on my sig at 280x10 1,41v. Idles at 28c & 36-38c at full load (dual SP2004). Ambient temps are always between 22-25c.

At 24v the pump is clearly audible & vibrate like a mad I only get about 1c gain at 24v, probably because it´s more a matter of the radiator than the pump (i think).

[The B]

Iwaki's get very hot. That is good as they don't dump that heat into the water. They should not get very loud. In fact my md20 was near silent. You might have some air bubbles in there.

This is my second pump. The first was Hydor seltz L20 and compared to that Iwaki is A LOT louder.

I don't know if there is air in the system. I changed to silicone tubing and since then (4 months) I have to add coolant every two weeks. Silicone is supposed to loose some water to evaporation but maybe this is to much?

B

[Fairydust]

Alphacool has expanded its range of Laing offerings by adding some industrial pumps of the S/T 5/6 series with 100 Watt! Power draw and flowrates like your average Storm drain with 5,8-6,1 mH2O head pressure. Have they gone mad?

[MaxxxRacer]

Anything over ~50watts of input power is totaly useless..

[Fairydust]

Ya, funny part is they state watercooling as 1 of it's main applications, twice actually :P

Edit: nm, Andersson.J already posted it

[Paapaa]

Alphacool has expanded its range of Laing by adding some industrial pumps of the S/T 5/6 series with 100 Watt!

That is 120W more heat to remove and 120W more energy drawn from the wall (with good efficiency PSU). Just stupid.