silent pump

[MJR]

I'm putting together a WC setup in anticipation of a Quadcore setup (Kensfield or possibly waiting for Yorkfield) What are the most silent pumps that can be recomended for a CPU and chipset loop? Right now it looks like both the DD and Swiftec are in the 22-25db range. Anything quieter that's worth dealing with?

Thanks for the help.

[depravedone]

MCP-350 or MCP-355 is very quiet as long as you properly isolate them from the chassis. With rubber feet, sitting on a 1/4" thick foam pad, I can't hear my MCP-350 with side panel on the case.

[MJR]

Like this stuff from Petra's? or do you recomend something else?

http://www.petrastechshop.com/pegviabbl.html

[leewink]

Laing DDC's, volt drop them to 7.8v and that'll be in-audible.

I'm waiting on delivery of an Aqua Computer power adjust this coming week that will let me do it, if your more DIY orientated like i'm not, then wire it to do it.

Same 'ole story though, flow isn't everything, anything over 200ltr/h is adequate, and over 300 is overkill, if you think its not, then leave the silencing excercise alone and stick to the 12v standard noisy b&st&rds

Mine runs at (or will) about 200ltr/h, and with 3x120 fans at 9 ish v too giving about 70cfm collective, mine will be super silent, and do a very similar job to all the noisy efforts you read about here, there is little difference in mine to running it 12v, but thats upto you to test if your unsure of my theories, i'm happy though with my testing

[MJR]

Do you have the 18w or 9w version? Also, are there any dangers (aside from flow rate) in running a pump so close to it's minimun recomended voltage?

Additional Comment:

Originally Posted by leewink

Same 'ole story though, flow isn't everything, anything over 200ltr/h is adequate, and over 300 is overkill, if you think its not, then leave the silencing excercise alone and stick to the 12v standard noisy b&st&rds

Mine runs at (or will) about 200ltr/h, and with 3x120 fans at 9 ish v too giving about 70cfm collective, mine will be super silent, and do a very similar job to all the noisy efforts you read about here, there is little difference in mine to running it 12v, but thats upto you to test if your unsure of my theories, i'm happy though with my testing

is that litre per hour or were you talking about gallon per hour?

[depravedone]

I would rather run the pump at a little higher speed than risk having the thing stall on me. At least with the MCP-350 I'm running, there is a speed sensor output that you can plug in and monitor on your motherboard. Then you could have an automatic shutdown on pump failure.

[MU71L4710N]

Originally Posted by iadstudio

Do you have the 18w or 9w version? Also, are there any dangers (aside from flow rate) in running a pump so close to it's minimun recomended voltage?

Additional Comment:



is that litre per hour or were you talking about gallon per hour?

pretty sure thats litre per hr cuz he lives in europe...they dont use gallons

id just get a D5/655. almost silent....i have "silent" case fans that make far more noise than my pump does. only reaosn the pump makes noise is when air gets in the loop. you COULD run it lower i suppose, i always just leave mine on max i think its better for the pump. in my logic running it at lower speeds makes it stress (i seem to remember a while back dangerden even reccomended just leaving it on 5, as it will make pump life longer).

[leewink]

It is LTR/H i'm on about yes.

And just to set straight on the "running close to stalling" thats suggested, the Aqua Computer power adjust has a re-start feature, this boosts at 12v and then drops, so stalling is impossible.

And I have the 11w version, this runs 400 ltr/h standard 12v, and then I volt dropped it and my loop has lots of elbows in it too, so I suggest somewhere near the 200 ltr/h mark, and before the comments it makes no difference to me to run elbows either, as i'm looking for minimal flow and silence with NO real downside effects.

[depravedone]

The Aqua Computer might prevent stalling, but if you're adjusting the power some other way it could happen. As for correcting my remarks on stalling, I call BS on that because I never once claimed to be talking about the Aqua computer. Why not provide links for this product as I dont recall anyone here discussing it in the past.

[leewink]

Come off ya high horse, I simply meant if your good at electronics you could imitate it somewhat, again twisted into some other meaning to suit your self only.

I run mine off a simple "plug in the wall" vario adaptor, runs 3v, 6v, 7.5v, 9v and 12v.

It runs fine on 9v, but if I switch it to 7.5v I can hear the pump pulsing to start but doesn't run, hence why the Power Adjust runs at about 7.8v, to give that little bit more to run, and obviously why it has the re-start feature.

It also runs on USB direct to the mobo for "on screen" adjustments too, and can run a flow meter.

And just for you here's the link, and if you go to aquacomputer.de they also ship to the states I believe.

"Why not provide links for this product as I dont recall anyone here discussing it in the past."

I'll twist this to mean you've never heard of it, or put in any type of research to find what is a common fault of 12v pumps that is noise, apart from pumps that have a potentiometer on them.

But as i've done my research before throwing my toys out of the pram, here you go :-

http://www.aqua-pcs.co.uk/index.asp?...&productid=377

- OR -

http://www.aqua-computer.de/e_index.htm

[depravedone]

Originally Posted by leewink

Come off ya high horse, I simply meant if your good at electronics you could imitate it somewhat, again twisted into some other meaning to suit your self only.

I run mine off a simple "plug in the wall" vario adaptor, runs 3v, 6v, 7.5v, 9v and 12v.

It runs fine on 9v, but if I switch it to 7.5v I can hear the pump pulsing to start but doesn't run, hence why the Power Adjust runs at about 7.8v, to give that little bit more to run, and obviously why it has the re-start feature.

It also runs on USB direct to the mobo for "on screen" adjustments too, and can run a flow meter.

And just for you here's the link, and if you go to aquacomputer.de they also ship to the states I believe.

"Why not provide links for this product as I dont recall anyone here discussing it in the past."

I'll twist this to mean you've never heard of it, or put in any type of research to find what is a common fault of 12v pumps that is noise, apart from pumps that have a potentiometer on them.

But as i've done my research before throwing my toys out of the pram, here you go :-

http://www.aqua-pcs.co.uk/index.asp?...&productid=377

- OR -

http://www.aqua-computer.de/e_index.htm

You specifically slapped me down for the mention of "stalling" at lower voltages. Then in your response pointed out that your own pump will stall below 7.5 volts. Don't post a condescending and arrogant response and expect not to get called out on it.

[ricecrispi]

Old DDC's won't start at 7 V and 8V it has a chance or not spinning. Lowest I would say to leave a a DDC is 9V.

They have REV. 3 DDC and DDC+ so they might start at lower voltage. The DDC is noticeably quieter than D5/mcp 655

[leewink]

"You specifically slapped me down for the mention of "stalling" at lower voltages. Then in your response pointed out that your own pump will stall below 7.5 volts. Don't post a condescending and arrogant response and expect not to get called out on it."

I also said at 7.8v is the lowest that a poweradjust runs at.

I DID NOT say my own pump will stall below 7.5v either, at 7.5v it pulses but doesn't start.

Yes my pump wont run at 7.5v, it needs more voltage, NOT as you say "below" 7.5v, it will need at least 7.8v AS I'VE SAID ALREADY.

Don't post "guessed at comments", and rushed posts that just cause arguement then.

As far as called out goes too, don't try then to make everyone look muppets for suggesting something that you haven't read in a book then, or with an item of equipment you think doesn't exist.

Some of us want a "non-market lead" system, that is silent and efficient, thats the thread yea ?

And next time someone posts something that you clearly have no clue on, ask politely instead of just blasting them with "BS", remember thats how this started before this gets closed, a fault not of my own, I just choose not to sit in the corner.

I treat people as they treat me, a good way of life.

And the power adjust also runs from 65% power (7.8v) up in tiny % increments, so to run at any pumping voltage is possible, and this can all be set on the desktop if you like too via USB and the supplied software - or by jumper setting as a "set and forget" (although this way is more limiting to voltage settings), and yes, the DDC is quieter as you say (answer to ricecrispi).

[ricecrispi]

Doesn't matter since you can only get Rev. 2 DDC used or in prepackaged kits.

They are shipping Rev 3. which has new circuitry, RPMs, flowrates, and head. IMO DDC is silent at 12V for most users. For those silent nuts 9V is enough but there is an inherent risk you have to consider.

IF you don't have temp shutdown and run it at 8V it takes only once for pump to stall, heat the WB and pop tubing off the waterblock and ruin the rig. So you must have shutdown temp enabled and undervolt the pump to limit that risk or buy what leewink has.

Liang, the manufacturer of these pumps released a REV 2 for this startup problem at 12V. The Rev. 3 was basically to make the DCC+ more reliable after what i believe is heat related failures.

[jesussaves]

I have the D5/655 on highest flow setting, and its silent. Mounted on the foam foot thingy.

[])utch^]

My 655 is really quiet, It comes with a foam pad, , both sides have self stick tape. I didn't feel the need to lower the voltage. But this pump has the ability to adjust speeds if you need. Just don't buy the 655 "B" version.

[depravedone]

That Aquacomputer controller looks nice, but if there's no US distributors I'd have to pass. With the weak dollar and the slower shipping from across the pond, I'm not sure it would be worth it for a yankee like me.

[ricecrispi]

Thats good you guys think the D5 is quiet but it relative to the person and I feel the D5 is quiet enough for 95% of computer users. I've had or still own mcp300, ehiem 1250, mcp 600, mcp 650, mcp 655, mcp 350(ddc), hydor l30s and l35. DDC is easiest the quietest pump and side by side by D5 it noticeably quieter.

[leewink]

A US distributor ? oki, here you go :-

http://www.sharkacomputers.com/laddcpoad.html

lovely jubbly

Additional Comment:

Oki, fitted the power adjust today, set at 65% power and its deadly silent, my 3x akasa orange super silent fans on 9v are noisier

Best purchase this year

[MJR]

are there any bay mounted reservoir/pump combos that can be recommended? I found some Koolance at Frozencpu.

Anybody have experience with these? Recomendations or warnings are appreciated. I'd be tempted to get the Koolance RP-1000BK 1kW Series or the Koolance RP-950 If they come recomended.

EDIT:
Nevermind on the bay reservoir idea. I read up a little more and I think I'll go with the "T" joint method and no reservoir. That leaves more room in my bays for the Aqua Computer.