How much does a pump strain a power supply.

[tajoh111]

I am just getting into water cooling and I think the energy of my powersupply is just enough for the the system. I think I have maybe 100 W extra. How much strain does water cooling put, power wise. E.g mostly the PUMP, i guess and 2 fans to cool the radiator.

[skinnee]

MCP655/Laing D5 - 12v @ 2amps = 24 watts
MCP350/DDC 3.1 - 8-13.2v @ 0.69-1amps = 13.2 watts max
MCP355/DDC 3.2 - 8-13.2v @ 1.16-1.58amps = 20.856 watts max

Lookup the DC Voltage and Amp draw of the fans, watts is volts x amps. For example, Yate Loon D12SM-12's are 12v x .3 amps or 3.6watts per fan.

edit:
Hey BlueAqua...neener, neener, neener. :D

[BlueAqua]

Check out each pumps ratings on your favorite retailer's website. They should have the information

For instance. MCP-655 Nominal power (@ 12 V) 24 W

Edit:
Damn you skinnee, you beat me to it, AND had a better answer. :rofl:

[TedShred]

there's probably guys here (edit: no doubt there's guys here...:D) that can answer that off the top of their heads, but fwiw this psu calc might help in identifying the power draw of various components including pumps

http://extreme.outervision.com/psucalculatorlite.jsp

[NaeKuh]

there's probably guys here that can answer that off the top of their heads, but fwiw this psu calc might help in identifying the power draw of various components including pumps

http://extreme.outervision.com/psucalculatorlite.jsp

Yeah Skinnee :rofl:

MCP655/Laing D5 - 12v @ 2amps = 24 watts
MCP350/DDC 3.1 - 8-13.2v @ 0.69-1amps = 13.2 watts max
MCP355/DDC 3.2 - 8-13.2v @ 1.16-1.58amps = 20.856 watts max

Lookup the DC Voltage and Amp draw of the fans, watts is volts x amps. For example, Yate Loon D12SM-12's are 12v x .3 amps or 3.6watts per fan.


:up:

[skinnee]

Yeah...I remember really odd stuff. Power draw is one of those wacky things I remember after reading. I have to admit to looking up the range on the 350 and 355, I remembered the overall, but not the range.

[BlueAqua]

One thing Skinnee forgot was the man sized pump. The RD30 big man edition.

Nominal power (@ 24 V) 45 W

:rofl:

[skinnee]

doh!

[tajoh111]

Thanks for the quick response. That was crazy fast.

[Hondacity]

with everything running

http://i24.photobucket.com/albums/c5/hondacity25/P1010708.jpg

ddc3.2 off

http://i24.photobucket.com/albums/c5/hondacity25/P1010710.jpg

you get the picture...

[IanY]

PSUs are overbuilt. I cannot envision a pump's power draw to be significant, even if a D5 shows 24 watts.

[Hondacity]

not all psus are created equal..my psu can't even handle 3pumps and 18fans its embarassing...oh yeah i even tried the videocard rails to distribute the load..its not happy..but it works just without the my wc setup

[bigslappy]

not all psus are created equal..my psu can't even handle 3pumps and 18fans its embarassing...oh yeah i even tried the videocard rails to distribute the load..its not happy..but it works just without the my wc setup

that's why it is best to get single rail psu's
multi's split the power unto all the rails soo if one rail needs more power it can not get it as it's already split

simply stated of coarse ! & I M H O also ! :cool:

[KaptCrunch]

that's why it is best to get single rail psu's
multi's split the power unto all the rails soo if one rail needs more power it can not get it as it's already split

simply stated of coarse ! & I M H O also ! :cool:

correct or use an old atx psu, to off load the overloaded case psu transformer

[skinnee]

I'm a single rail PSU person as well, always have been rock solid for me.

[T_Flight]

Yesir! Single rail PSU's only for me too. In my current system is a PowerStream 520 with a big bad 30 amp 12+ rail. At the time it was a very strong unit and still is.

On my new build I have a OCZ EliteXtream 1000 with 80 amps on the 12+ rail. I always look VERY carefully at PSU's when I do a build. I get enough PSU where I know it will never be loaded more than 50-80% of its rated capacity. That keeps them efficient and keeps the voltages nice and stable.

This new unit I bought for my new build has been tested to max for hours on end ina torture test that would kill lesser PSU's and it earned a gold award. The testing done at [H]ardOCP is a torture test designed for the most extreme of uses...more extreme than we'd ever actually have in actual use. They actually expect most units to fail, and up until recently, most have.

If you have 4x20 amp rails and you have a video card that needs 30a, then you're just out of luck, but if you have a single 80 you're in buisness and it'll keep right on plugging away. Both PSU's have the same effective rating.

The amps are the "balls" of the CPU. It's the first thing I look at..."Is it a single rail? How many amps?"

The PSU is one of the most important parts of a system, and it's where I start with a build. Everything in the system is based around that.

[septim]

lucky for rd30 users there's a meanwell for them...

[Hondacity]

wow...multi rail and single rail discussion...i'm not going in there.

[veedubfreak]

Ya this is why i went with the TX 750. Nice fat single 60a rail for under 100 bucks :) Now to figure out if it can handle the quad/water and a third 260 :p