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MCP655 Running 24/7 ?

A

annaconda

[H]F Junkie
Joined
Apr 13, 2005
Messages
9,925
Ok guys is it ok to let the pump run 24/7 forever? This pump is rated for 24W damn lots of power needed, my CPU is only 65W.
 
I run mine 24/7, never think twice about it. I run mine at 4 though, 5 is too annoying for my tastes.
 
It's rated at 50K hrs. MTBF, so as long as you're not planning to run it more than five years straight I'd say yes. Might want to poke your head in there once in a while though, just to be sure the rest of your loop is OK with it.
 
I had a D4 that I ran 24/7 and I've run my D5 24/7 for pretty good lengths of time. Neither one died (the D4 was retired for the D5 and the D5 still runs (though not 24/7 any more)).
 
I never tried to change the speed, so is it more quite at 4 instead of 5? Does it will effect the cooling performace.
 
It is really annoying at 5 speed. Since every thing else is passive in the system, the pump is really loud in the night when you are sleeping 4 feet from the computer.

Low speed means it will put less heat in the water too right? and low noise. Can i switch the speed while it is running or should i shut down?
 
You can turn the dial while it's running. That's how I've always done it.
 
Mark305TBI said:
You can turn the dial while it's running. That's how I've always done it.
Click to expand...

Yep, same here. I find 4 to be considerably quieter than 5 but the flow is close enough that it doesn't make your cooling suffer.
 
been running my mcp655 at 5 for 1 1/2 years now...pretty much 24/7 with an occasional switching off of the computer here and there...
 
Any one tried running D5 at 24v? According to the label on the pump it works from 8v to 24v, I'm wondering what would be my temps if i would plug external PS that has output of 24v :p

annaconda said:
This pump is rated for 24W
Click to expand...
Correction, 33W :p at full speed.



 
Lies all lies!! :D

Well just think about it... You know the TDX's design right? Theoretically the faster water goes trough the TDX's nozzle the faster it will take out the heat from the block and it will make heat sink colder.

That's just my thinking :p
 
Well, that IS the theory behind the TDX (and storm block) but going from 2-5 on my pump (with the TDX before it broke) didn't do anything for my temps :p.
 
i don't run mine 24/7 but that's just bec i choose to turn my pc off when i'm away from home
 
malicious said:
i don't run mine 24/7 but that's just bec i choose to turn my pc off when i'm away from home
Click to expand...

Yeah, mine doesn't run 24/7 any more because I started puttin my machines in Stand By when they're not in use.
 
Vlad_13 said:
Any one tried running D5 at 24v? According to the label on the pump it works from 8v to 24v, I'm wondering what would be my temps if i would plug external PS that has output of 24v :p


Correction, 33W :p at full speed.[/URL]
Click to expand...

Correction: 33W @ 24V. 24W @ 12V.
 
Vlad_13 said:
Don't you see words like full speed? Full speed means 24v, 33W.
Here, I'll quote my self.
Click to expand...

To me full speed means on 5 at whatever voltage you're running it at which is what Annaconda was saying 24W is the rating, 12V. You just HAD to correct him with the 33W figure which is not correct for the voltage HE was referring to.

Had you qualified your statement with the rating is 33W at 24V I wouldn't have corrected you since you would have been correct.
 
By lowering the speed to 4 will it Lower the Power Consumption? I think it should, it is common sense low speed low power right?
 
that is correct lowering the number lowers the voltage spins the prop slower and moves less water - normally less flow = bad for temps

i tested my D5 on my old opty 144 doing 3.1ghz and the temp difference was 1C from 5 -> 1

sounds crazy but it sat there and watched my temps while it was priming ... turned it down and it only dropped 1C...

i know the temp measurement is probably not ligaments but it's probably reliable
 
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