How many pumps (PMP-500) do i need ?

[ysandler]

My loop setup is:
CPU Block - Koolance CPU-380i
GPU Block - Two of HEATKILLER® GPU-X³ GTX 780-TITAN "Hole Edition"
Radiator - HX-CU1020VS (Triple, 20 FPI), HX-CU1320V (Quad, 30 FPI), Alphacool NexXxoS Monsta 480 (Quad)
Reservoir - Koolance BDY-TK200
Tubing - PrimoChill PrimoFlex Advanced LRT 1/2in.ID x 3/4in.OD Tubing- Crystal Clear (~10ft)
Coolant - Mayhems Pastel
Chassis - Corsair 900D
Controller - Lamptron CW611

I want to buy PMP-500 pump(s), is 1 pump enough or i need 2 ?

Thank you

[Izerous]

One lone pmp-500 is sufficient if on a budget but I'll note 2 things.

1: Redundancy is always nice to have with 2 pumps in series (not parallel) at least if one pump dies you still have circulation.
2: Not that I have played with one but the PMP-500 is supposedly louder than either the PMP-400 or the PMP-450. If noise levels are super important to you you may want to change to one of those instead.

The above to reasons are why I went with Dual PMP-450's that are mounted through rubber vibration dampeners to make sure things were as quiet as possible. I don't even use speakers most of the time, I'll usually use my headphones sitting on my desk as speakers and I have had jet engine sounds from my computer in the past I prefer the near silence of my current build.

[Fluxc0re]

I would say 1 pump would do it but the only thing I wouldn't like about 1 pump is that you
would have to run it at full pressure/speed to get max flow. That is not a good idea .
If you used 2 pumps you could put them in different parts of the loop and run them
at a lower pressure/speed and still keep your flow up with less pressure . Way safer .
But i really wouldn't use that pastel stuff in a nice setup like that .
Please don't use that coolant in your system . Please.
It makes me crazed to think you are going to use that stuff in a nice rig like that .

http://www.xtremesystems.org/forums/sho ... ot-Problem

[ysandler]

Thank you very much for the reply.
My build will be changed a bit, thinking about 1 450s, maybe 2.
About the coolant, that person used tygon tubing with plasticizer .... i am going to use tubing that was tested with this coolant.
Will continue my research about the number of pumps needed and will update here on the final setup and performance.

[davidm71]

So the PMP-500 is a bad product considering the noise?

[Izerous]

It's ratings don't make it an annoyingly loud pump, just louder than a 450/450s would be and rubber mounting it to reduce the vibration noise would probably go a long ways.

Now if it was as loud as the TK-123 fans I had experimented with (64dba in free air let alone mounted to a radiator) then I'd call it a bad pump.