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MCP655/655B vs 355, 35x - Page 2

post #11 of 16
Thread Starter 
If i did run 360mm rad and sit it outside, would 655 still be enough?

I don't intend on running any mobo blocks, don't think they even make mobo blocks for mine. but possibly another 570 down the road.

I'm trying to get the cost effective pump and "future proof" possibly. I guess if 35x is actually worth the money I don't mind it but I also want something that's enough for the system. It's contradicting i know =/

it's hard to make decisions because price difference of 655 and 35x is only about 10 bucks(price matched at ncix) and is the cheapest of all stores I can find up here in canada. and I can't seem to find 355 other than daz and with shipping from daz is already around 80 bucks eek.

all this WC stuff new so it's very exciting for me.

Quote:
Originally Posted by Defoler View Post
Price / performance wise, the 355 is better over the 35X. It cost a lot less, you can also get the PMP-400 which is a revision of the 355 for a lot less, and the difference isn't much.



To the OP:
Less restrictive short loops, go for the 655 or 655B (which is a fixed speed pump over the 655).

For very restrictive or longer loops, the 355 is best. If you have the $$, go for the 35X, but its not needed that much.

Edited by mekaw - 2/8/11 at 3:45pm
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post #12 of 16
For $10 the difference between those pumps is night and day. I would take the 35X over the 655 any day.
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post #13 of 16
Thread Starter 
also does anyone know if MCP350 8.3w can also be modded to 355? or is it just 10w with blue impeller?
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post #14 of 16
Some people say the D5 series is quieter, so a vario is always a good option for the noise freaks like me. I'm going to see if I can measure any differences in this regard pretty soon. I've got the PMP-400 (DDC3.25), PMP-450 (D5vario), & PMP-450S(D5 Strong). I think I've got a method figured out on the stand alone pumps to sort out which is actually better for noise. Subjectively, I do think the 450's are quieter..
    
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post #15 of 16
Thread Starter 
*EDIT I see it now they used LPM for 35x and LPH for 355

so im a little confused. according to swiftech, 355 has better flowrate?


35x
Max. nominal head (@12 V): 14.7 ft (4.4m)

Max nominal discharge (@12 V): ~ 4.75 GPM (17.5 LPM)


355
Nominal head (@ 12 V): 15 ft (4.5 m)

Nominal discharge (@ 12 V): ~ 120 GPH (454 LPH))


while their 35x chart comparison says the opposite.. and number given on spec for 355 is wrong?


Edited by mekaw - 2/9/11 at 10:23am
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post #16 of 16
One of those specs in in Litres per hour, the other is in liters per minute. Also, when you add a custom top to the MCP355 it's pressure curve becomes very similar to the MCP35X as well.
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