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why do people say the 355 is a little better? doesn't the 655 do 200 more GPH??

also how does the pump in that RASA kit compare?
 

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The 355 has more head pressure, making it more effective in longer or more restrictive loops. I prefer the 655 myself. Also the 355 is generally considered to have more aftermarket compatibility and availability of parts such as tops and integrated reservoirs. Also worth noting is that the stock 355 has 3/8" barbs where the stock 655 has 1/2" barbs.
 

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Quote:
Originally Posted by Jomboh;12016785
MCP355 has more heads ==> more constant flow
it also had more choice when it comes to aftermarket tops
More head does not mean more constant flow.

There is a head vs flowate curve. The better choice on which pump to use depends on the restrictiveness of the loop.

For example, if your loop provides the restriction equivalent to 5ft.... The D5 would do around 90gal/hr while the DDC would do 84gal/hr.

D5:
flow_pressure_12V_1600w.jpg


DDC 3.2
ddc32_curve_750w.jpg
 

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DDC has a small profile too, I have one ready to go in an XSPC bay res
smile.gif
 

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Quote:
Originally Posted by wermad;12016986
DDC has a small profile too, I have one ready to go in an XSPC bay res
smile.gif
655 aint very big either when you take the stock crap out and put it in the xspc bay
tongue.gif
 

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There is also a noise difference between the two. The 655 can't be heard, while the 355 is a slight hum. I have an ultra silent build for development and my 355 is the loudest thing in the case. I also have a gaming build with a 655 and I cannot hear it. When I'm less lazy, I plan on swapping the pumps so my silent rig is more.. well, silent.
 

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yea i cant hear my 655 at all i gota put my ear right to my res and shake my case to get it loud enugh to hear.
 

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Quote:
Originally Posted by SplashScreen;12016762
why do people say the 355 is a little better? doesn't the 655 do 200 more GPH??

also how does the pump in that RASA kit compare?
Imho the x2o pump that comes with the rasa kit pales in comparison with the 355/655. That's just me though.
 
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