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Mcp655 -> mcp355

post #1 of 16
Thread Starter 
Hey fellas, My pump died, or is dying. I'm unsure. I hear this crazy loud clicking sound (as if something is caught in a fan, hitting the fan blade). I opened her up and noticed that things didn't fit as snuggly as I remember them being. I haven't had a chance to look at it really, maybe I will.

What I'd like to know is if I pick up the MCP355, will I see a big difference in water flow? The MCP655 might've been overkill, I don't even know, but it's a CPU only loop, and I've never had any other gear other than what I have now. I was thinking about doing a complete loop overhaul, so if you guys could tell me if I'd be safe downgrading pump... I'll prolly go for a new block and tubing and the whole kit.

Let me know
The Douchebag
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The Douchebag
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post #2 of 16
What will you have in your new loop?
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Quad Damage
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post #3 of 16
For a CPU only loop the performance difference between a 355 and a 655 is not going to be noticeable. With such little restriction the flow rate from a 655 is probably higher however your temperatures won't change as the flow rate in both cases will be greater than 1 GPM. If you add more blocks (and end up with a really restrictive loop) a 355 will outperform a 655.
 
HTPC
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HTPC
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post #4 of 16
Thread Starter 
Ah ben crisse smile.gif

Let's say I keep things as they are :

GTZ
240 Rad
crappy cylindrical res
~ 5 feet of tubing

would it be enough?
The Douchebag
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post #5 of 16
En masse.
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post #6 of 16
Either will do in that loop, the 355 is louder than the 655. I can't even hear my 655.
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post #7 of 16
Thread Starter 
Ok great, thanks for the clarification. I automatically assumed that a higher model number = better pump.

Question : Is my GTZ still good, or should I get something newer? I get decent temps : ~ 40 (24 ambient) @ 3.8 GHz with 1.5v
The Douchebag
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post #8 of 16
you mean 40 full load or idle ?
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post #9 of 16
Thread Starter 
Full, full load. Prime blend to be exact.

Yes yes I know it'll be higher with linpack and small fftssssss
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The Douchebag
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post #10 of 16
Thread Starter 
I saw a few charts that say that the GTZ is still a good block. Can anyone confirm this for me? Should I keep it??
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The Douchebag
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