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mcp355 w/ top vs mcp35x

post #1 of 27
Thread Starter 
Does an mcp 355 with xspc res/top perform about the same as an mcp 35x? They look the same.
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post #2 of 27
Quote:
Originally Posted by AliceInChains;13520119 
Does an mcp 355 with xspc res/top perform about the same as an mcp 35x? They look the same.

Not quite, the 35X motor is slightly different and holds higher RPMs at higher flow rates producing a slightly stronger curve.

35xvs325xspc1.png

35xvs325xspc2.png
    
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post #3 of 27
Thread Starter 
But in most cases all that extra power the 35x has isn't needed right? In my case 1 CPU block, 2 full cover VGA blocks, 1 360 mm rad and 1 120 mm rad
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post #4 of 27
D5 is the best for your loop
post #5 of 27
35X's are generally better if you have a restrictive loop. If you are going for all-round performance and silence, go with what nowwater said and get a D5. The good thing about 35X's is they have built in relays which allows you to control the pump speed using your motherboard's PWM connector.

The good thing about D5's is they have a variable speed setting which allows you to make it as quiet as you want. Saying this, though, the relay I mentioned on the 35X allows you to do this too.

Back to your original question, the 35X should perform better than a 355 with a top at full RPM due to the higher RPM capabilities thus producing the stronger curve Martin mentioned.
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post #6 of 27
Quote:
Originally Posted by AliceInChains;13520296 
But in most cases all that extra power the 35x has isn't needed right? In my case 1 CPU block, 2 full cover VGA blocks, 1 360 mm rad and 1 120 mm rad

Not idling and under normal system use. Possibly not even with the system under full load.
I've got 2 of the MCP35x pumps in a series loop. I have them set up so they run at 50% max, but even with full CPU and GPU load, I get the same temperatures with both pumps at 50% as I do with them at 40% or 100%.

The great thing about the MCP35x is that, depending on your motherboard, set it up so its speed is controlled via PWM based on CPU temperature.
If you use Speedfan, you can set it up to control the pump speed based on CPU or GPU temperature.
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post #7 of 27
Thread Starter 
I guess what im asking is do I need a 35x, or is the 355 with top sufficient? Do you think if I use a 355 with the xspc res/top my flow would drop below 1gpm?
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post #8 of 27
What blocks/components are you planning to run?
    
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post #9 of 27
Thread Starter 
Quote:
Originally Posted by Martinm210;13520549 
What blocks/components are you planning to run?

xspc rasa block, 2x ek 570/580 full cover blocks, 1x rx360 rad, 1x 120 rad(dont remember the model)
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post #10 of 27
Thread Starter 
heres the thing, Ive gotten a really good deal on a mcp 355 with xspc res/top. Thats why Im asking if it will be enough. I understand the d5 would be best, But is the 355 with top enough?
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