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MCP35X vs MCP655, help me decide please - Page 2

post #11 of 18
Quote:
Originally Posted by windfire;15625866 
The first link is cheaper by $25 because it is actually one without speed control. The title is a little misleading with its 'With Speed Control' although the description below states that there are 2 versions: with speed control (MCP655-B) and without (MCP655). Note the model number under the price $76.95 is MCP-655 (without the B suffix).

The B is the one without the speed controller according to the PPCs site.
"
The MCP655 is available in two versions:

With a speed controller (part # MCP655)
Without speed controller (part # MCP655-B)
"
It is a bit confusing:confused:

Sorry for double post, I didn't realize. My Bad, not sure yet how to delete a post
Edited by gelatin_factory - 11/8/11 at 6:14pm
post #12 of 18
Quote:
Originally Posted by gelatin_factory;15625962 
The B is the one without the speed controller according to the PPCs site.
"
The MCP655 is available in two versions:

With a speed controller (part # MCP655)
Without speed controller (part # MCP655-B)
"
It is a bit confusing:confused:

Sorry for double post, I didn't realize. My Bad, not sure yet how to delete a post

Yes, I was confused too.

I check Swiftech website. It says MCP655 is with speed controller ($104.95) and MCP655-B is without (US$89.20).
http://www.swiftech.com/pumps.aspx

At Sidewinder, the 655 sells at US$77 while 655-B sells at US$67.
http://www.sidewindercomputers.com/pumps.html
Edited by windfire - 11/8/11 at 6:25pm
post #13 of 18
I'd get the koolance D5 so you can change it up w/o voiding your warranty.
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post #14 of 18
The Koolance D5 version comes with a tach sensor, I think Aqua Computer's version comes with a tach sensor also.. These are the only ones I know of..

D5 comes with 2 flavors, one with the speed control build into the motor, the other known as the (b) version does not.. I prefer the speed control version as it's only a few dollars more..

The D5 has better flow, the 35x has better head pressure, both will work and serve you well in my opinion..

I prefer the D5 as I can just fit it into the my top and forget..

Many has have issues with 35x over heating and some even have had issues with it actually burning out and rare few has even seen it caught on fire, it gets that hot..

the 35x requires a heat sink on the bottom and preferably if you ask me.. all in all with the 35x + attached heat sink + bottom fan, the bulk is equal to that of a D5, if you add a top with a bong (swiftech actually voids your warranty if you use a different after market top), it's just too massive for me and granted, I use a double wide CL m10 case.... both has its quirks depending on which case you use.. but the bottom line is, both will serve you well and you can't go wrong with either..
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post #15 of 18
^^ Actually, the 35x does not lose out to anything 12v, flow or head pressure wise.
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post #16 of 18
I chose the MCP655 mainly because of the pump top options. The only thing I like about the 35x is the PWM control.
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post #17 of 18
Quote:
Originally Posted by frank anderson;15627510 
Many has have issues with 35x over heating and some even have had issues with it actually burning out and rare few has even seen it caught on fire, it gets that hot..

The heat issue only comes up at very high flow rates.
Mine don't run very hot, but I have 2 of them in series running at 40%.

I have them set up in series like that mainly for redundancy since this rig runs 24/7 CPU+2xGPU folding.
If one fails, and the CPU or GPU temperatures rise above a certain level, Speedfan will kick the remaining one up to a higher speed.

I like the MCP35x pumps for the PWM speed control.
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post #18 of 18
Quote:
Originally Posted by frank anderson;15627510 
Many has have issues with 35x over heating and some even have had issues with it actually burning out and rare few has even seen it caught on fire, it gets that hot..[/B]

I've had countless 355's and a couple of 35x's and I've never seen extreme heat enough for them to burn out, maybe those people had a clog or air in their loop for extended periods of time.

According to Martinsliuquidlab...
Quote:
With that said, you should know that the Swiftech MCP-35X pump is very efficient electrically compared to the D5 series pumps. I like both pumps very much, but it should be noted that you’ll have a little less heat dumped into the loop using a pump like the MCP-35X.

http://martinsliquidlab.org/2011/02/25/swiftech-mcp-35x-reservoir/

The link also has a video with noise at different PWM percentages and flow rates. It should give you an idea of what to expect.
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