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Questions about Water Cooling

post #1 of 5
Thread Starter 
Hi

I am new to watercooling, neither have i owned a good air cooler as yet. But i want to go straight to watercooling, because of the numerous advantages it has. I read quite a bit of information about watercooling and i know how it works and what parts it should include, though i have never touched or worked with a watercooling part as of yet. I belive it's pretty different going from pictures and info to reality.

I have a couple of questions but i won't post them all now, i will only start with a few.

First one: PUMPS. I am planning to get a 480mm radiator that will be on top of the case i want to buy, and build a cpu only loop that has one 480mm radiator. I first thought to start with a EK DCP 4.0 (i think it's called) pump and then upgrade it later with a bigger one. But now i think about buying a better one from the start. How do you think is better ? And what are a few good pumps, give me some examples (please give a link if you can) ?

What i know are the ones i think they are called D5 or Laing D5, is that one pump model, or is it a type of pump and there are many variations ? Also should i look for a PWM pump that varies it's rotation speed, are they better or worse ? I also heard that MCP655 is good, is that among the best ones ?

I've seen many people using this kind of pump (in the picture below), what kind of pump is that ? (I can't remember what that metalic thing that covers the pump is called, something with "mod" i think)
CREATOR: gd-jpeg v1.0 (using IJG JPEG v62), default quality

Also, what is the purpose of the reservoir in a loop, why doesn't the water go like in the closed loop coolers, without using a reservoir ?

smile.gif
post #2 of 5
I'm not a real expert on pumps but I'll try to answer what I can.

The D5 is a pump model. Several companies make them and offer different "tops" (the part that your reservoir and tubing connect to).

Regarding the PWM model... It's not really necessary. With my Swiftech MCP-35X I only have a difference of 2C from minimum flow rate and maximum flow rate. I'd suggest getting one with a manual speed adjustment and finding the highest speed that doesn't put off too much noise. FWIW my pump is inaudible until it's at about 60% speed.

That pump you have pictures appears to be a D5 with a Bitspower pump top:
Edit: Actually that Bitspower piece isn't a top. It's just a good looking cover for the pump unit.
http://www.frozencpu.com/products/8803/ex-pmp-80/Bitspower_D5_MCP655_Pump_Mod_Kit_-_Chrome_BP-D5MA-SL2.html?tl=g30c107s1805#blank
The silver part is what's called the top.
A top is something like this:
http://www.frozencpu.com/products/17626/ex-pmp-217/Alphacool_HF_D5_Top_-_Laing_D5_MCP655_-_Black_Acetal.html?tl=g30c107s1805
Aftermarket tops generally offer improved flow rates over the stock tops.

The reservoir is primarily there as an easy way to fill the loop and to "bleed" the bubbles out of the loop. It has some secondary benefits, such as an easy water level indicator and it allows the water a few minutes to reach equilibrium.
Edited by Shpongle - 7/18/13 at 3:25pm
   
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Hard DriveHard DriveCoolingCooling
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Crosair K70 Silverstone ST75F-P 750W Mountain Mods U2-UFO Logitech G700s 
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beyerdynamic DT 880 (250 ohm) Schiit Magni 2 Schiit Modi 2 Zalman MFC1+B 
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MDPC Sleeving 
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post #3 of 5
Thread Starter 
Ok, and what are a few examples of good D5 pumps ? What does Laing D5 mean ? Is MCP655 a D5 pump ?
post #4 of 5
A mcp655 is a d5 pump and the swiftech version is very good, just make sure you get the vario editn which allows you to vary the speed of the pump. The silver bit on the pump is called a bitspower mod kit. It does not serve any purpose other than to make it look good. Then the acrylic part in thetop of the pump will be a bitspower pump top which offers more options for the inlets and outlets of the pump and allows better flow.
Reservoir is there because of the reasons said above.
 
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Samsung 840 EVO 120GB 2.5 inch Basic SATA Solid... What I am currently using EK-FC R9-290X - Nickel (original CSQ) EK-FC R9-290X Backplate - Black 
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post #5 of 5
Thread Starter 
Hmm, it think it would be a pretty big difference in price to get an MCP655 + mod kit + pump top as opposed to get just a EK 4.0 pump to start with like i said in the first post. Not sure how to go about it. The mod kit also helps reduce the noise of the pump ?
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