Water Cooling CPU

[BuzzCut_]

I'm new to the computer building world, and I was thinking of doing a custom water loop, but it got to 200+ dollars so I just decided to start on square one with that idea. I was thinking whether or not I should just buy this http://www.newegg.com/Product/Product.aspx?Item=N82E16835181032

My question is does this already come with a water pump to keep water flowing? Or does it not need one. Help.

 

[synphul]

The h100i you linked to is what's called an aio. Most aio's like that one can't be modified, they come with everything already put together. Hoses already connected, radiator already full of their coolant and the pump is mounted into the water block that fits on the cpu. It's cheaper than building a custom loop out of components. Generally performance is somewhere between that of a high end air cooler and custom cooling loop. You can't service it for cleaning or replace individual parts. If for instance the pump goes out, you'll need a new cooler.

The convenience of it is you mount the radiator in the case, mount the block to the cpu, plug it in and it works. Still a good idea to check for leaks but it's not supposed to leak. You don't have to measure cooling hoses or rigid tubing, don't have to clamp down all the fittings. Water cooling without the hassle for the most part.

 

[Rhinofart]

That's an All in One solution. It has the Pump, Waterblock, Radiator, and liquid already enclosed. Just make sure to mount the Radiator in your case with cool air coming in through the RAD, and into the case. It will likely perform OK, but don't expect anything spectacular out of it. I've been watercooling computers since 2001, and have seen / made a lot of mistakes in my time. These AIO units cut down on the amount of "oops" moments at the sacrifice of good performance.
If you do decide WC is the thing for you, do your research, find good singular components, and piece a new loop together that way. The performance gain you get will be well worth the investment.
For instance my loop running in my main gaming rig:
Intel i7 980x Extreme Edition Stock 3.33Ghz running stable 24/7 @ 4.25 Ghz, and an AMD R9 290x
Lian Li PC 60 Case (I've modded it a lot over the years)
Top Rad Aquacomputer Airplex Modularity 140 with Built In D5 pump flowing to R9 290x Input (Watercool Heatkiller 3 GPU GPU Full Cover Block)
R9 290x Output to Bottom Rad Airplex Modularity 360 Copper Input
Modularity 360 Output to CPU Input (Swiftech Apogee XT)
CPU Output to Top Rad Input
If and when you do decide to go with a dedicated loop, make sure you select components that are all the same material. (Nickle, Copper, etc) for the cooling channels. Otherwise, you will start to see Galvanic Corrosion form inside the loop on the blocks.

 

[Ecky]

3 decibels is a doubling in sound volume. RelaxedTech did a review of several high-end AiO (all-in-one) watercoolers, and found that Noctua's D15 performed the same as Corsair's H100i with 1/8 the noise, and 4° C behind NZXT's Kraken X61 with 1/40 the total noise produced. For reference, Noctua's D15 is a $90 cooler, the H100i is $160, and the Kraken X61 is $115.

I don't generally recommend AiO watercoolers, because they usually offer a poor value when compared with a high-end air cooler - they cost more, and at the same noise level, they perform worse. If you were to replace the fans on the D15 with higher speed fans, you would see it perform better than any of those watercoolers.

Custom-loop watercoolers can perform better, potentially with less noise too, but the cost and complexity are far higher. You have more risk of leaks, which can destroy hundreds or even thousands of dollars of equipment. The gains of a few degrees C are not going to net you a higher overclock, or in any measurable way increase the life of your components. I ran custom loops (plural) for over a decade before I sold all of my watercooling equipment after taking a long and hard look at the numbers.