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Mounting The Radiator And Fan

Corsair H70: Next-Gen Self-Contained Liquid Cooling
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Compact Radiator With Lots of Fine Fins

At a height of about 15 cm and a width of about 12 cm, you can easily install the radiator inside large-enough cases by attaching it to a 120 mm fan ventilation hole. The depth of the radiator is 5 cm--twice as thick as on the Corsair H50 model. If you use both of the included fans by sandwiching the radiator in a push/pull configuration, you get a total thickness of 10 cm, which could become a problem in more compact cases.

The radiator's fins are quite dense, spaced just 1 mm apart. On the one hand, this provides for a high number of fins, creating a large surface area for heat transfer. On the other hand, this also restricts air flow, so you should definitely use both fans in order for the radiator to work at maximum effectiveness.

As mentioned before, these fans rotate at 2000 RPM, but can be slowed down to 1600 RPM with the included resistor cables. This is necessary if you are aiming for a relatively low-noise kind of setup. The fans have rather short cables, at just 21 cm each. Depending on where in your computer case you install the radiator and where on your motherboard the fan connectors are placed, this might pose a problem.

Installation

Installing this liquid cooling system is fairly easy, although you might need to think things through when fastening the water block to the motherboard. You need to use the appropriate mounting hardware that fits your motherboard. Installation instructions are included to help you choose the right one. For our LGA 775 system, we first had to attach four risers on the water block back plate that goes on the rear side of the motherboard, which the screws are fit into later.

You also need to fasten a plastic mounting bracket on the front of the motherboard, and you should take a close look at the instructions so you do not choose the wrong one, as the included mounting bracket fastening parts are confusingly similar.

When the preparations are complete, everything goes quickly. Attach the back plate to the motherboard, then the mounting bracket, and finally put the water block on top of the CPU. With a twist to the right, the water block is securely fastened to the mounting bracket. The final step is to tighten the screws, preferably in a diagonal order so that you do not put too much stress on just one side of the CPU and socket.

Fan Configuration

The radiator can be installed pretty much wherever you want it--within the boundaries set by the length of the tubes, of course. A good choice seems to be in the back of the computer case.

The two fans included provide for a couple of different configuration options. Corsair recommends attaching them both to the radiator in order to achieve maximum cooling performance, but you also have to decide whether you want to have them suck in cool air from outside the case through the radiator, or blow out hot air from inside the case through the radiator. Here you have to take into account maximum CPU cooling versus the risk of heat accumulating inside the case and making the rest of your components warmer. You probably need to play around a bit with this to see what fits your case and fan setup the best.

Also, remember to balance the number of fans sucking air in and fans blowing air out, as axial fans of the kind used in computer cases are less effective when working against large differences in air pressure.

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Top Comments
  • 26 Hide
    chovav , October 29, 2010 8:47 AM
    where's the H50 in the charts?
  • 20 Hide
    Scanlia , October 29, 2010 9:34 AM
    I think its stupid, just look @ the Prolimatech's...
  • 14 Hide
    karma831 , October 29, 2010 9:40 AM
    Overpriced, equal to or gets beat by air cooling in temps, and is pretty loud...Doesn't sound like a very good product ?__?

    The prolimatech and noctua offerings are much better.
Other Comments
  • 10 Hide
    wribbs , October 29, 2010 8:30 AM
    "street price of around $110, it is reasonably priced" -too high.
    "slightly elevated background noise" -understatement

    You will be better served by the h50, yes its weaker but its cheaper and quieter and performs close to the same. Do yourself a favor and avoid this product although it is quite good.
  • 26 Hide
    chovav , October 29, 2010 8:47 AM
    where's the H50 in the charts?
  • 20 Hide
    Scanlia , October 29, 2010 9:34 AM
    I think its stupid, just look @ the Prolimatech's...
  • 14 Hide
    karma831 , October 29, 2010 9:40 AM
    Overpriced, equal to or gets beat by air cooling in temps, and is pretty loud...Doesn't sound like a very good product ?__?

    The prolimatech and noctua offerings are much better.
  • 4 Hide
    maxal , October 29, 2010 10:19 AM
    Would it be possible to post combined charts of idle temp/noise and full load temp/noise ? IMHO that would be more informative than plain bars, as many are interested in balance of those characteristics.
  • 5 Hide
    gkay09 , October 29, 2010 10:25 AM
    I had expected to see even the CM Hyper 212+ results...
    IMO $110 for such a cooler not worth it,...Other good option if going for a closed loop cooler would be the CoolIT SYSTEMS ECO...
  • 13 Hide
    cmcghee358 , October 29, 2010 10:40 AM
    I would have also liked to have seen comparison between a push/pull exhaust, and a push/pull intake.

    For my H50, it is quite explicit that the radiator should be pulling outside air through the fins. And yet, people keep it as an exhaust and then lament of their temps.

    One of the biggest perks of a closed loop water cooling system is you dictate what air is being used. Where-as big air is always restricted to case air(unless a side is removed and a box fan is added)

    I would have also liked to of seen it as a delta above ambient, rather than a flat CPU temperature comparison. I personally process the delta better, and lend more credence to it.
  • 0 Hide
    uruquiora , October 29, 2010 10:46 AM
    would have liked to see the temps in passive mode, with no fans, and on a more recent CPU...
  • 1 Hide
    mjello , October 29, 2010 10:59 AM
    I want one for my gfx card not the cpu. Its my gfx thats noisy. I don't care about cooling temps or overclocking as long as the cooling is adequate. I just want sweet silence :) .
  • 0 Hide
    cmcghee358 , October 29, 2010 11:03 AM
    Quote:
    I want one for my gfx card not the cpu. Its my gfx thats noisy. I don't care about cooling temps or overclocking as long as the cooling is adequate. I just want sweet silence :) .


    I guess you missed the part where it was the noisiest thing on the list with a 57.3 dB at max?

    Also considering the TDP of some of these GPUs are between 190 and 300W, you can expect the H70 to work much harder thant he sample 130W CPU. So it will most likely be loud all the time because of the higher operating temps of the GPU.
  • -4 Hide
    rottingsheep , October 29, 2010 11:48 AM
    pentium d's best performance!
  • 3 Hide
    d1rtyju1c3 , October 29, 2010 12:18 PM
    Someone explain why they are using a pentium D for the test.
    I want to see the results on 1366/1156 CPU not an old pentium d.
  • -7 Hide
    TemjinGold , October 29, 2010 12:32 PM
    Isn't the point of water cooling to not have fans to deal with?
  • 1 Hide
    ohseus , October 29, 2010 12:58 PM
    D1RTYJU1C3Someone explain why they are using a pentium D for the test.I want to see the results on 1366/1156 CPU not an old pentium d.


    The reason is clearly stated in the page about the test configuration. RTFM.
  • -6 Hide
    d1rtyju1c3 , October 29, 2010 1:29 PM
    Quote:
    The reason is clearly stated in the page about the test configuration. RTFM.




    I could care less if the Pentium D is less efficient than a 1366/1156 CPU. People dont really need to know the coolers results on an old Pentium D.
    Yes, I know that more than likely if it performs good on the Pentium D then it will definitely perform good with the i7, Blah Blah Blah, show me, That is what people want to see. For someone who dont know and is looking for a good review on how the H70 performs on the i7/i5 this review is pretty much useless to them.

    It is one thing to test new components on the Core2 CPUs but an old Pentium D come on. Even an old 45nm Core2quad or C2D would be less efficient than an i7/i5, not only that more people own the C2Q/C2D.
  • 1 Hide
    Anonymous , October 29, 2010 1:32 PM
    Perhaps I missed something but:

    - which configuration was used? push/pull
    - air from outside the case or the inside

    The orginal fans included with the H50/70 are crap. The firt thing I did, changed them for 2 Scythe fans. The temperatur is much better, the same thing for noise level.

    Want to see what this cooler is realy capable of:

    http://extreme.pcgameshardware.de/offizielle-pcghx-wasserkuehlungstests/112351-kompaktkuehlung-corsair-h70-im-test.html

    It's german but you don't have to understand the language to interprete the charts, particularly "H70 @ 2 Serienlüfter @ 1.600 1/min
    Spoiler:"
  • -1 Hide
    rubix_1011 , October 29, 2010 1:34 PM
    This isn't real watercooling, and H50/H70's are known to have weaknesses and flaws. H50's were prone to leaking, and on both units, the pump is INCREDIBLY underpowered. You are MUCH better using a high quality air cooler for your CPU.

    Yes, Corsair and a few of these companies making these *cough* CRAP *cough* self contained coolers also make crap GPU coolers for those of you interested.

    I'd suggest you check out the Forums > Overclocking > Coolers and Heatsinks for more discussions on Tom's (I am a regular for watercooling out there) as well as Overclock.net forums...or Xtremesystems forums. Creating an 'idiot proof' watercooling unit like this needs to be a much better performing unit if they are charging this...there are far better alternatives for beginners for watercooling.
  • 0 Hide
    socrates047 , October 29, 2010 1:46 PM
    im sporting a big goofy smile now that i reflect on my decision to go with prolimatech :) 
  • 1 Hide
    kelemvor4 , October 29, 2010 1:51 PM
    Have to agree with other sentiments expressed. If there are air coolers that match the performance of h70, then h70 is a failure at being much more than a gimmick.

    They should offer 240 and 360 models, 120 just doesn't dissipate enough heat.
  • 2 Hide
    rubix_1011 , October 29, 2010 1:55 PM
    @kelemvor4:

    You are quite correct. For the price/performance curve, it fails against other air coolers costing more than 50% less.

    Flat performance vs. even beginner watercooling is dismal...even against the ThermalTake bigwater kits...which we all try to steer others away from.

    The radiator needs to be at least a 220 AND offer better flow rates. Their site doesn't even state what the pump flow is...but a few have done some tests and its very pathetic.

    Gimmick? Yes, very much.
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