Watercooling my Radeon HD 6970

By killerclown96 · 5 replies
May 30, 2011
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  1. Sup guys im thinking of watercooling my HD6950 thats unlocked to a HD6970.
    I want to water cool because of silence and cooling efficiency.This is all going to go in a Coolermaster 690II case. So far here is what i have picked out:

    XSPC RS Series 240mm Dual Radiator:

    XSPC Single 5.25" Drive Bay 200 L/ph 12V Pump with Reservoir:

    EK FC6970 Full Cover Waterblock for ATI /AMD 6970:

    Primochill PURE Performance Coolant 32oz : UV Blue:

    Masterkleer Hi-Flex 7/16" ID - 5/8" OD :

    K PSC 1/4" Thread Compression Fitting for 7/16" ID - 5/8" OD Tubing:

    So those are the parts that i have picked. Can you tell me if they are compatible.
    My max is 175 pounds no more. I hope you can help me.
  2. dividebyzero

    dividebyzero trainee n00b Posts: 4,891   +1,264

    That looks fine. I presume this a loop for just the graphics card ?
    You'll need four of the compression fittings as well as two barbs (for the reservoir). For a plexiglass reservoir I would normally recommend plastic barbs. The outlet you are getting your loop from doesn't have that option so I would suggest a couple of these Bitspower brass barbs and a couple of hose clamps .
    I would also suggest an antibacterial/antifungal coil .
    You should still make your £175 budget (depending upon shipping charge if any)
  3. killerclown96

    killerclown96 TS Rookie Topic Starter Posts: 17

    Hey, thanks for the advice :) , but i was also thinking of mabey buying a kit that had a CPU loop in it and then just add the GPU in it. Is that possible. For example:





    + a HD6970 waterblock

    Or would it be better to just go with the GPU loop and leave out the CPU(i dont mind if the CPU is not cooled??
  4. dividebyzero

    dividebyzero trainee n00b Posts: 4,891   +1,264

    If you are limited to a 240 (or 280) mm radiator then I would suggest GPU only- depending upon whether you plan on overclocking, and what CPU you have.
    A 360 (or 420)mm rad is going to be a better bet for a loop including GPU and CPU. The 6970 is not a cool running card- as you've probably already worked out, and dumping the combined heat of CPU and card into a smaller radiator (even with 4 push-pull fans) is not going to lower tour temps appreciably. Unfortunately your chassis is going to be the limiting factor for an internal setup, so I would suggest either an externally mounted radiator or a seperate CPU cooler (either air or possibly self-contained -i.e. Corsair H60 ).
  5. killerclown96

    killerclown96 TS Rookie Topic Starter Posts: 17

    Thanks i have decided to go an only GPU loop. Also what would be the best way to make the water flow? Eg: From reservoir/pump to rad to Gpu and back to pump?

    Sorry that im asking lots of stupid question, I just want to get this right and not mess up my rig... :p
  6. dividebyzero

    dividebyzero trainee n00b Posts: 4,891   +1,264

    Pump/res to GPU block to radiator then back to the reservoir, otherwise the warm coolant sits in the reservoir. Ideally you want to expel the heat as quickly as possible after the block heats it up.

    Good luck.

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