Help with Watercooling a 6970 in a GPU only loop

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ImHighAs

50 posts

Geek

#89850 9-Sep-2011 10:29

Hey GZ,

Been a long time since ive been on here. Have currently set up my new rig in my Fractal XL.
Am looking into WCing my 6970 as i run my H70 as an intake at the back and find the exhaust from the 6970

EK FC6970 Acetal + Nickel - HD6970 Reference Fullcover Waterblock

EK FC6970 Black Backplate - HD6970 Reference Design Backplate

EK Multioption RES X2 - 250 Advanced

EK CoolStream RAD XT 240

Tygon R-3603 Clear 3/8" ID 5/8" OD Tubing

No im not too sure about the fittings and what pump i would need was wondering if anyone has any input for me.

Gettin REAL excited about WCing the build

Am wanting to run the 240 rad preferrably at the bottom of the case along with the pump.

RealityClash

192 posts

Master Geek

#519035 9-Sep-2011 15:03

Several weeks ago I set up a WC loop on my 2500K using the similar parts. Here's the pump and top I used:

http://www.computerlounge.co.nz/components/componentview.asp?partid=12783
http://www.computerlounge.co.nz/components/componentview.asp?partid=12883

I love how small the pump is and its pretty quiet depending on how you have it mounted. As for fittings I went with 8 of these seeing as they come in pairs

http://www.playtech.co.nz/afawcs0139235/CATID=226/ID=9831/SID=1059132209/productdetails.html

Otherwise Computer Lounge have matt black versions but they're a fair bit more expensive as they are priced per fitting

http://www.computerlounge.co.nz/components/componentview.asp?partid=13950

ImHighAs

50 posts

Geek

#519094 9-Sep-2011 18:07

You reckon these are all the parts ill need for it?

Pump: Koolance PMP-400 Watercooling Pump 3/8" Fittings
Res: EK Multioption RES X2 - 250 Advanced
Radiator(for now) : EK CoolStream RAD XT 240
Waterblock: EK FC6970 Acetal + Nickel - HD6970 Reference Fullcover Waterblock
Backplate: EK FC6970 Black Backplate - HD6970 Reference Design Backplate
Tubing: Tygon R-3603 Clear 3/8" ID 5/8" OD Tubing
Fittings: BITSPOWER MATT BLACK COMPRESSION FITTING x 6??

RealityClash

192 posts

Master Geek

#519114 9-Sep-2011 19:21

Yeap I think that's everything, although you might want to consider getting a pump top and two more compression fittings for the pump.
Im not sure how much of a performance difference it would make but it would certainly look nicer with something such as the EK top aswell as the fact that you'd be using the same type of fitting for all connections.

Also you'd probably be best off just checking with someone else who's water cooled a GPU first as I've never WCed a GPU :)

ImHighAs

50 posts

Geek

#519248 10-Sep-2011 12:32

Sweet az bro thanks for the help so far.

Could i just ask what does the pump top actually do? have tried googling but all i get are P**** pump tops and stuff like that lol.

RealityClash

192 posts

Master Geek

#519263 10-Sep-2011 13:27

No problem man.

I believe they are designed to increase flow rate and also enable you to use other fittings such as metal barbs or compression fittings instead of the plastic barbs you get with the stock top.

Here's a page I found of someone's performance testing from a bunch of different tops. martinsliquidlab.i4memory.com/DDC31PumpTopTesting.html