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Question about fittings / tubing sizes & loop config for GPU

post #1 of 2
Thread Starter 
Hi all

I'm currently rocking this on my CPU

Now the time has come for me to begin planning to include my GPU into the loop (or potentially a seperate loop)

See my sig for the rig, its a little outdated but the specs are still the same, my GPU is a 780TI - I plan in the future to throw a 2nd one in so i'm considering that when building it into the loop.


Firstly:
a question on fitting sizes. I'm a little confused as i'm fairly new to this and i have no background in anything to do with it. Basically if you check the link above you can see the XSPC kit i purchased came with G1/4″ to 1/2" Barb. These are the fittings right? they screw into the block for example and i connect the hose to them. As for putting my GPU under water i hoped to purchase the parts myself, rather than going for a kit - but i'm a little confused as to what fitting size i need?

I'm looking on, for example here to replace my existing fittings and extras for the GPU (so everything matches ofc) but i can't work out which size i require.

Would these be suitable for example?


Secondly:
The way i see it there are 2 feasable options:


1. Res --> rad --> cpu --> gpu --> res

2. Res --> rad --> cpu --> 2nd rad --> gpu --> res


I'd like to include a photon res into my system and a more powerful pump, i've also cleared some space for a (possible) 2nd radiator in my case

so i'd like to hear opinions / suggestions on this as i can't make my mind up what the best course of action is.

Obviously i'm going for lower temps as possible working with what i have, i'd rather not replace my case at the moment so given the space i have i dont think i could fit a rad bigger than a duel.

Thirdly

Bigger res vs more powerful pump ? I figure if the water is moving faster it will be more effective at removing the heat from the block. but if the rad is larger, the water will be cooler? does anyone have any experience with the differences here? I'd like to hear some opinions.

I don't have a problem with my temps, i think they're fine - i'm just curious

For those interested my idle temp is ~20c and under load (taken after 2 hours of ITU Stress) i'm ~75c <-- but i think this could improve with a more powerful pump no?


Also, how about Rad into Rad? as i'm restricted with the size of the rad i could use, i do have space for 3 duals in my case, two of which i could mount very close together - would this make much of a difference with temps?


Thanks ahead for any input, greatly appreciated as i'm enjoying my ass off learning about all this - although my bank balance isn't so happy, its only money right? what other use does it have if you don't spend it on the things you enjoy ? biggrin.gif


-Pendaz
post #2 of 2
  1. Fittings
    You have different choices for fittings. Either barb fittings (the ones you have now) or compression fittings.
    When you choose your fittings it is important to make sure that:
    - The thread will work with the block (mostly G1/4")
    - The fitting will fit the tubing you want to use. To have a unified look I'd suggest using 7/16 tubing and getting the same fittings as in your kit.

    I suggest you have a read in this OCN thread (and the linked threads within), they will answer all of your questions.

  2. Loop order
    It does not matter what loop order you have, the only thing you need to look out for is that the pump comes after the reservoir and is located lower than the res itself.

  3. Pump//Rad
    My experience is that flow itself does not make a huge difference. Faster flow =/= better temps, however there is a certain min. flow that you should have.
    If you are cooling a 780TI (or even two) together with your CPU you will need that extra radiator, the one you have now will not suffice.

    You will find great reveiws on this site: martinsliquidlab.org
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Artifactor
(20 items)
 
Phantom 410
(16 items)
 
 
CPUMotherboardGraphicsRAM
Intel Core i7-3960X Asus Rampage IV Black Edition EVGA GTX 980TI Corsair Platinum, 4x 8GB 2133 mhz 
Hard DriveHard DriveHard DriveHard Drive
Seagate Barracuda Intel 520  WD Caviar Green Samsung 840 
Hard DriveOptical DriveCoolingOS
WD Caviar Black LG BH10LS Custom Waterloop Windows 7 Professional 64bit 
MonitorKeyboardPowerCase
BneQ XL2410T Zowie Celeritas be quiet! DARK POWER PRO P10 CaseLabs SMA8 
MouseMouse PadAudioAudio
Logitech G502 Zowie G-SR AKG Q701 Asus Xonar STX 
CPUMotherboardGraphicsRAM
AMD FX-8350 Gigabyte GA-990FXA-UD5 Asus GTX-770 DirectCU II 2GB GDDR5 Corsair Vengeance 2x4GB Low Profile 
Hard DriveHard DriveOptical DriveCooling
WD Caviar Black 4TB Samsung SSD 840 Asus DRW-24B5ST Alpenföhn Matterhorn 
OSMonitorKeyboardPower
Windows 7 Home Premium 64bit BenQ XL2411T Corsair K90 Corsair AX850 
CaseMouseMouse PadAudio
NZXT Phantom 410 White Zowie EC2 Razer Manticor SteelSeries Siberia V2 Frost Blue  
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