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First time water cooling, (3)gtx780 ti, component check, suggestions

post #1 of 62
Thread Starter 
Just want to get some opinions on this water cooling set up before I buy. Since this will be my first attempt, want to make sure I have what's needed, and that it'll work well.


This is my current set up:

Processor: Intel 3930k @ 4.5
Cooler: Corsair H110
Motherboard: Asus P9X79 Pro
Memory: Samsung Green 16gb @ 2100
Video Card: (3x)EVGA GTX780 Ti Superclocked
Power Supply: Seasonic X-1250
Sound Card: SB Titanium X-Fi HD
Case: Corsair 540 Carbide
Monitor: Asus (3x)VG248QE 144hz
Keyboard: CM Storm Quickfire Reds, PBG Keys
Mouse: Razer Death Adder 2013
Surface: Artisan Hien Soft
Headset: Seinnheiser PC360
Note: only running two 780's now as I am afraid I'll cook them without water cooling.



Proposed water cooling loop, built cart on aquatuning website:


(1) Alphacool NexXxoS XT45 Full Copper 240mm (Art.Nr.: 35272)
(1) Alphacool NexXxoS XT45 Full Copper 360mm (Art.Nr.: 35273)
(3)Aquacomputer kryographics for GTX 780 Ti (Art.Nr.: 12740)
(1) Aquacomputer cuplex kryos Delrin für Sockel 2011, G1/4 (Art.Nr.: 10407)
(1) Alphacool VPP655 - OT12 & Alphacool Lighttower All-in-One Reservoir Combo (Art.Nr.: 49128)
(20) Compression fittings 13/10mm G1/4" gerade black nickel (Art.Nr.: 62192)
(6) Elbow compression fittings Anschlusskit Verschraubung 13/10mm 6x Winkelverbinder kompakt black nickel (Art.Nr.: 62236)
(4) Variable SLI/Crossfire VID connection nipple G1/4' - 1 Slot - black nickel (Art.Nr.: 64095)
(5)Meters Alphacool tubing AlphaTube HF 13/10 (3/8"ID) - blue (Semi-Transparent) (Art.Nr.: 59211)
(1) Filling bottle 500 ml PE-LD (Art.Nr.: 32060)
(1) Hose cutter (Art.Nr.: 60000)
(1) Swiftech 8 Way PWM Splitter(out of stock) (Art.Nr.: 81135)
(1) FlexLight Dip LEDs - 24x 4mm LEDs white - 25cm long - with connection cable (Art.Nr.: 83033)
Notes:
- Still need to decide on fans and what RPM
- Went with 45mm radiators as I will have 4 blocks, but 5x 120mm fan/rad slots



Please let me know if this looks good and if I should consider any changes. I'm thinking the only other things I'll need are distilled water and a silver coil.


Thanks!
frunction
Edited by frunction - 3/2/14 at 10:38pm
post #2 of 62
Personally, I would be running a minimum of (2) 480 rads. I prefer having a quiet rig and lots of headroom for good delta.

However, a 360 + 240 will suffice with P/P on all rads.

I prefer GT15's, however someone will chime in with a different fan.

And I would change the D5 with a MCP35x.
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post #3 of 62
Thread Starter 
Quote:
Originally Posted by Ironsmack View Post

Personally, I would be running a minimum of (2) 480 rads. I prefer having a quiet rig and lots of headroom for good delta.

However, a 360 + 240 will suffice with P/P on all rads.

I prefer GT15's, however someone will chime in with a different fan.

And I would change the D5 with a MCP35x.


Doing further reading, it seems like the rads are where I should put in money, so I'll at least up these to 60mm.

Will the DDC give enough flow for 2 rads and 4 blocks? I did see that many think people overkill with flow rate on the pump.

So something like this PWM one would be better than D5 vario:
http://www.sidewindercomputers.com/swmc12vdcpu1.html
Edited by frunction - 3/3/14 at 8:03am
post #4 of 62
Quote:
Originally Posted by frunction View Post

Doing further reading, it seems like the rads are where I should put in money, so I'll at least up these to 60mm.

Will the DDC give enough flow for 2 rads and 4 blocks? I did see that many think people overkill with flow rate on the pump.

So something like this PWM one would be better than D5 vario:
http://www.sidewindercomputers.com/swmc12vdcpu1.html


You would be good with a D5 if you had a CPU + (2) GPU. But you have (3) GPU + CPU. Having one D5 pushing through 4 blocks will affect your flow rate.

The MCP35X have enough pressure to go through those blocks with no problems. I'd rather have the power of something and able to turn it down when I don't need it, other than not having enough for the task.
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post #5 of 62
1. I'm w/ Ironguy ... Id try and do more or bigger rads if possible.

2. 230 watts for the OC'd CPU + 3 x 300 watts* for the OC'd 780 Tis gets ya to 1130 watts (60% of that by rads = 678 watts) .... 1130 watts gonna put that PSU thru it's paces smile.gif

* Might be a bit high for the EVGA SC series....reference VRM may limit performance, especially with some blocks.

3. What fan rpm ? In other words, how much noise will you settle for. For me 850 rpm is the max I can live with day to day....1250 rpm I can stand during stress testing.

The 240 + 360 rads will give ya (w/ push / pull)....

-148 watts for the 240 and 222 watts for the 360 at 1250 rpm = 370 watts (18.3C Delta T)
-165 watts for the 240 and 247 watts for the 360 at 1400 rpm = 412 watts (16.5C Delta T)
-207 watts for the 240 and 311 watts for the 360 at 1800 rpm = 518 watts (13.0C Delta T)

And moving to UT60s makes barely a difference....
-gets ya an extra 9 watts at 1250 rpm
-gets ya an extra11 watts at 1400 rpm
-gets ya an extra 24 watts at 1800 rpm

But the UT60s will give ya 542 watts or 48% of ya heat load....shud get ya about a 12.5C Delta T .... wholly acceptable thermally.... but noisy sound wise.

4. I also agree with iron guy that a 35x or 35x2 (w/ heatsink and fan) belongs in the build .... and I would definitely decouple the Res and Pump. A 250 res would add a bit more of a "thermal sink" to even out temp variations. two pups at half speed would be very quiet, low heat output and plenty of oomph..... could even run all 3 cards in parallel.

5. And possibly a bigger case if yours can't mount 140mm rads ... with a a 420 + 280, you have 560 watts of cooling at 1400 rpm (12.1C).....or 508 watts at 1250 rpm w/a XT45-420 and UT60-280 (13.3C)

6. If it's for looks, get what you have chosen, if it's for performance I'd want the EK full cover GPU blocks..... not a large difference on GPU temps but on VRM, the EK wins by as many as 12C (and this will be significant with the SC series cards)....and as much as 6C on the VRAM. As for CPU Block the one you chose is a 2nd place finisher on LGA 2011 but only by 0.13C which is essentially a tie to my mind.
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post #6 of 62
Thread Starter 
Thanks guys, looking into it, the corsair case won't handle 60mm rads, but I really like the case

I'm not terribly concerned with looks (though it is tempting), want to keep the heat down with the cards stacked and stay under $1k. I wasn't sure about extreme overclocking, as these cards are supposedly voltage locked. Just really want to run three high refresh monitors at good FPS.

I'll switch it up to swiftech 35x pump with heatsink, bigger reservoir, and EK blocks.

Where do you find the formulas? And if I am drawing 1300W and dissipating 548W does that mean overheat? Sorry, very much a layman. smile.gif
Edited by frunction - 3/5/14 at 9:17pm
post #7 of 62
Thread Starter 
Update, this is what I ordered, please let me know if any changes are necessary. I'm hoping this covers it and I'll just need the distilled water. wink.gif


EK-Supremacy Clean CSQ Copper CPU Water Block
3 x EK-FC780 GTX Ti - Acetal GPU Water Block
EK-FC SLI Bridge TRIPLE Parallel CSQ - Acetal
EVGA Triple SLI Connector
Alphacool NexXxoS XT45 Full Copper 240mm Radiator
Alphacool NexXxoS XT45 Full Copper 360mm Radiator
Swiftech MCP35X-BK™ 12 VDC Pump
Swiftech MCP35X Series Pump Heat Sink
Alphacool HF 38 Cape Cyclone 250 Reservoir
PrimoFlex Advanced LRT Tubing - 3/8in. ID X 1/2in. OD - Elegant White
10 x Swiftech ⅜” x ½” Lok-Seal™ Compression Fitting - Black
2 x Swiftech 45° Swivel Elbow Lok-Seal™ Adapter - Black
2 x Swiftech 90° Swivel Elbow Lok-Seal™ Adapter - Black
Monsoon Silver Bullet Antimicrobial G1/4 Plug
Swiftech 8-Way PWM Splitter Box - SATA
12 x Corsair SP120 Performance Edition Fans
Frozen CPU Modular Single braided cable set (White)
2 x Monsoon G1/4 Premium Silicone O-Ring 10 Pack - UV White
XSPC Hose Cutter - 0 to 25mm Diameter
2 x Logisys ML12WT Sunlight Stick, White
Prolimatech PK-3 Nano Aluminium Thermal Compound 5g
ArctiClean 60ml Kit (includes 30ml ArctiClean 1 and 30ml ArctiClean 2)
LDPE Low Charging Wash Bottle, 500ML



The only things I couldn't find are EK backplates and I did not put any kind of fill port, just using wash bottle.
Edited by frunction - 3/6/14 at 8:43am
post #8 of 62
You will likely not need the Monsoon O-rings as fittings always come with their own.
And I would advise against silver in your loop. That's just increasing your chances of galvanic corrosion. No need to add more metals to the soup when other biocides are available. PT Nuke, or X1 for example.
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post #9 of 62
Thread Starter 
Quote:
Originally Posted by PepeLapiu View Post

You will likely not need the Monsoon O-rings as fittings always come with their own.
And I would advise against silver in your loop. That's just increasing your chances of galvanic corrosion. No need to add more metals to the soup when other biocides are available. PT Nuke, or X1 for example.

I just got the O'rings cause they're white, not sure if they can be seen though. Will go with biocide.



Now in ordering parts at 1am, I did just realize I made a mistake. The SP-120 fans are not PWM. So if use my PWM splitter and connect up these three pin fans, they will just run max speed all of the time?
post #10 of 62
Quote:
Originally Posted by frunction View Post

Now in ordering parts at 1am, I did just realize I made a mistake. The SP-120 fans are not PWM. So if use my PWM splitter and connect up these three pin fans, they will just run max speed all of the time?
Unfortunately yes. Non pwm fans cant read the electrical signal and adjust the speed.
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