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Adding to my loop

post #1 of 5
Thread Starter 
So my build is only around 2 weeks old and I'm already wanting to change things. My GTX970's are too loud and the top card is getting up to around 80c with both loaded(ACX cooler), so I want to add them into my WC loop. Currently my loop is just DDC 3.2 PWM pump-->360mmx64mm rad-->EK Supremacy block-->Res. I was thinking of just grabbing a second 360mmx64mm rad to put in-between the CPU and GPU's. I had a few questions about all this as I'm still new to watercooling. Will the pump I have be able to maintain adequate flow? Do I want the parallel or serial connection betwen the two GPU blocks? Anyone have any idea of what kind of temps I can expect with that setup?
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Ducky Shine 3 Corsair HX850 Thermaltake Urban T81 O2+ODAC Amp+DAC 
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post #2 of 5
1. That pump will be fine with that loop
2. Serial vs Parallel really doesn't make much of a difference with only two cards. Personally, I run parallel with my two cards because I like it looks a little nicer. But if you use one of the EK SLI Bridges, then it looks the same whether it's serial or parallel.
3. I can't accurately guess your temps since I've never used that series of card, but when I put my cards under water temps dropped to about 60C under full load(and that's with Fermi ovens)
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post #3 of 5
Thread Starter 
Quote:
Originally Posted by morencyam View Post

1. That pump will be fine with that loop
2. Serial vs Parallel really doesn't make much of a difference with only two cards. Personally, I run parallel with my two cards because I like it looks a little nicer. But if you use one of the EK SLI Bridges, then it looks the same whether it's serial or parallel.
3. I can't accurately guess your temps since I've never used that series of card, but when I put my cards under water temps dropped to about 60C under full load(and that's with Fermi ovens)


Thanks. I think I like the idea of parallel better, and yeah I was planning on using an EK SLI bridge. I've been reading the DDC pumps don't like high flowrates anyway so if anything I hope adding more components will help extend the life of it.

Anyone with GTX970's able to ballpark estimate approx load temps of a 4690k and 2 GTX970s in a loop with 2 360x64mm rads? I have NF-F12's w/L.N.A. on the current rad and would do the same on the other.
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Hard DriveHard DriveCoolingCooling
Samsung 850 Pro Western Digital Black EK Supremacy EVO  EK-CoolStream RAD XTX 360 
CoolingCoolingOSMonitor
EK DDC 3.2 PWM pump EK Res3x 150 Resevoir Windows 7 Professional 3x Asus VE248H 24" in Surround 
KeyboardPowerCaseAudio
Ducky Shine 3 Corsair HX850 Thermaltake Urban T81 O2+ODAC Amp+DAC 
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AKG Q-701 Headphones 
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Phenom II X6 1090T Gigabyte 890FXA-UD5 GTX-470 2 WD Caviar Black RAID 0 
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post #4 of 5
I have two DDC's(mcp35x) in my loop and have them running at 25% PWM and they stay nice and cool and quiet. Haven't had a single problem with them. When I was leak testing and they were running full speed they would get pretty warm to the touch. If left running full speed in a lower restriction loop is when they start to burn out. There is also a few different heatsinks available for them which help too. But just running them at lower speeds is sufficient.

That being said, D5's are very reliable popular pump as well. I used to have one in my old loop and liked it. It was quieter than the 35x.
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Samsung 830 256gb Raijintek EreBoss Core Edition  Win7 Ultimate x64 Samsung 2693HM  
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SanDisk SSD Plus 120gb SSD Seagate Barracuda 2TB Arctic Freezer 11 LP Win7 Ultimate x64 
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47" LED TV Corsair CX430 SilverStone Grandia GD05B HTPC  
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post #5 of 5
I run my SLI 580's in parallel, Not much point adding a rad between the CPU and the GPU's. It'll look messy for little or no gain thumb.gif

Pump will be fine and if you can add another rad thumb.gif
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My System
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SuperServer.
(11 items)
 
 
CPUMotherboardGraphicsRAM
I5 2500K ASUS P8Z68-V PRO EVGA GTX 580 x 2 16Gig G.Skill 1600 
Hard DriveOptical DriveOSMonitor
1 x 120G ssd,3 x 2tb WD Green, 1 x 300gb Veloci... External Win 10Pro 64bit Lg 27" 
KeyboardPowerCaseMouse
Logitech G19 TT Q-Power 750w CM 690II Cyber Sniper 
Mouse PadOther
Razer Mantis (control) Custom Water Cooled 
CPUMotherboardGraphicsRAM
Intel 2700k Asrock Z77 Pro4-M GTX260 G.SKILL DDR3 1600 8Gb 
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Kingston SSD Western Digital  External Water Cooling 
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