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Loop Questions

post #1 of 2
Thread Starter 
I just purchased myself a Lian Li A05 to house a new project build. I love this case for its price, size, and potential for modifications. I'd like to watercool both the CPU and GPU and keep everything internal as well. So far I've worked out that I can fit 2x240 rads at both the top and bottom panels which should be adequate cooling for my i5 and 5870.

The only problem I'm running into is deciding how I should set up my loop. I'd like to avoid as much tube-routing as possible. It seems I have three options, either: A serial loop with a lot of tube-crossing, a serial loop book-ended by rads, or splitting my single loop into parallels.

I feel like book-ending my loop wouldnt be as efficient as the warmer water from the CPU would be moving directly over the GPU before going through a rad. I'm not sure how much of an impact in performance this would have though, which is where I need some opinions.

Otherwise, it's a toss up between these 2 setups:



I know that generally people recommend serial loops as you don't have to deal with differing flow rates across the loop; however, how much of an impact is this really in real-world performance? Since the case is so small I really want to avoid as much tubing as possible.

My setup so far includes:
EK 5870 Full-cover block
Apogee GTZ block (covers i5 760)
XSPC Dual Bay reservoir /w Swiftech MCP-655b

Have yet to purchase rads but I'm leaning towards just grabbing 2x XSPC RS 240

TL;DR:

Is there any reason I shouldn't split a single loop into parallel? Are the disadvantages noticeable in real-world performance?
My System
(15 items)
 
  
CPUMotherboardGraphicsRAM
i5-760 eVGA P55 SLI Radeon 5870 4GB Corsair Dominator 
Hard DriveCoolingOSMonitor
Seagate Barracuda 500gb / 60GB Corsair Force 2 Water cooled Windows 7 27" ASUS LED / 19" DELL IPS 
KeyboardPowerCaseMouse
KBC Poker Cherry MX Red Corsair HX650 Lian-Li A05N Microsoft Intellimouse Optical 1.1 
Mouse PadAudio
Steelseries Modded Sennheiser HD555 
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My System
(15 items)
 
  
CPUMotherboardGraphicsRAM
i5-760 eVGA P55 SLI Radeon 5870 4GB Corsair Dominator 
Hard DriveCoolingOSMonitor
Seagate Barracuda 500gb / 60GB Corsair Force 2 Water cooled Windows 7 27" ASUS LED / 19" DELL IPS 
KeyboardPowerCaseMouse
KBC Poker Cherry MX Red Corsair HX650 Lian-Li A05N Microsoft Intellimouse Optical 1.1 
Mouse PadAudio
Steelseries Modded Sennheiser HD555 
  hide details  
Reply
post #2 of 2
Book ending your loop would mean the least amount of tubing. Don't worry about the loop order of rads and blocks as the loop will reach equilibrium. The difference in water temps from one loop order to another would be about 1~2 C.
Lil Burninator
(14 items)
 
  
CPUMotherboardGraphicsRAM
i7 4770K ASUS Gryphon CF R9 290Xs Samsung 4x4GB 
Hard DriveCoolingOSMonitor
Samsung EVO 1TB 2x 240s | 360 | MPC35X | Mostly BP W7 Pre x64 XL2720T 
KeyboardPowerCaseMouse
K70 AX1200 CaseLabs S5 + Ped G700/Mamba 
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Vespula WA7 + KRK RP6s + HD650s 
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Lil Burninator
(14 items)
 
  
CPUMotherboardGraphicsRAM
i7 4770K ASUS Gryphon CF R9 290Xs Samsung 4x4GB 
Hard DriveCoolingOSMonitor
Samsung EVO 1TB 2x 240s | 360 | MPC35X | Mostly BP W7 Pre x64 XL2720T 
KeyboardPowerCaseMouse
K70 AX1200 CaseLabs S5 + Ped G700/Mamba 
Mouse PadAudio
Vespula WA7 + KRK RP6s + HD650s 
  hide details  
Reply
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