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water cooling, single loop, double pump


New Member
Mar 23, 2009
40 (0.01/day)
grand rapids, mi
Basically just that: water cooling, single loop, double pump. it'll work, but will it work right?

(and why I want to do it this way is hard to explain, I'm modding the heck out of an older server case, and basically I have a giant reservoir and no space for a second reservoir in a separate loop, unless I rethink how the entire build will look)

Basically I'm envisioning the flow going one of two ways:

#1) reservoir, pump#1, radiator #1 (3x120mm), CPU block, pump#2, radiator #2 (2x120mm), gpus, reservoir

#2)reservoir, pump#1, radiator #1 (3x120mm), CPU block, radiator, gpus, pump#2 (2x120mm), reservoir

radiator #1 has to be mounted at the top of the case, above the reservoir, I'm planning on putting radiator #2 toward the front of the lower section.

pics may help explain.

the original
circa 2001, 1.3Ghz athlon with early danger den cooling kit.

this should give a rough idea of over all case size

new reservoir

rough fitting (LOTS of work yet to do)

I had intended to stack two but if I do the radiator won't fit.

Thoughts on the cooling loop for best effect without redoing the design to much? for example I don't want the reservoirs or radiators externally mounted. Also has anyone tried cooling coils in water cooling setups yet? and if yes, how'd they work?

input much appreciated.
May 27, 2007
285 (0.07/day)
System Name Dark Aurora
Processor Intel e6600 @ 4.09ghz
Motherboard ASUS Maximus Formula x38
Cooling Custom Water Cooling on Cpu and Gpu
Memory 4gb Corsair DDR-2 800mhz/ 2gb Patriot DDR-2 1066mhz
Video Card(s) XFX 8800gt 512mb
Storage 160gb Maxtor, 250gb Western Digital, 320gb Maxtor
Display(s) Dell 22" LCD
Case Gigabyte Aurora 570 (Black)
Audio Device(s) Audigy SE
Power Supply PC Power and Cooling 750W
Software Dual boot Windows XP/Fedora 8
Benchmark Scores AM3 201,045 Super Pi 12.453s @ 4.09ghz
As long as both pumps are identical your fine.

If they are different, don't use both in a single loop.

You could always go the route of a t-line with a dual loop setup if you don't have room for a second reservoir.
Jan 7, 2008
3,923 (1.08/day)
System Name Main / Home Media Serever
Processor Intel i5 2500k @ 4.75ghz / AMD AM3 5200+ x2
Motherboard ASRock Fatal1ty P67 Performance / Biostar 790GX
Cooling Xigmatek Dark Knight / XIGMATEK Apache
Memory 12gb of G.Skill Value Series DDR3 / 4x 1gb DDR2
Video Card(s) XFX Radeon 6870 1gb / Asus Radeon 5450 512mb
Storage 2x Samsung 830 64gb SSD Raid 0 & 750gb WD Blue HDD / OCZ Vertex II 80GB & 10TB of HDD Space
Display(s) 2x Acer 24" LED / Samsung 50" LED
Case Xigmatek Asgard II / APEX PC-389-C
Power Supply Rosewill 750w / Antec EArthwatts 380w
Software Windows 7 Professional x64 SP1 / Ubuntu 14.04
Whats the point of doing a single loop. Why not just do two loops, one for the cpu and one for the gpus. Seems like it would be less of a hassle.


New Member
Mar 23, 2009
40 (0.01/day)
grand rapids, mi
sweet aspire, looks like you're using the swifttech pumps i've had my eye on too. I've also been looking at the aquastream pumps as well, I thought the USB interface would be sweet. also, thanks for the advice on the T loop, I had that thought, but wasn't sure the reservoir could feed both through a single line.