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[HELP] Two 140x2 SR2 Hardware Labs radiators - Series or Parallel?

post #1 of 4
Thread Starter 
I am building a new Skylake build.

Parts:
  • 6700K w/ Waterblock
  • 1080FE w/ Waterblock
  • RAM - someday waterblock
  • D5 PUMP
  • SR2 280 Hardware Labs Radiators (qty 2)


Question: should I put the 2 140x2 Radiators in Series with each other before dumping into the reservoir or split the flow just prior to entering the radiators and rejoin it in the reservoir? (See 1st grade ASCII art below)


My current thought is to run them in parallel, as I believe the gains from the flow rate will exceed those of running what would essentially be a 4x140 rad for my setup (which is way overkill)


I already own the components, so I'm not planning on buying different rads.

Thanks! thumb.gif

Code:
+---------R----R---------+


        +-----R----+
+-------+          +-----+
        +-----R----+
post #2 of 4
Series,,,,always.

A big part of how effective cooling is is the water flow at the boundary layer right where the water touches the cooling surface in the radiator, or a water block for that matter. The more turbulence there is there the better the heat transfer. Parallel halves the flow rate and greatly reduces turbulence.
My System
(15 items)
 
  
CPUMotherboardGraphicsRAM
FX6300 Black M5A99X EVO R2.0 Nvidia GTS450 Team Vulcan PC3 12800 
Hard DriveOptical DriveCoolingOS
Samsung 840 PRO Asus DRW-1608P (x2) Custom Water Cooling Win7 (Ult), Win 8.1 & Win Server 2012 R2 
MonitorKeyboardPowerCase
2 X Samsung 915N Ducky Shine III, Blue Cherry/Blue LEDs PCP&C 1kw Lian Li PC-71 (W/Window) 
MouseAudio
Logiteck G400s none 
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My System
(15 items)
 
  
CPUMotherboardGraphicsRAM
FX6300 Black M5A99X EVO R2.0 Nvidia GTS450 Team Vulcan PC3 12800 
Hard DriveOptical DriveCoolingOS
Samsung 840 PRO Asus DRW-1608P (x2) Custom Water Cooling Win7 (Ult), Win 8.1 & Win Server 2012 R2 
MonitorKeyboardPowerCase
2 X Samsung 915N Ducky Shine III, Blue Cherry/Blue LEDs PCP&C 1kw Lian Li PC-71 (W/Window) 
MouseAudio
Logiteck G400s none 
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post #3 of 4
Thread Starter 
It halves the flow rate through the radiator, but it would increase it everywhere else, right?

I would think that there's only so much cooling that can been done in a radiator, and so 50 radiators won't be better than 1 or 2.

With that in mind, I'm thinking the question goes to "is the effective cooling of 1 2x140 the same or near the same as 2 2x140 with these components.
post #4 of 4
Quote:
Originally Posted by Groo21 View Post

It halves the flow rate through the radiator, but it would increase it everywhere else, right?

I would think that there's only so much cooling that can been done in a radiator, and so 50 radiators won't be better than 1 or 2.

With that in mind, I'm thinking the question goes to "is the effective cooling of 1 2x140 the same or near the same as 2 2x140 with these components.
The small gain in flow rate would be more than offset by the loss of cooling. Rads, like most WC components work best at 1.5+ GPM.

As for more than 2 rads, it's all about differential temperatures. The bigger the difference -Water to air - the more heat removed.
My System
(15 items)
 
  
CPUMotherboardGraphicsRAM
FX6300 Black M5A99X EVO R2.0 Nvidia GTS450 Team Vulcan PC3 12800 
Hard DriveOptical DriveCoolingOS
Samsung 840 PRO Asus DRW-1608P (x2) Custom Water Cooling Win7 (Ult), Win 8.1 & Win Server 2012 R2 
MonitorKeyboardPowerCase
2 X Samsung 915N Ducky Shine III, Blue Cherry/Blue LEDs PCP&C 1kw Lian Li PC-71 (W/Window) 
MouseAudio
Logiteck G400s none 
  hide details  
Reply
My System
(15 items)
 
  
CPUMotherboardGraphicsRAM
FX6300 Black M5A99X EVO R2.0 Nvidia GTS450 Team Vulcan PC3 12800 
Hard DriveOptical DriveCoolingOS
Samsung 840 PRO Asus DRW-1608P (x2) Custom Water Cooling Win7 (Ult), Win 8.1 & Win Server 2012 R2 
MonitorKeyboardPowerCase
2 X Samsung 915N Ducky Shine III, Blue Cherry/Blue LEDs PCP&C 1kw Lian Li PC-71 (W/Window) 
MouseAudio
Logiteck G400s none 
  hide details  
Reply
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Overclock.net › Forums › Cooling › Water Cooling › [HELP] Two 140x2 SR2 Hardware Labs radiators - Series or Parallel?