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Loop configuration

Post Date: 2010-12-29
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breadCrumb View Drop Down
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Posts: 28 		  Quote breadCrumb Quote  Post ReplyReply bullet Topic: Loop configuration
    Posted: 29 Dec 2010 at 3:39am
Just kinda curious what has given others the best results.  Right now I'm running a d5 pump to the cpu then to the mobo block to a 240 rad and back.  I was considering purchasing a 360 rad to add to the loop.  I was curious if having the pump immediately go to the 240 rad then to the cpu and mobo would be wisest route, cooling the liquid from the heat the pump generates before it reaches the CPU or would it be better to go pump -cpu -360 -mobo -240 -pump?  I'm just curious if its practical to run the loop immediately to the rad?  What got me concerned about this was I was running the loop with no power to the mobo to test for leaks and I was alarmed that the rad warmed up as much as it did from the heat the pump puts out.  So what has worked best for you guys?
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justin.kerr View Drop Down
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Posts: 5084 		  Quote justin.kerr Quote  Post ReplyReply bullet Posted: 29 Dec 2010 at 9:05am
loop order will have almost no impact on temps.. water moving at 1.5 GPM needs around 250 watts of heat to raise the water temp 1C, so you can see that in the loop the temps will not vary more than a couple degrees C, no matter where you measure the water temps at.
The pump only put 10-15 watts of heat into the system.
The loop order that will use the least amount of tubing is usually the best route, in order to keep the flow rate as high as possible.


Edited by justin.kerr - 29 Dec 2010 at 9:06am
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breadCrumb View Drop Down
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Posts: 28 		  Quote breadCrumb Quote  Post ReplyReply bullet Posted: 29 Dec 2010 at 9:39pm
Well that simplifies things.  Follow up question tho; any particular brand of radiator you'd recommend?  I'm not really concerned about noise levels and typically mount 1600-2000 rpm fans on them, so other than fin spacing I don't see much of a real difference between them.  I wouldn't be surprised to be told I'm incorrect however. 

Completely unrelated to topic....

Also curious if LLC is safe to enable on a 1.35 Vcore? I've heard the spikes can be as much as .3 and I'm wondering if this is true or not? 
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justin.kerr View Drop Down
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Posts: 5084 		  Quote justin.kerr Quote  Post ReplyReply bullet Posted: 30 Dec 2010 at 9:09am

for the price, the Swiftec radiators perform very well with medium speed fans.

There is a huge difference between radiators, some offer really poor performance with medium speed, and slower fans, and some are very restrictive on the water flow side.  Again the Swiftec offer a very good performance to price ratio. Some of the Black Ice stuff is super flow restrictive, and gives very, very poor results with slow-medium speed fans, I would stay far, far, away from them. They do offer the SR-1 series, that has good water flow, but are only good with low speed fans.
 
LLC, is safe.  with it off you will need more V core to  compensate for the voltage droop, but you will need the same under load voltage to be stable, so use a lower V core and use LLC to bump up the voltage under load, or use a higher V core, so that under load it will droop to the same voltage as when LLC is enabled.  Your choice. really does not matter.
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breadCrumb View Drop Down
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Posts: 28 		  Quote breadCrumb Quote  Post ReplyReply bullet Posted: 31 Dec 2010 at 1:02am
Glad I asked, the Black Ice was exactly what I was looking at.  I'm thinking maybe I'll go with the MCR320 instead. 

Also got a Swiftec "flagship" right now as the cpu block, and I've been reading about the Heat Killer and the good reviews there.  Any experience with the two, whether it would be a waste of money to switch the two?  I don't expect jaw dropping results, but a 5-8 degree drop in temps would be enough to not feel the switch was redundant.

Right now I have no real reason to need to upgrade anything, I have a good stable 4.2 oc and acceptable temps (tho idle temps I believe may be some what high), but every time I seem to get things stable I develop this itch to push things further.

Anyway thanks for the responses, they've been quite helpful.
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justin.kerr View Drop Down
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Posts: 5084 		  Quote justin.kerr Quote  Post ReplyReply bullet Posted: 31 Dec 2010 at 11:07am
The Swiftec XT CPU water block is very good, the Heat Killer will not be any better.  The Cuplex Kryos XT, and the EK supreme HF with copper top will both best the Swiftec, but only by  a degree or 2.
If you did not have a new water block I would suggest the XSPC Rasa, it is the best value right now, good temps, good flow, and cheap. lol
 
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