Does My Loop Have Enough Heat Dissipation?

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Spongeman131

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Oct 29, 2012
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I'm looking to add 2 GTX 780 Tis to my current loop that already contains an i7 3930k (not overclocked).

I'm currently running 2 radiators in the loop

-XSPC AX360 w/h 3x Enermax T.B. Vegas Duos in pull

-XSPC RX240 (pretty sure it's Rev2) w/h x2 Scythe Gently Typhoons AP-15s (1850 rpm version) in push


Are these enough to keep all the components I've listed cool without overclocking?
Using the Power Supply Calculator listed on the Watercooling sticky, I come up with 646W.

Eventually I'd also like to be able to overclock the CPU if my loop can dissipate enough heat. Can it?

If it helps, with the AX360 fan speeds at 72% and RX240 fan speeds at 52% my current delta T under full load is ~4 degrees Celsius even on a hot day in the house.

I also got some help from rubix before building this whole thing last year, he had this to say:


I've got one 360 and one 240. Reviews I saw for comparing the AX series to RX series listed them at similar performance.

Thanks guys.
 
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I'd say you should be fine. I have a fx 8350 clocked at 5.2, and dual gtx 770s on a 360mm and 240mm radiator. cpu temps are around 60-65, and both gpus run around 40's while gaming. Loop temps are normally 45-50, have seen then get up to 60, but that was major bench for almost an hour.
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Dblkk

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I'd say you should be fine. I have a fx 8350 clocked at 5.2, and dual gtx 770s on a 360mm and 240mm radiator. cpu temps are around 60-65, and both gpus run around 40's while gaming. Loop temps are normally 45-50, have seen then get up to 60, but that was major bench for almost an hour.
 
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Spongeman131

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*whistles* Nice. What fans and radiators do you use? For performance comparisons sake.
 
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Dblkk

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Fans are all 120mm corsair high performance pvm fans. And radiators are both xspc, i think the 360 is around 50-60mm thick, but i know the 240 is 80mm thick
 
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Dblkk

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oh, ill also note, that fans for radiators are best used for pull, makes it alot easier to clean dust without having to take fans off to do so. I use 2 seperate filters, one finer than the other, yet dust still gets in. And another note, push/pull has no additional affect over pull or push. Just by far more fan noise, more expensive ($25) a fan, and more than likely at least a fan controller of some sort to be able to plug all those bad boys in. I already have on fan controller since my loop requires 5 fans, i have 1 exhaust on mobo side, and two 80mm fans on psu/hhd raid bay side. But in line thermostat of some sort(like $20) is really really something nice to have. As well as a cheap ($10) pressure guage.
 
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Spongeman131

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I use an air compressor to clean out dust so that's not a problem. :p



I completely agree on the thermostat and have 3 (one exterior, 2 in-line). Why would you want a pressure guage? Wouldn't you want a flow meter?

 
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Dblkk

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Haha, good catch. That's the electro/mechanical engineer talking. Deal with hydraulics and pneumatics at work, we use pressure gauges. But yes, flow meter would be what I was referring to
 
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Spongeman131

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I'm pretty sure I've heard that flow meters decrease your flow rate because of how they work to measure it. Might have been because they were more constricting than the tubing leading into them, I can't remember. Is that true? And why would you say they're nice to have?
 
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Dblkk

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Yes they are restrictive, kind of how they operate. Usually a ball or some type that sits inside a cylinder, when water flows through it moves the ball against some restrictive force, the more the ball moves the higher the flow of the water is. Don't think that it would ever be restrictive enough to cause a negative effect on your loop, unless your loop was borderline to begin with.

Flow meter is nice, because it shows the flow of your loop. Otherwise you really don't ever know. And for me it makes a great quick reference as to how my loop is performing. Thermostats are great, but if the water isn't flowing, temps will still be what they normally are, maybe a little lower. So if something goes wrong, and either blocks the flow or your pump isn't working well, you wont know until its a bigger problem. Which would be your CPU or gpu overheating and computer freezing or shutting down, which might bring about a bigger problem than the loop itself. I use my flow meter for that, when its in the middle (don't know ppm or anything) but when its in the middle I know everything is flowing good. If it were to drop or get higher, then I know that something is going on and can stop what I'm doing and pay some attention to that.
 
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