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Radiator Confusion

post #1 of 4
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I am planning out the loop for my PC, which is a 3770k and GTX 690, both to be moderately overclocked. My goal is complete silence, so my plan is to use a D5 pump at low speed and 240 and 360mm radiators with low speed fans in push only - probably Noiseblocker eloop or PL-2 run at 600-800 rpm since I have had excellent results with these fans in my air cooled PC.

I had intended to get an NZXT Switch 810 and use XSPC RX radiators, since at 60mm thickness they are ideal for low speed fans. However, I have been looking at the new Corsair 540 case, and it seems better suited to my needs than the Switch 810. The only concern is that it does not appear to fit 60mm thickness radiators, but can easily do 30mm or 45mm. So I have been looking at the Alphacool XT45 and ST30 radiators, and their numbers seem very good, even with low speed fans. In fact the ST30 test results seem too good to be true - a 30mm thickness rad that runs at similar temperatures to 60mm rads with fans at 600rpm...?

If I am running fans at low speed, will the ST30 or XT45 be sufficient to cool my CPU and dual GPU? What sort of temperatures should I expect compared with using something like the UT60 or XSPC RX series. Are there any other radiators I should be considering?
post #2 of 4
Martin does some great testing, here is a rad round up that may be helpful.
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post #3 of 4
The thickness of the rad is not the only determining factor in how well it performs; fin density, fin shape, tube size and shape, materials, coating etc. all add up to how well a particular rad performs with any given fan speed.

Like Nomad692000 said, have a look at Martin's test results, they show both the ST30 and XT45 doing very well at low fan speeds. To be honest, all but 4 rads are within 10w heat dissipation of each other at 600 rpm, there will be little to no difference between them in real world usage:
Martin's results (Click to show)
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post #4 of 4
I've found the Aquacomputer XT (based on a Eheim 1046) to be a lot quieter than the D5.
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