CPU + GPU off a 140mm rad?

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Legend

Soldato
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I saw that EK have their Predator 140 QDC with GPU block, but is that actually a good idea, to run a CPU and GPU off a mere 140mm rad? I was more curious if it could be done with a custom loop actually, but my research had determined it wouldn't be a good idea... but then I saw this EK product... am I wrong? I am looking at cooling a 6700k and 1070.
 
I was of the understanding that the general rule of thumb is, 120mm rad per component and more if you're overclocking plus 120mm for headroom.

!40mm for all of that is very ambitious yet on of the members on here is using just a 240mm predator + a 120mm rad for his CPU + GPU. He seems to have decent temps.
https://forums.overclockers.co.uk/showthread.php?t=18751104

Only one way to find out though :)
 
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It would work, just temps would not be all that amazing.

Currently using a very thin 240mm rad to cool a 4690k (and whole motherboard as its a full cover block covering power delivery) and R9 Nano and temps while not amazing do fairly well.

With pair of EK vardars at around 1200 rpm, water temps remain in mid 40's and GPU temps peaks at around low 50's on the Nano OC'd to above Fury X levels and CPU temps typically top out at around mid - high 50's running at 4.7 Ghz OC on CPU. So overall not too bad.

I would expect the fan on the above kit would need to run fairly high to keep things cool.
 
Temps and fan noise level would not be great IMO but it would do the job. Suspect overclocking esp on the cpu might be limited.

The cpu seems to dump the most heat in my loop and I only keep mine in the 50s, gpu at 29c.
 
Here is a decent site for info. http://www.xtremerigs.net/2015/02/11/radiator-round-2015/5/

Here he gives you figures for the amount of power in watts a rad can cool at a given fan speed. He tests 360mm rads but it can give you an idea of the amount of cooling you will achieve.

Assuming you will be using an Ek SE 30mm thick rad? At 750rpm you will likely achieve about 50-60 watts, at 1300rpm which is the point at which you will start to hear the fans you will achieve 80-90 watts estimates.
 
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You'd have to make serious sacrifices in either noise or temps but it would be fine, especially at stock. The R9 295x2 produces 420W of heat whilst gaming and is cooled by a single 120mm rad. My only concern would be coolant temp in the pump as i know the D5 doesn't like temps above 60C.
 
I would also be worried about tubing issues at them sort of temps ....
Certainly want to make sure everything is well clipped together!
 
Well if it's teetering on the edge of possible with the Predator set-up (with some sacrifices for OC'ing, temps and noise) surely a custom loop with a superior rad etc. would do a better job? As mentioned above, I always thought the rule was 120mm per component and another 120 if OC'ing. Seems a stretch.
 
I ran an i7 6700K + R9 Nano with a single EK Coolstream PE240 and 2 Gentle typhoons @ 1850rpm with standard Asus fan profile, temps were around 65 for CPU, and 47 for GPU. Not great but certainly still not so bad. I think 140 rad is gonna be tight with 2 components.
 
For cpu and gpu I would want a good 360mm rad. I reckon a single 140mm rad for both components would give awful temps and the water temp could exceed 60 degrees which would then be a problem as most tubing is only rated to 60 degrees C. I would have though that sticking to air would be a far better idea in that scenario.
 
The case I am looking at using can only fit a 140mm rad (ITX), so it was always my intention to just watercool the CPU. It was only when I saw the EK 140 QDC I started to question why it existed... seems like it probably shouldn't haha!
 
You could use it in a system with an extra rad like someone else has done.

So you use the predator system with the inc pump but add say a extra 240mm rad for additional cooling potential. Hence expandable.
 
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