Log Walrus mk02: a 3D-printed brickless ~4L case with external radiator

SoSquidTaste

SFF Lingo Aficionado
Feb 26, 2018
122
189
Just got to this build thread from your signature line elsewhere in the forum. I've got nothing to add except to say damn that's bordering on perfect space optimization in your design. And the window to let the special edition EK block fully show its stuff is eyepoppingly good.

So I take it that the performance of that dummy thick radiator is good enough to keep. But was it simply not bad, or was it as excellent as advertised with respect to static pressure airflow, fin density, etc. as theorized / discussed way back when back in April?
 

morj

Cable-Tie Ninja
Original poster
Bronze Supporter
Feb 11, 2020
193
337
Just got to this build thread from your signature line elsewhere in the forum. I've got nothing to add except to say damn that's bordering on perfect space optimization in your design. And the window to let the special edition EK block fully show its stuff is eyepoppingly good.

So I take it that the performance of that dummy thick radiator is good enough to keep. But was it simply not bad, or was it as excellent as advertised with respect to static pressure airflow, fin density, etc. as theorized / discussed way back when back in April?

The performance of this radiator is excellent, it's very far from being a bottleneck. I think I hit the sweet spot in terms of performance for my needs. Even when I'm abusing my PC with a stress test (pulling about 580W at the wall, CPU pulling 160W and GPU pulling 307W simultaneously) the water temperature never reaches the "final" 40°C (that's the reading when the fans should reach their maximum 800 RPM).

I'm really glad I used the 200mm fans, even at full speed their sound is very pleasant (low frequency hum), and absolutely no whooshing from the air going through the radiator.



Here is the aquasuite screenshot with my fan curve. Only about 7 minutes after the stress test and the fans are already back to 360 RPM from 770 RPM and the temperature is dropping to 30° and then further.

The weakest point is the PSU: after 40 minutes of this 580W stress test my PSU temperature probe reading creeps upwards to 80° giving the puny 40mm fan a hard time. In gaming or productivity workloads (when only one of either CPU or GPU) are fully taxed this is not a problem, the PSU keeps up just fine.

EDIT: when running only FurMark (307W at GPU), the water temperature settles at around 36.6°-36.7°.
 
Last edited:

SoSquidTaste

SFF Lingo Aficionado
Feb 26, 2018
122
189
Absolutely amazing to hear. Your build alone has me questioning my vague opposition to SFF case --> external radiator. Bravo!
 
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