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Advanced testing on Watercooling 92mm inside Cerberus-X
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As I was impressed by cooling efficiency of Asetek 645LT, using rear 92mm slot inside my Cerberus-X, I decide to build customed loop using best 92mm radiator (
Hardware labs Nemesis M92 GTX)
In terms of waterblock/pump I used my old (from late 2015)
Here it is, in my bitfenix Phenom, full watercooled...that was not successful with that pump. Now I know it was related to my quick connect/disconnect (from Koolance) that were way too restrictive for this pump. (it worked like a charm with DDC..
)
I've chosen this pump as it's small enough (radiator is quite thick with 54mm), and quite easy to fill (but air bubbles draining was not..
)
For once I used Mayhems 10/16mm transparent tube to try to minimize evaporation. I always recommend using transparent tubing in customed AIO to easily check liquid level.
As usual I used barbed fitting with hose clamps...cheaper and safest choice as you always see where is tube...
I also replace all ring seal on G1/4" fittins (white one to see them well)
In terms of fluid, I used distilled/demineralized water + EK red cryofuel (concentrated coolant)
Filling the loop was quite easy :
- Clean radiator with distilled water (2-3 times)
- Fill radiator with one tube put in place
- Connect tubes to pump (beware Nemesis M92 GTX has a specific IN/OUT. Please note outlet of Alphacool/Fractal design waterblock pump is on the right, same side of Fractal design logo)
- Fill the loop using fillport of waterblock/pump using external PSU (almost mandatory with all customed loop..)
- Drain loop of air bubbles using up/down movement...please note fillport from pump is NOT a very effective airtrap (like all fillport option)... I spent 20 minutes to remove as much air as possible. I've still air bubbles...but at least I can't hear them...so I'm fine..
- Check for potential leaks & Clean waterblock with paper towel to make sure no liquid drop will come to motherboard
- Job's done
- For info, I've almost used as much liquid to fill the loop than with my Apogee drive II + MCR 220 (240mm radiator) : 250ml vs 175ml. Asetek 645Lt is using 86ml
Here is my setup to drain airbubbles (i love my small G1/4" funnel to fill..
)
Strangely enough, hardest part of this assembly was to dismount "glued" AM4 backplate to mount AM3 backplate (I'm still in prototype mode)
And tada, here it is in the all-mighty Cerberus-X :
I found final result gorgeous!
Now it's time to pump noise test, as you know, I'm pretty sensitive to noise, especially from pumps..
From start I was a little bit sad as I was expecting near silent operation, like my Apogee drive II @1200rpm.
However, to be honest, while at 5v (1100rpm) Alphacool DC-LT is not distractive. I will qualify as very quiet at idle/low load.
While gaming, GPU is taking the lead on noise (fans & coil whine) leading to Quiet area (I can play with speakers with no issue. Headphones are far from being mandatory)
In terms of performance, my Ryzen 7 3800X overclocked at 4.3Ghz all cores at 1.3125v is reaching :
- 82°C under stress test
- 80°C on video encoding (Da Vinci encodern using all cores)
- 50°C-60°C on gaming load
ps : I returned to RAM at 3200MTS with CAS 14-14-14-14-34...I'm reaching better numbers than may overclocking to 3800MTS
I'm planning to continue trial for several weeks/months to see how customed AIO will behave (evaporation, noise, etc..)
For now, I'm pleased with level reached.
2 years old now and "only" 6kg.
