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Ony 1 GPM with 2xD5@100% : is anything wrong ?

Water Cooling - www.overclock.net
Hello everyone,

Regarding my "Fast Learner" build below, I only get 1GPM with the 2 pumps full speed

Readings :

- 2x D5 @ 100% : 256 lph / 1.10 GPM [ pumps run @ 4815rpm]

- 2x D5 @ 65% : 188 lph / 0.82 GPM [ pumps run @ 3750rpm]

- 2x D5 @ 35% : 132 lph / 0.58 GPM [ pumps run @ 2850rpm]

Temps with the setup

- controller set for a Delta T° at 8° to run the pumps @ 65%

- full CPU load, after 1h : 60° (6900K @ 4200 with 1.20v with fans @ 900rpm)

I believe those temps are OK ?

Setup :

- 2x D5 PWM USB from Aquacomputer, driven by an Aquaero

- goes to 2x 1080Ti EK waterblocks with a EK-Terminal Parallel

- goes to an EK Asus X99 monoblock

- goes to a HardwareLabs Nemesis 480 GTX rad

- goes to a HardwareLabs Nemesis 280 GTX rad

- goes to a HardwareLabs Nemesis 560 GTX rad

- goes to an Aquacomputer High flow sensor

- goes back to the rez

Adaptor / fittings config

- 1x "2x45° EK adaptor out of the pump

- straight out of the pump, I have a T adaptor for one of the drain valves

- between the CPu and the first rad, I have a T adaptor (this allows me to have an air intake...but I know for a fact waters goes in that tube as well)

- 1x 90° fitting between the 280 and the 580, connected to a T adaptor for the 2nd drain valve

- Flow sensor is connected to the 580 out via a straight extender, and there is another extender before plugging a 2x 45° adaptor

- water goes back in the res via a 90° adaptor

- all other connections use straight fittings

The flow sensor :

- is calibrated with the right value in Aquasuite (169 ticks per litter)

- has stright adaptor (30mm on both sides before being plugged to bends '); }
Date: Jan 12, 2018   


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