r/watercooling

Just some data points for a recent client build.

"3x GPUs at 92-97% continuously full-time with the CPU at around 50%. 

Under that load with an ambient temp of 27.1C the coolest part of the loop (just after the last radiator) is 37.4C and the hottest point (just after the distribution block outlet) is 44.0C.  T

The GPUs hover around 52-54C when under this 92-97% load with the fans at a ~1,300 RPM.  (It would be much cooler with the fans at max)

Flow rate is 250l/hr with the two D5 pumps running flat out at 4,800 RPM. For most loops, 120/hr is enough. The higher flow rate is needed due to the length of the run between the radiators (hence the high delta of the coolest and hottest part of the loop.) More upgrades are planned for this down the track as another GPU will also be added.

25 Noctua fans 5 x radiators (Mix of Thermaltake & Alphacool)

ASUS WRX90E – SAGE

9965WX ThreadRipper Pro w/ Watercool Heatkiller IV Pro (Pure Copper)

3 x Gigabyte 5090 Gaming Pros with Alphacool ES Waterblocks

Alphacool C5 Distro plate & NexXxos Rads

Aquacomputer OCTO, High Flow NEXT, Ultitop Dual, Leakshield & DP Ultra

Watercool Heatkiller Tube reservoir

Some of you may have seen my "Local LLM Build" I posted a week ago.

This is my other build.

285k, z890 hero, 148gb ram(I love that the new intels chips can handle this), 4090, crucial t7, dual 44mm 360 rads, dual distros, dual d5 pumps, corsair hx1500i, one elgato 4k pro and 2 elgato 4k x's

I got a great deal on a EK FLT80 and swapped out my old AQ Aqualis Eco 100ml reservoir. I then took out my my Modultra Lobo and put in a new AQ Cuplex Kyros Waterblock, and swapped out the High Flow 2 for the Next Version. I also swapped out some fittings and changed the loop order to have proper in/out on the GPU and made a custom Info Panel layout for the Lian Li screen.

Gigabyte B550i Aorus

Ryzen 5800x3d w/ Aquacomputer Cuplex Kryos Block

MSI Ventus 4080 Super w/ Granzon Full Armor Block

GSkill 32gb RAM

Asus ROG Loki 850w

Aquacomputer Quadro

Aquacomputer High Flow Next

EKWB FLT80

Lian Li Wireless TL 140mm Fans

Lian Li 8.8 Universal Screen

Alphacool Nexxxos Nova 1080mm Rad with 9x Arctic P12 Pros

Koolance QD3 Panel Mount and QDs

Watercool 10/16 EPDM

Dracaena and EKWB Fittings

Hi everyone. I'm calling on your collective wisdom. I bought a secondhand computer that has a custom hardline water cooling loop. I am a complete novice to water cooling but it looks like the coolant levels are low and that I need to clean the whole loop. My challenge is I cannot find a clear drain or fill port. Do you have any advice or suggestions on how to drain and clean the loop without screwing up? Thanks!