How Much Water?

[1963SS]

Hey Guys, I'm building my first computer and I'm water-cooling rig. My goal is the most performance with the least noise. I'm using a Hardware Labs Nemesis Black Ice 360 radiator, Swiftech 200mm reservoir with some kind of modded D5 pump, a Thermaltake CPU block (I9-9900KF) an Alphacool Gpu block on a 1080 ti that used to be a Sea Hawk until the pump died. I installed a Thermaltake Temperature/Flowmwter gauge inline just before the radiator.  I can't find any information on how many Liters per Hour is acceptable.   My gauge says that the water temp is 27 degrees and the flow rate is 180 LPH. Does that sound about right? The CPU stress test with all cores was around 68 degreees at 100% load and overclocked to 4.9. The GPU never got above 30 degrees while running Kombuster. Those results sound about right but I was just curious about the LPH waterflow.  Thanks for any advice from you pros. I'm just a 73 year old rookie. 

[Firewrath9]

Generally .5-1 gallons per minute is good, or 120-240 liters per hour, so 180 sounds about right.

[1963SS]

Thanks. That helps calm my concerns. Quick response from a very knowledgeable forum. 

[B4Quattro]

Hi, my Aquastream XT pump creates in silent mode around 90 l/h (max. 120) of flow and my water temperature never exceeds 3°C above ambient (2520mm radiator space). The german PC Games Hardware suggests at least 30 l/h and that there isn't much gain above 60 l/h.

[SolarNova]

Target is 1 GPM, beyond that u get diminishing returns, below 0.75 GPM u start to see greater differences with 0.5 GPM being the minimum.

 

Thats 115 to 230 LPH

 

180 LPH is about 0.8 GPM so ur in the right area.

 

If u have the option to speed up the pump some more, do so.

 

I personally run a D5 vario in my system that uses a physical dial to set the speed, i run it maxed out all the time to ensure i get as much flow as possible. Its rated for 1200lph (5.3 GPM) how much it actually manages in the loop i dont know for sure as i dont run a flow meter. I'm probably somewhere in the region of 1.5-2.5 GPM (340 - 570 LPH).

[Shadow_Storm56]

Your temps are good also. 

[AnonymousGuy]

7 hours ago, SolarNova said:

Target is 1 GPM, beyond that u get diminishing returns, below 0.75 GPM u start to see greater differences with 0.5 GPM being the minimum.

Basically anything above a trickle is fine unless you have a component dumping 300W+ into the loop and even then you'll probably only see a couple C delta over the inlet and outlet of that component.  People wildly overestimate how much flow they really need.