When do you need a second D5 pump?

[Kitsan]

I have a hardline watercooling kit, i'm building up the nerve to install. I was wondering at what point, generally speaking, do you need a second D5 pump?

 

(My loop will be a basic 2x360mm rads, raystorm block, d5 pump, 270mm photon reservoir)

[For Science!]

7 minutes ago, remus243 said:

I have a hardline watercooling kit, i'm building up the nerve to install. I was wondering at what point, generally speaking, do you need a second D5 pump?

 

(My loop will be a basic 2x360mm rads, raystorm block, d5 pump, 270mm photon reservoir)

Generally speaking, almost never. Yours for example is completely fine for a long time. Personally i think its more for redundancy on machines that have a long up time.

 

My 4 GPU + 2990WX workstation with 1200 mm worth of radiator space has 2 D5s but i think for flow alone, one might still have been okay, but as this machine is on almost 24/7 a bit of redundancy makes me sleep easier at night.

[Mick Naughty]

When you want more flow and not increase the noise. Assuming the two will be quieter at 30% than one at 60% and so on. 

 

That was the case for me. My temps always go down a little with more flow. Just weither or not that cost and space taken is worth it. 

 

Still went back down to a single pump per rig. 

[Blai5e]

The other reasons for a second pump: 2 separate loops in a system or 2 systems in 1 case.