Dual Pump/Res Combos, Single Loop?

[MandicReally]

I am debating changing my loop up.  Currently I'm running two separate loops in my system.  One loop for my Monoblock on my 2700X and VRMs. The other solely cooling my GTX980.  

The "oh so wonderful" Alphacool VP755 pumps I'm running are garbage.  Alphacool replaced them once under warranty already (I built this setup about 8 months ago).  The one on my GPU loop has intermittently begun to fail.  

 

Since my GPU pump is failing I'm considering making my setup a continuous single loop.  However I'm running two pump/res combos.  So I'm having a hard time deciding how I should do this if I am going to do it.  I'd like to leave both pumps, so I could just run them low speed and still have decent flow.  If the GPU pump kicks out I'd still have the CPU pump to maintain the system.  However if that happened I feel like the CPU pump would fill the GPU reservoir before it would really pump through the system.  Theoretically that should be fine, but it also wouldn't be efficient at all. 

Another reason I'm considering this is I started playing around with Overclocking my 2700X and found the temps higher than I loved.  Completely managable, but if I could get them lower I'd like to. I do video work mostly so often when the CPU is working hard, the GPU isn't or vice versa.  So if I share the 2x 360 radiators between the loop it should help to even things out I think. 

And finally, the only reason I don't just ditch the second pump/res combo entirely is that this is all built in a Tower 900 case, and the dual pump/res combos have a nice symmetry in the build.  So losing one would ruin that.  

Any thoughts?

Currently the cooling system consists of:

2x Alphacool VP755 Pump/Res combos

2x EK XE360 slim radiators

1x GTX 980 with a Bitspower Full coverage block

1x AMD 2700x with EK Monoblock on Gigabyte X370 board

 

 

[NoobCase]

There is no real issues with running a dual pump (or res) loop

[Dschijn]

16 minutes ago, MandicReally said:

The "oh so wonderful" Alphacool VP755 pumps I'm running are garbage.

Yes, my 755 got replaced 2x as well. Crappy pumps.

 

Dual pumps are overkill for your loop, but you want to run them I don't see a problem.