Loop Setup: CPU then GPU or vice versa

[Author_25]

I am setting up a new water cooling loop and have noticed that many new setups are cooling the GPU then the CPU.

Normally I would cool the CPU first then the GPU. Does cooling the GPU first make any difference to overall cooling or does it make no difference at all?

My set up would be one of the following.

Pump/Res>Alphacool NexXxos ST30 240mm>GPU>XSPC AX360>CPU>Pump/Res

Pump/Res>XSPC AX360>CPU>Alphacool NexXxos ST30 240mm>GPU>Pump/Res

The AX360 would use 6 Alphacool/Noiseblocker E-Loop 120mm fans (2300rpm) in push/pull configuration.
The Alpha cool radiator would use 2 E-Loop Fans in a push configuration (mounted at front of the case)

CPU would be cooled by an EK-Supremacy block and the GPU by an EK-Thermosphere universal block.

 

[Author_25]

Thank you for the advice.

The shortest route would be the gpu followed by the cpu so I will follow that route.