Help on Loop with CPU GPU

I need some advice on how i will watercool my GPU CPU

Currently if you take a look at my thread in the sig you will see the build.

The current flow is water goes like this

PUMP>CPU>MOBO>240MM RAD> 360MM RAD > reservoir > back to PUMP

My CPU temps float around 25-29c on the 6700k @ solid 4.5Ghz.

I'm about to add 2 x GTX 1080's

Would it be sensible to have the flow as

PUMP>GPU1 > GPU 2 > CPU>MOBO>240MM RAD> 360MM RAD > reservoir > back to PUMP

or

PUMP>CPU>GPU1 > GPU2 >MOBO>240MM RAD> 360MM RAD > reservoir > back to PUMP

I guess in essence best to have it hit the GPU's first then CPU second or CPU first then GPU's second?

Shouldnt really make a difference, ive swapped the direction around of mine a few times without noticing any difference, i guess maybe if ya pump was running really slow then it might be better to put the CPU first so ya dont have warm water from the graphics cards hitting it, but i wouldnt think you would run the pump that slow anyway.

BluD said:

Shouldnt really make a difference, ive swapped the direction around of mine a few times without noticing any difference, i guess maybe if ya pump was running really slow then it might be better to put the CPU first so ya dont have warm water from the graphics cards hitting it, but i wouldnt think you would run the pump that slow anyway.

Click to expand...

did you notice the overall temp go up due to the gpu;s

Yeah you will need to turn the fans up a bit, youll have to get rid of three times as much heat as before adding the gpus.

Cant really compare to mine as i have 290x cards and they kick out much more heat. I had to add more rads to cope but im sure youll be ok with them efficient 1080s

The order of the loop doesn't really make much difference, 1-2°c at best, the liquid will stabilise throughout the loop

I agree about placement. Doesn't really matter because the water flows fast anyway. Just a point Laing recommend have a rad before the pump/res to keep the water cooler through the pump.