Adding to the water cooling loop

[astinkybumb]

Backstory/setup

AMD FX-8120 CPU
XSPC Rasa 750 RS240 Water cooling kit
- 4 fans in push pull formation
Rad at top of the case pulling air down in, loop goes
pump>up to rad>down to cpu>over to pump

I am thinking of upgrading my current GPU from 2x 1gb 6870s (non CF) to 2x 7000 series (probably xfx DD 7870s)

My current CPU doesn't run over 38c while running battlefield 3 in eyefinity at 5040x1050. If i go better GPU's i will definitely water cool them because i already have summer problems with my current GPUs getting way to hot.

I come to you with some questions, can my current pump/rad keep the CPU and 2 7870s under decently cool temps like 40-45c?
If not can my pump handle adding the 2 GPU's and say a single 140 rad at the bottom or back of the case?
Also should i go full GPU block or just universal water block and passive ram cooling?

 

[just a noob]

I doubt it, that's a pretty thin radiator. I also have my doubts about that pump being able to push through much more than the current loop too.

 

[astinkybumb]

you dont think even just GPU boards could be added? even with just one rad? i currently have a game running and has been running almost all day and its sitting comfortably at 22c this whole time.

 

[astinkybumb]

What if i added another loop to the system? kept the CPU on the current loop but maybe changing to a smaller rad like a thick single 140 and adding another pump to the GPU's and running them to the 240 rad? would it just be a cluster of hose or would this be a better route to go?

 

[just a noob]

That would be the better way to go

 

[astinkybumb]

would my cpu be alright on a single 140/120 rad with another pump? and would the 240 rad at the top be able to keep two GPUs cool? or is the 240 to small?