Hey guys!
 
I recently had an opportunity to get a 980x for free and an EK full MB cover for my E760 classified for 20$ 
 

 

 
I'm currently running the 980x under a swiftech H320 AIO watercooling (EK WB not installed) and could easily get it to 4,7 Ghz prime95 stable 1.45v with reasonnable temps (i only have the screen for 4.6 but it's also stable at 4.7). Max screen 1.45v 5.2 Ghz:
 



 
I think this chip has the potential to reach 5 Ghz at 1.55 / 1.6V so I was thinking i could build a powerful WC system around a huge radiator to keep the 980x temperature low even under these voltages. Somone could sell me this radiator for 100$:
 

 
So i'm wondering what do you guys think about this project? Do you think it's possible? Do i risk killing the 980x at these voltages even if I keep it cool (which temperature do i need to keep it under? I was thinking 40°C max?).
 
TIA for your help ;)

PS: just bought this baby today for 35$ :D
 

 
 
 

Bought the radiator: it's gonna be a Phobya nova xtreme 1260 like this one:
 

 
I will be using 4 200 mm fans on top of it, i hope it'll be enough cooling power :D
 
Also bought an aquaero 5 controler for the fan / pump / flow speed and temperature control :)
 
Also found a nice guy that sold me an EK WB for my GTX 670 for 15$ :D I wont be using this card for long tho, it will be soon replaced by a 1080Ti (hopefully from evga !) but it'll help me setup the WC loop :)
 

 
Still need to find a pump and the reservoir. If everything goes as planned i should have everything up and running in 2 weeks!

Haha well if i could find a 400mm fan i would have used it but 200mm is the biggest i could find that fit :D

Update: after 10 hours of investigations i realized that using the alphacool eisblock XPX waterblock for the CPU is actually a terrible idea as it would make the loop too much restrictive compared to the low restriction of the others waterblocks.
 
For those who wants to know the details about this conclusion i've detailled why here: https://www.reddit.com/r/...g_pump_and_res_please/
 
So i decided to get an EK supremacy EVO CPU WB instead along with an EK D5/res combo :) 
 
I ordered everything, will receive my care package next week ;)

You're 100% right. Thank you for this great advice! 

Well some final updates for whoever is interested in the results ;)
 
I updated my guetto fan to 9x EK Furious vardar 140mm fans, these babies are wonderful!
 
When stress testing with Prime95 @ 1.52v it's working, but when i stress test the GPU in the loop it still fails :(
 
The water temperature is still amazing with this rad and these fans, it's almost always at my room temperature with a nonexistent delta!
 
But even with cool water running evenly between all components the CPU generates too much heat too fast to transfer it to the water so it overheats to 65°C / 149 °F on prime95 with the water still at 26°C / 79°F with so with a water / CPU delta temperature of over a crazy 40°C / 104 °F!!!
 
I've checked everything: the thermal paste is well applied, the CPU contact with the waterblock is perfect, the waterflow is good... But the delta between the CPU and water is still this big!
 
I thought about deliding the processor for a time but i found a message from someone who did the same on a 980X and even with direct on die watercooling he had almost the same results as with the IHS, probably because the IHS from this series of processor was soldered with iridium and so is much more efficient than the newer CPUs IHS which are just glued with bad thermal paste.
 
So it looks like i've hit the limits of "classic" watercooling here :) I could have gone for a water chiller but i doubt it would have changed things much since the real problem is that the CPU / water heat transfert is the problem. 
 
So anyway i've learned a lot doing all of this, I had the assumption that if i had a radiator big enough the cooling on the processor would follow, but it did not!
 
Well it still helped me to reach an amazing overclocking: i can run at 4.8 Ghz on all 6 cores HT ON @ 1.48V on a full Prime95 + occt gpu 120% TDP max voltage stress test for unlimited time with no errors with fans at 50% on the rad with almost 0 noise! Pretty amazing :)
 
So this ends this journey :) Thanks for everyone who followed and helped me!