Watercooling Help Needed for i7 8700k

[gtr2244]

 PC: 

i7 8700k oc to 4.5ghz right now probably 5 ghz later, cooled with a Noctua NH- D15S dual 140mm fans

GTX 2080 Ti reference,  stock settings cooled with a Corsair rgb waterblock

Asus z390 E motherboard

Corsair 750w psu

Fractal Design S case

 

 I have a EKWB pump/res combo with a slim 360 radiator for my gpu. My question is would a EKWB PE 120mm radiator be enough for the cpu? Or should I get a 240 radiator? I did try running the cpu and gpu off the slim 360, the cpu temps were in the 70'sc under load. I'd like to see the temps lower. Thanks.

[Firewrath9]

for the CPU I'd reccommend at least a 240mm rad. you might be able to do it witha single 120mm 60mm rad. Don't get EKWB's rads, the thin ones are pretty bad. Search up hardwarelabs, their rads are great, a good bit better than the EKWB ones. Corsair's rads are OEM versions of hardwarelabs rads, except they are are a little less wide.

[Mick Naughty]

If you mean enough just for the cpu sure. Unless you mean to add to the loop. I’d do a 240 or 360. What ever you can fit. 
 

I use a pair of 280’s for mine. The thin ones unfortunately. But still keep both parts in the high 40’s for temp with fans at 40%. But the cpu is delided. So it would be in the high 50’ prior. 

[gtr2244]

 What type of 240 radiators? I use EKWB, the sales rep recommends a thick radiator. The 360mm slim cools my 2080Ti to 45c during games. So I was thinking a thick 3mm 120mm for my delided 8700k.

 

[Mick Naughty]

26 minutes ago, gtr2244 said:

 What type of 240 radiators? I use EKWB, the sales rep recommends a thick radiator. The 360mm slim cools my 2080Ti to 45c during games. So I was thinking a thick 3mm 120mm for my delided 8700k.

 

Depends, where is it going, is there going to be an interference issue with the board? I get the matching rad for the 360 and what ever thickness you can fit. Comes down to the fan used and fpi. 

[MaratM]

get the biggest you can fit in your case,

I'm running a delided 8700k (stock MCE enabled) on z390i with a EK monoblock and a gtx1080ti (EK-FC) all of it with a d5 and 2 240GTS (slim) HWLabs, It gets around 50+C on the GPU and CPU on a long session of Doom Eternal. But the fans are running too fast for my liking. I wish i could use bigger rads but they just do not fit in the case (mini itx)