how much rad do i need

[IvIast3r]

so i want to custom water cool my i7 4770k oc to 4.5 and my gtx 780, how much rad would i need?

 

i a looking at 30 fins per inch radiators that are 25mm thick

[Maskot]

a 360 and a 240

[GeneralBear]

a 360 and a 240

i agree with this but the more rad space the lower ur fans can run to acheve the same temp so the more the better

[IvIast3r]

ok now say i do 50 mm rads

[Maskot]

ok now say i do 50 mm rads

2 240

[Gaming_Addiction]

A 360 and at least 30mm thick is all you need

[piplupgao]

Bare minimum 360 (won't get very good temps)

I recommend at least 520

[airdeano]

so i want to custom water cool my i7 4770k oc to 4.5 and my gtx 780, how much rad would i need?

 

i a looking at 30 fins per inch radiators that are 25mm thick

 

if you want quiet fans and low temps, you need to increase the radiator thickness and/or

decrease FPI usually minimum to hold less than 1200rpom fan speeds and tolerable

temps a 360x 60 or 2x 240x 60 radiators.

 

ok now say i do 50 mm rads

 

better.. how sensitive are you to constant fan noise?

what case is this all fitting in?

 

airdeano

[IvIast3r]

how sensitive are you to constant fan noise?

what case is this all fitting in?

 

airdeano

 as for noise, i'm not that concerned.

and the case is un-decided, but budget is no issue.

[TheMuskr]

I'm running an I5 2500k (4.5 OC) and a 780 (1253mhz OC) cooled by a 420mm,  60mm thick rad and get great temps. 780 never goes above 45
 

your CPU will put out some more heat obviously but I figured you could use a reference 

[airdeano]

I'm running an I5 2500k (4.5 OC) and a 780 (1253mhz OC) cooled by a 420mm,  60mm thick rad and get great temps. 780 never goes above 45

 

your CPU will put out some more heat obviously but I figured you could use a reference 

 

that's great for GPU and expected.. but the CPU is what is critical for temperatures.

what are you seeing for CPU temps and what voltage?

 

airdeano

[TheMuskr]

that's great for GPU and expected.. but the CPU is what is critical for temperatures.

what are you seeing for CPU temps and what voltage?

 

airdeano

sorry for the late response i was on vacation.  In prime95 CPU hits 60 degrees (1.33 v)

[warmmilk]

A 360 and at least 30mm thick is all you need

^this

 

to OP

Honestly this is really all you "need". Since you posted you don't care about noise you can prolly even get away with a 240 (45ish mm and thicker) and high rpm fans. From there you can add more rads and turn down fan speeds...

[Asusmad]

The normal minimum rule for water cooling is one 120mm wide by 25mm deap rad per item being water-cooled. Then plus one rad. So if your water-cooling a cpu and gpu you would want a 360mm rad. If you wanted really good temperatures and near silent running fans increase the thickens of a rads or add and extra one if you have the room.

 

I hope this is clear

My watercooling set up is as follows: I have one 240mm x 25mm all copper rad and one 240mm x 86mm rad. All have corsair sp120 quite editions with stepdowns to.

And this is cooling my CPU and GPU

Nice and quite. any more questions please ask. 

[Gaming_Addiction]

Honestly this is really all you "need". Since you posted you don't care about noise you can prolly even get away with a 240 (45ish mm and thicker) and high rpm fans. From there you can add more rads and turn down fan speeds...

Not sure what your talking about. A 240mm rad will not give very satisfying results because a 360 has more surface area even if the 240 is 45mm thick. I don't think I ever posted "I Don't care about noise" but if I did that has changed. If OP can fit a 260 then he should fit a 360. If not I recommend he adds a 120mm / 140mm to the rear of the case 

[warmmilk]

Not sure what your talking about. A 240mm rad will not give very satisfying results because a 360 has more surface area even if the 240 is 45mm thick. I don't think I ever posted "I Don't care about noise" but if I did that has changed. If OP can fit a 260 then he should fit a 360. If not I recommend he adds a 120mm / 140mm to the rear of the case 

 

I clarified my original post.  I was quoted you as to confirm what you said, my actual comment was directed at the OP.

 

what I meant by the 240 comment is that it would be enough to run the system.  Of course a 360 or more would be better.  But as far as bare minimum you can easily run a cpu and gpu on a thickish 240 as long as you have some pretty good fans on it.