Hi,
So from experience, GPUs are much easier to cool. I found a 360mm did make a difference there.
The CPU however seems to operate at about 50*C (or higher) above the radiator temp under load. So straight away get ambient +50 or higher before the loop even gets involved.
Better thermal paste, better block, better fluid (than the NZXT I currently have) will get me a few degrees out of that 50 maybe.
Delidding, lapping... eh... no.
So my question is on radiator size.
Is it worth having as large a radiator as possible so you can keep the loop temp as close to ambient as possible, or do the economics of scale fail you?
I want to decide between replacing a 360mm rad with a 240mm one to cool an 5800X. With a Kraken x73 it idles around 40*C and Prime95 can take it to 90*C while the radiator barely gains 1 or 2 degrees. Compared to the GPU (Eiswolf) the radiator gets hot to the touch in minutes with the fans stopped. CPU radaitor, not so much.
As I understand how radiators work (a little), the two biggest factors are surface area and temperature delta. So a 360mm radiator at +2*C might be able to output just as much heat as a 240mm radiator at +5*C delta.
I suppose based on that alone, without going to an active chiller, the bigger radiator still gives a lower delta. And a bigger bill.
So from experience, GPUs are much easier to cool. I found a 360mm did make a difference there.
The CPU however seems to operate at about 50*C (or higher) above the radiator temp under load. So straight away get ambient +50 or higher before the loop even gets involved.
Better thermal paste, better block, better fluid (than the NZXT I currently have) will get me a few degrees out of that 50 maybe.
Delidding, lapping... eh... no.
So my question is on radiator size.
Is it worth having as large a radiator as possible so you can keep the loop temp as close to ambient as possible, or do the economics of scale fail you?
I want to decide between replacing a 360mm rad with a 240mm one to cool an 5800X. With a Kraken x73 it idles around 40*C and Prime95 can take it to 90*C while the radiator barely gains 1 or 2 degrees. Compared to the GPU (Eiswolf) the radiator gets hot to the touch in minutes with the fans stopped. CPU radaitor, not so much.
As I understand how radiators work (a little), the two biggest factors are surface area and temperature delta. So a 360mm radiator at +2*C might be able to output just as much heat as a 240mm radiator at +5*C delta.
I suppose based on that alone, without going to an active chiller, the bigger radiator still gives a lower delta. And a bigger bill.
