is it worth having 2 rads in a cpu loop ?

Soldato
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what i was wondering if it was worth havin a second single rad in a watercooling cooling an i7 what i was considering was

xspc750 pump/res>thermochill PA 120.1>EK Supreme LT>xspcRS120

my idea was as its going to be in a small case it would keep the fluid in the res chilled and thus lowering temps more

has any one tried this and if so is it worth it ?
 
Your not going to see a great deal of drop from experience. I gained 2-3 degrees at best by adding a 120.1 rad in the loop with my RS120

My loop is as follows

XSPC750->EK coolstream 240>xspc rs120>xspc delta v3
 
should do, when i had a swiftech 120.1 my temps reached high 80's around 4ghz single loop. Adding another swiftech 120.2 made max load temps around 60-65 but this was with motherboard blocks and a 4870x2 added to the loop aswell.

So yeah you should expect to see a substantial decrease in temps in my opinion.
 
Radiators provide very little resistance to flow rate, so it is reasonable to assume that the flow rate before and after adding a second radiator remains constant.

As such, the second radiator can be expected to halve the water - air temperature difference. Ideally you should stick a thermometer in the reservoir for a while to judge how much hotter than the air your water is. Otherwise you should be able to find a graph of thermal resistance for your waterblock online, along with estimates for contact resistance arising from thermal paste (couple of degrees) and so estimate water temperature from that and the cpu's reported temperature. I'd go with the thermometer though.

In your case the radiators aren't the same, so you wont get quite the same result. Still, expecting the water-air difference to halve is reasonable. If your water is more than ten degrees hotter than the air temperature then go for it, otherwise it may not be worth the hassle.
 
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