rad with furthest distance or travel time between input vs output

lol nope, it doesnt help much. The more heat you remove, the harder it is to remove more heat.
depending on what you are cooling, the most effective way to set up would be to cool the water after every significant heat source, more specifically after every significant coolant temperature increase
eg. pump>120.2>cpu>120.2>gpu
Doesn't necessarily make for the tidiest set-up though.
 
the water in a loop will tend to reach an equal temperature through the whole loop - putting rads between each item doesn't actually give you any advantage other than looking like a spaghetti mess
 
craarc said:
in rad water time max = maximum heat transfer out of rad...

compared to in block water time min = max heat trans out of cpu


so basically in block u want max flow in rad u want max time
regardless of the individual component


fast water in cooling block = max heat exchhange
slow water in rad = max heat exchange

assuming your ambient is cooler than in rad temp


which ofc it should be by the max ! as in keep room cool as poss with a/c or similar or a cooler in the sys b4 u get to the point where ambient is your lowest in loop temp


so what im after is MAX in rad time per size of rad. hence wehat is the rad that gives max in rad time as in slow flow or maximum water travel disrance per sq mm

so per squre inch/cm whatever you want to measure it in

what rad or combo will give max in rad time....

ofc within reasin cause u can say buy a rad of 50 cm x 50 cm and get the best 50 x 10 cm fans

but like i said with in reason so 4 x 120 or equivalent.


basically per size either a quad 4 x 120 or a 1 x 480 what gives best in rad time..

the doubles with a splitter seem good size v size but ...

what is the best design ?
Click to expand...

I know this is your theory, but in practice it doesn't quite work... the 2x2 square phobya rad is a quad pass rad so this should have the longest in rad time compared with a straight inline dual pass 480 - however the phobya G-Changer which is the inline one actually gives better temps

choose a rad that is the type of size you want and then try to find reviews that compare it to other similar rads, I would totally ignore this infatuation with in-rad time based on how you think it might be made as it bears very little to no relation to actually how much heat it is capable of dissipating - it may well be that the best performing rads actually are made the way you want so your theory is valid, however the only way to test this would be to find the best performing rad of a certain size and then cut it up to see exactly how it's made

the one thing you could do to improve in-rad time that might help would be to run 2 (or more) rads in parallel yourself as this will reduce the flow rate in the rads and therefore increase the in-rad time whilst keeping the high flow rate in the CPU block

bear in mind though that cost wise, getting a massive rad like the phobya 1080 will still be a lot cheaper and perform as good as if no better than 2 x 360 rads in parallel (because being a massive rad it already has many more parallel channels internally)

if you want the absolute best performance for the smallest space then go with parrallel rads, but bear in mind you will be paying through the nose for multiple rads where 1 big rad would perform just as well
 
the one thing you could do to improve in-rad time that might help would be to run 2 (or more) rads in parallel yourself as this will reduce the flow rate in the rads and therefore increase the in-rad time whilst keeping the high flow rate in the CPU block

i may go that route get two good single performers at the right size and parallel them up then .

i was hoping to get that effect fromn one unit at a sort of performance / cost balance and wondered what the best one to do that was.

will by a couple and see how it goes
 
andybird123 said:
the water in a loop will tend to reach an equal temperature through the whole loop - putting rads between each item doesn't actually give you any advantage other than looking like a spaghetti mess
Click to expand...
I'm going to have to borrow an infrared thermometer from work to show that this isnt quite true.

By that reasoning the water leaving the cpu waterblock is the same temp as it when it went in, thereby doing nothing to cool the block at all.
 
i know most people have very little variation in loop temps 1-2 degrees but with a large volume loop temp variations can be a 3-5 degrees espedially on the larger external loop systems with cooled ambient.
 
rads between every item on an external system would be even more of a nightmare and a massive hindrance to flow rate, even if you saw an improvement to the "in" water temp of each block, I'd be willing to bet that the temp of each device would be better with a cleaner loop as the flow rate in each block would be higher, unless you are running an absolutely monster pump setup to overcome it - and if you are then you're back to not seeing a benefit from rads between every item because the flow rate is good enough that it doesn't matter
 
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