rad with furthest distance or travel time between input vs output

craarc

craarc

craarc

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new rad time so, im wanting either a square 4x 120 (240x 240 i guess) or 120x 480 oblong normal shape rad.

but i want one with multiple intake output options to keep the two as far apart as poss what shape would be best cooling performance? not bothered about positioning cause its not going to be in a case anyway any recomends. going to be using AcoustiFan DustProof Quiet 120mm Fans as they are the best if used so far tbh.

im after a long in rad path so maximum water travel distance so was thinking 120 x 480 input bottom left output top right would provide longer travel time..

really need to know the flow patterns of various rads tho i guess but a square rad say 240 x 240 would have a smaller diagonal depending on layout so the water in rad time would be less i guess.

any recomends?
 
There are some quad pass rada! By thermochill and mayhams(so he says but not seen any in shops yet :))
Alphacool newer rads have multiple in/outlets but shares 2 common chambers
 
ok thx am going to do some research this week i bassically want as long a travel time between inlet outlet as poss (in rad time as it were)
 
If going external what about one of the big phobya rads? Would think they have a fairly large travel time given the size of them.
 
where the inputs / outputs are will make no difference, it's purely down to the internal design... you can buy both crossflow or normal flow (e.g. input/output at same end) rads - if you buy a normal flow rad that also has an output on the other end, all your doing is missing out part of the rad by using the other end

all rads split the flow in to parallel channels anyway, so flow will be slower through the rad than it is in the rest of your system, I'm not sure how you'd possibly calculate or test for that specifically... all you can do is look at reviews and see which rad gives the best temps - regardless of flow time, the best performing one would have to be the preference surely?

or failing that - the rad with the most parallel channels will be the one with the highest in rad time - it may well also be the best performing one when tested

XSPC do a crossflow in their EX360 rad, but not a quad version

phobya do a 2x2 quad, but performance wise it's worse than the G-Changer which is an inline 4

cost/performance wise the phobya 1080 is incredibly hard to beat - it's about £90 which is the same or cheaper than many quad rads but it's a 9 x 120
 
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Black Ice do the X Flow rads with inlets and outlets at diagonal corners of the rad but biggest they do seems to be a 360 (120x3)
 
okie going to look at the phobya xtreme quad 480 any ideas on that one ? or is that the bad performer ? looks like as long as its a good performer then i dont need to worry about the flow direction as long as it does the job

you reckon parallel flow will be better than a long single flow path ?

added i was thinking square originally as i had it in my head that it would provide the best performance but im starting to think if its a 4 x 120 as in 480 it wont realy matter as its going to sit behind a desk anyway . whats a reletive top performer in this design ?
 
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the phobya quad 480 (the square one) is not as good as the g-changer (which is straight)

all rads have parallel flow internally, the end can where the connector is splits the flow between about 4-8 (depending on model, size etc.) channels and they all meet back up at the other end

from the 11 model roundup on xtremesystems;
for low speed (e.g. 600-800rpm) fans the order is something like;
XSPC RX480
thermochill 120.4
Phobya G-Changer Quad
Black Ice SR-1 480

for higher speed (e.g. 1500rpm) fans it's more like;
Black Ice SR-1 480
Thermochill 120.4
XSPC RX480
Phobya G-Changer Quad

the difference between top and bottom of the list is less than 2 degrees, the square phobya is another 2 degrees worse than the g-changer depending on fan speed, but this may well still be good enough for your system when you compare with the cost as I think the square phobya is like £60 compared with £90 for some of these others
 
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wooahh just looked at those thats a bit much but what a system basically endless options in there

im tempted to go away from the square design i was tginking of and going for the traditional 4 x 120 oblong and hanging it horizontally under the desk now

seems the thermochill 120.4 comes out good overall
 
gatecrasherlok said:
Aquacomputer do their AMS Airplex modularity radiators. Looks like those would fit the bill for you, however they are darned expensive
Click to expand...

wow, found a review on them - they dissipate about 1.5 times as much heat, however they are a lot more restrictive than other rads - and a lot more expensive, so for the same price you could get 2 of the phobya 480's and run them in parallel or for even less you could just get a phobya 1080

but for people with a size restriction they would be good
 
hmmn now you have opened up an idea how about 2 x 360 in parallel so effectivly a 6 x 120 i could fit that behind the desk and y splitter both rads at both ends (getting carried away with options now)

never ending quest for toys !!
 
phobya do a 200mm x 2 rad that would effectively be the same thing (being a 200 it will have more channels than a 360 anyway so the y-splitter effect is already built in)
 
ok thx i am not totaaly decided on what yet trying to make up my mind what way to go with it.

im after max rad time (vs performance ofc) of course 6 radiators with 9 x 120 fans on each .. but within reasonable limits of size etc.

so something maybe the size of 4 or 6 normal 120mm fans or it will be to intrusive into the space im thinking off
 
I just knocked more than 10° off my quad cpu highly restrictive loop!

I was taking the opportunity whilst stripping it down to get rid of the rubbish tubing I had and replace it with XSPC, to install:
A second DDC and double DDC top and an extra 140x1 rad

Now I'm getting great turbulence in the res and a nice drop in temps. Down from 57° to 44° on the hottest cores at 100% load.
 
Avathar77 said:
There are some quad pass rada! By thermochill and mayhams(so he says but not seen any in shops yet :))
Alphacool newer rads have multiple in/outlets but shares 2 common chambers
Click to expand...

The rads are not sold by resellers but only direct from us. They have been on sale and there is only a few left .. Perhaps google would be of help.

Just to add to it. Our rads at 800 rpm to 1200 rpm kick the ass of all other low FPI rads. we don't need fancy reviews to tell us neither our testers did that for us :) ..
 
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malfunkshun said:
why the rad with longest route? most of the top performers are straight up dual pass (there and back)
Click to expand...

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 ?
 
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