120mm vs 140mm rads

[grahamie]

im looking at new rads and i was wondering if there was much benefit in using 140mm vs 120mm and if it would be worth while

 

[ortoklaz]

yes ,more RAD face =more heat dissipation ,the only down site to it are 140MM fans
there is a lot more 120MM fans to choose from with better CFM,any links to the RAD's in question ?

 

[grahamie]

i have recently been schooled on rad surface and heat dissipation in a different thread but what i was wondering aside from the fan options is how much better will a 140mm work than a 120mm and is it worth the extra money
yes i have a few links for rads that have my interest
http://www.performance-pcs.com/catalog/index.php?main_page=product_info&cPath=59_457_458&products_id=27882
but its expensive compared to
http://ncix.com/products/?sku=57029&vpn=TA120%2E3&manufacture=Thermochill

 

[rubix_1011]

Which thread did this schooling take place?

I'd agree...more rad space is better if you have a place to mount it. FrozenCPU is one of the places that actually carries a decent selection of 140mm fans, but they are a little higher in price than most places. Larger selection...little higher in price.

 

[ortoklaz]

i have recently been schooled on rad surface and heat dissipation in a different thread but what i was wondering aside from the fan options is how much better will a 140mm work than a 120mm and is it worth the extra money
yes i have a few links for rads that have my interest
http://www.performance-pcs.com/catalog/index.php?main_page=product_info&cPath=59_457_458&products_id=27882
but its expensive compared to
http://ncix.com/products/?sku=57029&vpn=TA120%2E3&manufacture=Thermochill

The sheer amount of space this RAD's need+variety of fans available is the main reason this are not that popular
this 3x140 rad (mention before) will own most of 3x120's (with same FPI) on the market,here are some tests, comparison for you;

look at same fan RPM/ Deltas of 10º/ for heat load (watts)


http://skinneelabs.com/thermochill-pa140-3/4/
http://skinneelabs.com/thermochill-pa120-3-15mm/4/

http://www.xtremesystems.org/Forums/showthread.php?t=210081&page=2
http://www.overclock.net/water-cooling/881725-140mm-fan-testing-hwlabs-sr1-radiator.html
http://forums.overclockers.com.au/showthread.php?t=832269
there is more 140MM fans then there wore say 2 years ago which will make this Rad's very popular and better choice over 120
140 is clear winer but it will come with higher price

 

[grahamie]

rubix_1011 you and i recently discussed weather i should just upgrade my present rad or add a second rad to the loop
http://www.tomshardware.com/forum/forum2.php?config=tomshardwareus.inc&cat=29&post=265810&page=1&p=1&sondage=0&owntopic=1&trash=0&trash_post=0&print=0&numreponse=0&quote_only=0&new=0&nojs=0

Thanks again for the schooling lol
with this thread i was hoping to find an answer as to weather a 3x140mm would be a waste of money or a worth while investment compared to a 3x120 mounting space and fans are not an issue for my application
so as long as im reading these graphs right this 3x120 will dissipate 554 watts of heat and the resulting water temp is aprox 11.5c and the 140mm will dissipate 552 watts with a water temp of 10c
so i guess the 140mm is better by a couple deg but it doesn’t feel like much bang for your buck
although the feser 140mm rad has a few very nice options that may just make up for the extra cash

 

[rubix_1011]

Ahhh...yes. Sorry...lots going on.

To be honest, I would choose a 140 over a 120 as long as you had the fans and space to mount. You are going to run more surface area, and anytime you do that, you also increase your potential cooling. Ever heard the saying 'There's no replacement for displacement'? This applies in racing engines a lot, but also in this case for watercooling radiators as well. The ability to have more surface area in the 'relative' same size means better overall performance. BIX rads operate on this principle by having high FPI; this increases surface area, but this also requires better fans.

This is the interesting question I'll pose... Anyone have ideas on how this 3x140 rad stacks up to say...an XSPC RX360? Considering the additional surface area on the RX rad, it might be a close call.

 

[ortoklaz]

no..120.3 @1407RPM around 490watts and 140.3 @1372RPM 550..if you get 1600RPM on 140MM you delta will improve big time

 

[ortoklaz]

Ahhh...yes. Sorry...lots going on.

To be honest, I would choose a 140 over a 120 as long as you had the fans and space to mount. You are going to run more surface area, and anytime you do that, you also increase your potential cooling. Ever heard the saying 'There's no replacement for displacement'? This applies in racing engines a lot, but also in this case for watercooling radiators as well. The ability to have more surface area in the 'relative' same size means better overall performance. BIX rads operate on this principle by having high FPI; this increases surface area, but this also requires better fans.

This is the interesting question I'll pose... Anyone have ideas on how this 3x140 rad stacks up to say...an XSPC RX360? Considering the additional surface area on the RX rad, it might be a close call.

you can head on to Skinnee...@1415RPM~475.81

http://skinneelabs.com/triple-radiator-comparison-v2/4/

 

[rubix_1011]

Apples to apples...if you are running similar speed fans, different sized rads, bigger always wins. I'm just curious to the overall surface area of a 3x140 vs the RX360. Not actual LxWxD in volume...but actual tubing/fin surface area.

Edit: right, I agree with that link...but I'm curious to tests we can see where the 140.3's are tested for comparison.

 

[ortoklaz]

@ OP TC PA 140.3 is your best choice around 1400RPM,good luck

 

[grahamie]

no..120.3 @1407RPM around 490watts and 140.3 @1372RPM 550..if you get 1600RPM on 140MM you delta will improve big time

my plan is to use these fans in my application http://ncix.com/products/?sku=26744&vpn=DFS123812H%2D3000&manufacture=Scythe
yes there 120mm not 140mm and yes there about as loud as you can get. this rad is a second rad in my loop ( i have a 120.3 now) and will only run when i need it to as my temps are ok... but i want them lower when im running the crap out of my system
thank you for the clarification on the graphs i understand them better now

 

[rubix_1011]

( i have a 120.3 now) and will only run when i need it to as my temps are ok

How are you going to accomplish this? Or simply add it into the loop when you need the cooling ability?

 

[ortoklaz]

I own this ..think this are the best fans for 140MM RAD;
http://www.newegg.com/Product/Product.aspx?Item=N82E16835185165&nm_mc=OTC-Froogle&cm_mmc=OTC-Froogle-_-Case+Fans-_-Scythe+USA-_-35185165

 

[rubix_1011]

100CFM, huh?

Do you use it to blow leaves and grass off your driveway? Dry your hair? Power your personal hovercraft?

 

[ortoklaz]

man..i tell you they sure can move some air

 

[grahamie]

( i have a 120.3 now) and will only run when i need it to as my temps are ok

How are you going to accomplish this? Or simply add it into the loop when you need the cooling ability?

on my second rad the 140mm ( if thats what i get ) will have the fans off untill i turn them on my system idles at 34c as it is with 1 3x120. that setup will run non stop as it does now, when i sit down with a game ill turn on the fans for the 140mm rad setup
does this seem sensiable ?

 

[rubix_1011]

Ah...I see. Makes sense. Even a fan controller to turn them down would work as well.

 

[grahamie]

I own this ..think this are the best fans for 140MM RAD;
http://www.newegg.com/Product/Product.aspx?Item=N82E16835185165&nm_mc=OTC-Froogle&cm_mmc=OTC-Froogle-_-Case+Fans-_-Scythe+USA-_-35185165

they seem like very similar fans although there lower cfm and twice the price but slightly lower bda and 4x the life
do 135 mm mount and 140mm rads ?
and i cant find anything boosting there static pressure ?

 

[grahamie]

Ah...I see. Makes sense. Even a fan controller to turn them down would work as well.

A fan controller is already in the shopping cart with a full on off switch as well just to get full control over them

 

[ortoklaz]

A fan controller is already in the shopping cart with a full on off switch as well just to get full control over them

I don't buy fans above 1600RPM (you only need 1800RPM+ for 20~ 30FPI),make sure your get high voltage controller

 

[rubix_1011]

make sure your get high voltage controller

Yep, good call on this.

 

[grahamie]

im looking at a 5v-12v controller is that high voltage ? if not any recommendations it has to for a 3.5 bay