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post #11 of 23
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Quote:
Originally Posted by Martinm210 View Post

Maybe but I would measure your water and air in temps before making any change. Any improvent will be in reducing that water vs air delta. If you had a lot of heat load and smaller rad I have seen 10-20c deltas but 2000 rpm is pretty fast. It is probably more likely that you have 5-10c water air delta.. So your gain will only be a portion of that.

Going to 3000rpm fans on a 10c delta would gain you a few degrees, but if you are already down to 5c maybe only one or two.

I personally would rather add more radiator than high speed fans, but space/case constrainst may not let you. Really good fans like GT could gain a reduction in noise while also increasing performance, but the higher speed flavor are expensive.

To mitigate high noise you could also look at PWM GT AP-29s, or PWM Deltas. I believe FCPU sells the four pin PWM high speed AP29 gts already modded with the PWM cable. Then using speedfan you could ramp down speeds to 1000 rpm for idle tasks and have it dial up automtically to nearly 3000 when benching or other heavy utilization needs. takes some setup work, but about the only way I would ever consider running higher speed fans.

i seriously doubt my current delta is 10 degree let along 5 degree. like i said, i am currently running some below average Aerocool turbine and Antec Tricool, all of them running in push/pull at 1450rpm. so according to you, since they're average fans, that's equivalent to a GT or eLoop fan at 1000~1100rpm.

so if i upgrade to the eLoop, or a GT AP-29 with PWM - i plan on taking advantage of PWM by throttling the rpm- and have them run at 2000rpm for eloop or 3000rpm for ap-29 during heavy load, i "should theoretically" see a performance improvement of 5~10 degree delta right? i mean if all that assumption is correct, wow that's A LOT of improvement just by switching nothing but fans. i mean i might as well just do it. since the setup will be PWM, and rpm will be throttled so during idle it'll only run roughly 1000rpm anyway.

EDIT: btw, space is a bit of concern in my setup. so i can't really add more rads, and if i were to go with a thicker rad, i can't have it to be thicker than 50mm.
Edited by howzz1854 - 1/4/14 at 6:32am
post #12 of 23
Quote:
Originally Posted by howzz1854 View Post

and one more question, do you think i'll see any performance benefit by upgrading from my current GT-S to Swiftech's MCR320-XP? my current rad has a higher FPI count.

i'll most likely be operating in the 1200~2000rpm range if i go with the eloop b12-p, or 1200~3000rpm range if i go with the AP-29 PWM.

I don't have any GTS hands on experience. I know the channels are narrow and it is a higher restriction radiator but as youbcan see in the charts above differences are pretty small and I generally wouldn't suggest a radiator swap to anyone considering how small the differences are.

The XP did really well for me and is likely much lower in restriction, but HWlabs has much higher build quality standards and paint.

I would probably stick with the GTS unless you were having flow rate issues or planning an expansion to a complex loop where pump power was limited and you needed to reduce parts restriction, etc.

GTS could perform thermally pretty similar too. Search google for "coolingmasters Gts review" it's an old french site that did some really high end testing on that rad. The compared products was a bit limited, but amazing work and equipment they used in that review. Well worth the read.
    
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post #13 of 23
I have no personal experience with the GTS, but this old review did some reallybextensive testing:
http://www.cooling-masters.com/articles-38-0.html

Well worth the read, I only wish I had their eqipment to play with.
    
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post #14 of 23
I have no hands on experience with the gts, but these guys have some awesome testing done:

http://www.cooling-masters.com/articles-38-0.html

hard to say, but generally I don't recommed rad swaps, differences can be measure with really good high precision tools but more users will have a hard time seeing any big gains.
Edited by Martinm210 - 1/4/14 at 6:49am
    
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post #15 of 23
g3.png
    
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post #16 of 23
Don't bother with 3k rpm fans. Just get a hand full of Gentle Typhoon AP-15 1850 rpm fans and that will be enough. They're able to push air through the highest FPI radiators with its high static pressure and run relatively quietly.

Personally, I can't stand any fan over 1300rpm so I run my Gentle Typhoons at 1150 or 1300 rpm on low FPI radiators. Just realize that 2k and 3k rpm fans are going to be ungodly loud.
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post #17 of 23
Sorry this board is buggy on my iphone.

Anyhow, your gain in any change will only be a fraction of whatever your air to water delta is. That's why you should measure it, don't guess.

Who knows, it could only be 3C. If you gain is 30% to switch fans then you will only see a 1C change.

An IR thermometer or a cheap $10 aquarium temp probe is all you need to measure water vs air delta.
You can not get to zero, the best i have see is a 2C delta running a quad radiator on a dual core CPU. Running my 3930k on a dual rad kit at 800rpms i have seen 20c etc.
    
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post #18 of 23
Thread Starter 
Quote:
Originally Posted by Martinm210 View Post

Sorry this board is buggy on my iphone.

Anyhow, your gain in any change will only be a fraction of whatever your air to water delta is. That's why you should measure it, don't guess.

Who knows, it could only be 3C. If you gain is 30% to switch fans then you will only see a 1C change.

An IR thermometer or a cheap $10 aquarium temp probe is all you need to measure water vs air delta.
You can not get to zero, the best i have see is a 2C delta running a quad radiator on a dual core CPU. Running my 3930k on a dual rad kit at 800rpms i have seen 20c etc.

thanks Martin, really appreciate the help.

last night i tried to order 7 eLoop B12-P from Aquatuning, but their checkout system is very wacky. it sent me to this other page to input my CC info, and then it said my payment method wasn't accepted at this time, so i hit cancel, and it took me back to the aquatuning account page, then it said order complete. and i got an order confirmation. blushsmiley.gif

not sure what's going on with these guys. so far my Amex hasnt' been charged, but it says order is complete.
post #19 of 23
Thread Starter 
Hey Martin,

i found some additional info that supports your findings.

it does looks like the GTS indeed have an edge in the higher rpm range beating some of the thicker rads. seems like these babies reanlly aren't meant to be used at lower than 1200rpm range. i think 1200~2000 can only do them justice.

this was done with a 300 watt heatload through some aquarium equipments.
Source: http://forums.pureoverclock.com/cooling/5651-triple-radiators-roundup.html


Edited by howzz1854 - 1/6/14 at 5:20pm
post #20 of 23
Thread Starter 
i contacted Aquatuning and also my bank. it seems my transaction went through this time.

lets see if i can get those 7 NB eLoop B12-P's and see how much improvement i'll get from my current subpar 120mm fans. i'll probably have the eloop setup to idle at 1200rpm and ramp up to 2000rpm full speed during load.
Edited by howzz1854 - 1/6/14 at 5:32pm
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