• Welcome to Overclockers Forums! Join us to reply in threads, receive reduced ads, and to customize your site experience!

Think I made a wrong fan choice for my rad...

Overclockers is supported by our readers. When you click a link to make a purchase, we may earn a commission. Learn More.

deadlysyn

Folding Team Content Editor, Who Dolk'd my stars S
Joined
Mar 31, 2005
Location
Stealing your megahurtz at night
So I have been running the medium speed Yates on my Black Ice GT Stealth 360 (30 FPI:screwy:) for a little too long, and temps were starting to go on the rise. I had picked up a set of Delta AFB1212VHE's, which are rated at around 130 CFM, 48.5 db, and somewhere around 3400 RPM. Needless to say, these things are LOUD. At 12 volts, I stepped into the living room, which is about 20 feet away from my rig. It literally sounded like the vacuum was running in the living room. I tried 7 volts, and they were tolerable for me, but my wife was still complaining about the noise. I then took each one down til it quit spinning, and then turned the knob on the Rheobus up until they spin up, and kept spinning. The noise dropped down drastically, but the airflow seems to have done the same. To make matters worse, the rad is a serious dust magnet. I have only had the loop set up for a couple of months, and there was already quite a bit of dust built up. I was out of canned air, so I let the Delta's do the dusting for me. It took a bit for the dust to settle, and temps were better than I have ever seen with the fans at 12 volts, around 34C idle, with a case temp of 27C (don't have a measurement of room temp, but guessing it was close). This is the first set of Delta's I have owned in quite a long time, and don't remember the ones I had before being this loud. I think I am going to look into getting some Panaflo ultra highs to replace the Delta's, as they seem to be quite a bit quieter (the one I have now is rated at 45.5 db at full tilt), moves close to the same amount of air (Delta's are 130 CFM, Panaflo FBA12G12U is about 115), use less power, have a much smaller hub in the center, and the blades seem thicker to allow more airflow at slower speeds/lower noise levels.

I just wanted to post this as a warning to anyone considering a high FPI rad, don't expect silent. Also, if you live in a dusty environment (Arizona is nothing but dust and cactus:p), you may want to add a filter on the intake side of the fans. The problem is, with that much airflow, the filters will clog up extremely fast as well. I think it is time to rethink my rad, so this one may be posted up in the classies soon.:bang head
 
how about some denkies instead of the panflo's that way if you want it quite while at 7v they will be.

YGPM btw!
 
how about some denkies instead of the panflo's that way if you want it quite while at 7v they will be.

YGPM btw!

Denki's are very nice too. I forgot about them for some reason, probably because they are next to impossible to find from most of the usual e-tailers without paying an arm, a leg (both from the dominant side of your body:p), and a first born child. Usually the places that have them at a reasonable price are usually OOS less than an hour after posting any stock they get in on the sites.

YGPM back, good sir.:thup:
 
Too bad you didn't get the Delta EFB1212SHE. They top out at 141 CFM, which sounds like a Cessna taking off, but will go as low as 4v, at which point you can hardly hear them. I used them for testing and am currently running them full-tilt on a heater core cooling a pair of old Opty's and a 7900GTX. :D

On the other hand, I like my Panaflo's, too, though I've only got M's. I'd say it's pretty much a toss-up for CFM/db once you get near 100 CFM - unless you can dig up some centrifugal (what I call squirrel cage) fans ... ;)
 
Last edited:
So I have been running the medium speed Yates on my Black Ice GT Stealth 360 (30 FPI:screwy:) for a little too long, and temps were starting to go on the rise. I had picked up a set of Delta AFB1212VHE's, which are rated at around 130 CFM, 48.5 db, and somewhere around 3400 RPM. Needless to say, these things are LOUD. At 12 volts, I stepped into the living room, which is about 20 feet away from my rig. It literally sounded like the vacuum was running in the living room. I tried 7 volts, and they were tolerable for me, but my wife was still complaining about the noise. I then took each one down til it quit spinning, and then turned the knob on the Rheobus up until they spin up, and kept spinning. The noise dropped down drastically, but the airflow seems to have done the same. To make matters worse, the rad is a serious dust magnet. I have only had the loop set up for a couple of months, and there was already quite a bit of dust built up. I was out of canned air, so I let the Delta's do the dusting for me. It took a bit for the dust to settle, and temps were better than I have ever seen with the fans at 12 volts, around 34C idle, with a case temp of 27C (don't have a measurement of room temp, but guessing it was close). This is the first set of Delta's I have owned in quite a long time, and don't remember the ones I had before being this loud. I think I am going to look into getting some Panaflo ultra highs to replace the Delta's, as they seem to be quite a bit quieter (the one I have now is rated at 45.5 db at full tilt), moves close to the same amount of air (Delta's are 130 CFM, Panaflo FBA12G12U is about 115), use less power, have a much smaller hub in the center, and the blades seem thicker to allow more airflow at slower speeds/lower noise levels.

I just wanted to post this as a warning to anyone considering a high FPI rad, don't expect silent. Also, if you live in a dusty environment (Arizona is nothing but dust and cactus:p), you may want to add a filter on the intake side of the fans. The problem is, with that much airflow, the filters will clog up extremely fast as well. I think it is time to rethink my rad, so this one may be posted up in the classies soon.:bang head


LOL, needs canned air and buys new fans, when your car needs an oil change I guess you just buy a new one, LOL
 
Too bad you didn't get the Delta EFB1212SHE. They top out at 141 CFM, which sounds like a Cessna taking off, but will go as low as 4v, at which point you can hardly hear them. I used them for testing and am currently running them full-tilt on a heater core cooling a pair of old Opty's and a 7900GTX. :D

On the other hand, I like my Panaflo's, too, though I've only got M's. I'd say it's pretty much a toss-up for CFM/db once you get near 100 CFM - unless you can dig up some centrifugal (what I call squirrel cage) fans ... ;)

I think the heater cores may have a lower fin density than the radiator. The problem with the Delta's is that mostly it seems like motor noise. At 5 volts (best guess without using a DMM), the motor noise seems to disappear, but the airflow seems to as well. My Panaflo, on the other hand, seemed like all the noise was 115 CFM going through a 120mm hole. The motor noise seemed to pick up at 7 volts, but was very tolerable. I'm working on a deal on some Denki 1011's, which seem to drop noise levels at lower voltages, but not airflow and pressure. Atleast not as much as other fans.:p

Are u talking about these?
at 5v they are silent and push enough air trough my leet mcr320 :0
btw it is a video made by me. wanted to try my cam **video recorder** :0

Those sound like the beasts. At 5 volts, they don't seem to move enough air through the rad to really keep it as cool as I would like. The problem is the GTS360 is a 30 FPI rad, where the MCR320 is something like 11 FPI. The higher fin density requires more airflow and pressure. I am still considering a couple more Panaflo ultra's, but this deal on the impossible to find Denki 1011's came up, and it's too hard to pass on. Nice vid, BTW.:thup:

LOL, needs canned air and buys new fans, when your car needs an oil change I guess you just buy a new one, LOL

If you look back through the threads in the water cooling section, you will probably notice that I have posted up several times over the past month and a half or so about having these Delta's and needing to swap them onto my rad.:screwy:
 
Last edited:
If you look back through the threads in the water cooling section, you will probably notice that I have posted up several times over the past month and a half or so about having these Delta's and needing to swap them onto my rad.:screwy:


LOL,You have posted about this before, LOL, so a new rad and fans are going to cure your dust problem??
 
So I have been running the medium speed Yates on my Black Ice GT Stealth 360 (30 FPI:screwy:) for a little too long, and temps were starting to go on the rise. I had picked up a set of Delta AFB1212VHE's, which are rated at around 130 CFM, 48.5 db, and somewhere around 3400 RPM. Needless to say, these things are LOUD. At 12 volts, I stepped into the living room, which is about 20 feet away from my rig. It literally sounded like the vacuum was running in the living room. I tried 7 volts, and they were tolerable for me, but my wife was still complaining about the noise. I then took each one down til it quit spinning, and then turned the knob on the Rheobus up until they spin up, and kept spinning. The noise dropped down drastically, but the airflow seems to have done the same. To make matters worse, the rad is a serious dust magnet. I have only had the loop set up for a couple of months, and there was already quite a bit of dust built up. I was out of canned air, so I let the Delta's do the dusting for me. It took a bit for the dust to settle, and temps were better than I have ever seen with the fans at 12 volts, around 34C idle, with a case temp of 27C (don't have a measurement of room temp, but guessing it was close). This is the first set of Delta's I have owned in quite a long time, and don't remember the ones I had before being this loud. I think I am going to look into getting some Panaflo ultra highs to replace the Delta's, as they seem to be quite a bit quieter (the one I have now is rated at 45.5 db at full tilt), moves close to the same amount of air (Delta's are 130 CFM, Panaflo FBA12G12U is about 115), use less power, have a much smaller hub in the center, and the blades seem thicker to allow more airflow at slower speeds/lower noise levels.

I just wanted to post this as a warning to anyone considering a high FPI rad, don't expect silent. Also, if you live in a dusty environment (Arizona is nothing but dust and cactus:p), you may want to add a filter on the intake side of the fans. The problem is, with that much airflow, the filters will clog up extremely fast as well. I think it is time to rethink my rad, so this one may be posted up in the classies soon.:bang head

LOL,You have posted about this before, LOL, so a new rad and fans are going to cure your dust problem??

I think you may want to read my OP again, paying close attention to the parts that I just bolded out in the quote.:p
 
Back