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- Mar 31, 2014
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- Grunn
| System Name | Indis the Fair (cursed edition) |
|---|---|
| Processor | 11900k 5.1/4.9 undervolted. |
| Motherboard | MSI Z590 Unify-X |
| Cooling | Heatkiller VI Pro, VPP755 V.3, XSPC TX360 slim radiator, 3xA12x25, 4x Arctic P14 case fans |
| Memory | G.Skill Ripjaws V 2x16GB 4000 16-19-19 (b-die@3600 14-14-14 1.45v) |
| Video Card(s) | EVGA 2080 Super Hybrid (T30-120 fan) |
| Storage | 970EVO 1TB, 660p 1TB, WD Blue 3D 1TB, Sandisk Ultra 3D 2TB |
| Display(s) | BenQ XL2546K, Dell P2417H |
| Case | FD Define 7 |
| Audio Device(s) | DT770 Pro, Topping A50, Focusrite Scarlett 2i2, Røde VXLR+, Modmic 5 |
| Power Supply | Seasonic 860w Platinum |
| Mouse | Razer Viper Mini, Odin Infinity mousepad |
| Keyboard | GMMK Fullsize v2 (Boba U4Ts) |
| Software | Win10 x64/Win7 x64/Ubuntu |
A few years ago I dropped 60 odd quid on two pairs of 2150rpm GTs as part of a HiFi amplifier project. Long story short the amplifier got put on hold and two of the fans found their way into my personal rig.
I've actually been running them for around 2 years now, their aerodynamic performance seems very good, they move a lot of air without much fan noise at all. However, earlier this year the fan that I have mounted in the rear panel as an exhaust started getting pretty noticeable bearing noise at lower RPMs. On the other hand the fan I have mounted as a top intake did not make any similar noise despite being installed for the same amount of time.
The main factors I isolated are running time, orientation, and temperature.
I run my rig basically 24/7 unless I am out of town, so for the most part everything is running at least at idle, I probably get around 6-8 hours a day of gaming load on it a day so it gets a lot of use, the fans are basically always running. That said, given that only one of the fans exhibited the symptom, it is not particularly relevant here.
I am unsure as far as the other factors, I wouldn't have expected a ~10c difference in temperatures for a few hours of day to be something that has a big effect on the lubrication within the bearing, though my knowledge as far as the specific substances used is limited so there could be some interaction I am not aware of. Orientation is a plausible possibility from my view, the asymmetric loading on the bearing could have a big influence on performance and wear. The design of the bearing has a big influence in this aspect.
I am also considering the possibility of a manufacturing flaw or inconsistency between the two fans.
So far I have swapped the two fans but kept the same airflow configuration, however it appears that the problem is resurfacing anyway, which leads me to believe that the problem is more in the construction of the bearings and the way they handle radial loads. Anyone else know of this being an issue?
I've actually been running them for around 2 years now, their aerodynamic performance seems very good, they move a lot of air without much fan noise at all. However, earlier this year the fan that I have mounted in the rear panel as an exhaust started getting pretty noticeable bearing noise at lower RPMs. On the other hand the fan I have mounted as a top intake did not make any similar noise despite being installed for the same amount of time.
The main factors I isolated are running time, orientation, and temperature.
I run my rig basically 24/7 unless I am out of town, so for the most part everything is running at least at idle, I probably get around 6-8 hours a day of gaming load on it a day so it gets a lot of use, the fans are basically always running. That said, given that only one of the fans exhibited the symptom, it is not particularly relevant here.
I am unsure as far as the other factors, I wouldn't have expected a ~10c difference in temperatures for a few hours of day to be something that has a big effect on the lubrication within the bearing, though my knowledge as far as the specific substances used is limited so there could be some interaction I am not aware of. Orientation is a plausible possibility from my view, the asymmetric loading on the bearing could have a big influence on performance and wear. The design of the bearing has a big influence in this aspect.
I am also considering the possibility of a manufacturing flaw or inconsistency between the two fans.
So far I have swapped the two fans but kept the same airflow configuration, however it appears that the problem is resurfacing anyway, which leads me to believe that the problem is more in the construction of the bearings and the way they handle radial loads. Anyone else know of this being an issue?
