First off I doubt the Evolv ATX Flow Edition has PH-F140SP fans. Phanteks changes their stock 140mm case fans fro PH-F140SP to a no model number fan that uses what is basically the PH-F140SP housing and motor (variable voltage) with a PH-F140MP impeller. In other words a 1200rpm fan that performs the same as PH-F140MP up to 1200rpm .. and as already said the PH-F140MP are good fans.
That is strange. Phanteks changed from the PH-F140SP case fans to newer MP impeller ones with no model number on fan2 years ago this spring. So if you got a new case with PH-F140SP fans it was make about 2 years ago. The impeller on MP is different than on SP and XP .. new case fans have MP impeller and no model number or specs on fan. MP impeller is bigger with
The P/Q curve of PH-F140MP is better than PH-F140SP. It has more pressure and airflow in mid to low rpm range than SP with about the same at full speed. The published specs only show fans' static pressure (how much pressure fan can make pushing air into a sealed box) and maximum free airflow (airflow with fan hanging on a string) .. usually with fan running at full speed. So while fan specs may look like SP is better airflow, the reality is that is only with no obstructions at full speed. The way I use fans is from about 500rpm at idle up to about 1000-1100rpm at full load, not at their 1500-1800rpm maximum speed were rating are taken.
First image works, last 3 do not.
As far as I know the differences are cable covering and corner pads. Maybe you daughter's case is picking up a slight vibration and resonating it through case? Could try holding case different places and see of hum goes away .. maybe hold fan if not panels. That is if you are care enough to try and find the source. It may be something else in her system or in that room. Others and myself included have chased hums only to find out they were the fridge down the hall or a light fixture. Had a friend that chased an intermittent hum in his audiophile hi-fi system for almost a year before isolating it to fridge running a couple rooms away.
As far as I know the differences are cable covering and corner pads. Maybe you daughter's case is picking up a slight vibration and resonating it through case? Could try holding case different places and see of hum goes away .. maybe hold fan if not panels. That is if you are care enough to try and find the source. It may be something else in her system or in that room. Others and myself included have chased hums only to find out they were the fridge down the hall or a light fixture. Had a friend that chased an intermittent hum in his audiophile hi-fi system for almost a year before isolating it to fridge running a couple rooms away.
Definitely possible. Phanteks is notorious for changing product without publishing there have been changes. They changed from SP case fans to no model number MP impeller case fans with nothing being said. Changed PH-TC14PE from 2-piece fins to single piece fins and .. yup, you got it, never said a word. I manged to get one of the new 1-piece finned PH-TC14PE and do comparison testing and it cools just as good, actually a little better because of new PH-F140HP_II fans being better than older cooler fans.
As far as I know the differences are cable covering and corner pads. Maybe you daughter's case is picking up a slight vibration and resonating it through case? Could try holding case different places and see of hum goes away .. maybe hold fan if not panels. That is if you are care enough to try and find the source. It may be something else in her system or in that room. Others and myself included have chased hums only to find out they were the fridge down the hall or a light fixture. Had a friend that chased an intermittent hum in his audiophile hi-fi system for almost a year before isolating it to fridge running a couple rooms away.
Are they 3-pin variable voltage or 4-pin PWM? If 4-pin PWM they are PH-F140MP. If variable voltage they are fans supplied with Phanteks cases. The case fans do not have vibration pads in corners that PH-F140MP have.
Are they 3-pin variable voltage or 4-pin PWM? If 4-pin PWM they are PH-F140MP. If variable voltage they are fans supplied with Phanteks cases. The case fans do not have vibration pads in corners that PH-F140MP have.
